diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a5f816ac9a85..be5ab5f8e03a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -84,6 +84,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 - [Search Pipelines] Accept pipelines defined in search source ([#7253](https://github.com/opensearch-project/OpenSearch/pull/7253))
 - [Search Pipelines] Add `default_search_pipeline` index setting ([#7470](https://github.com/opensearch-project/OpenSearch/pull/7470))
 - [Search Pipelines] Add RenameFieldResponseProcessor for Search Pipelines ([#7377](https://github.com/opensearch-project/OpenSearch/pull/7377))
+- [Search Pipelines] Split search pipeline processor factories by type ([#7597](https://github.com/opensearch-project/OpenSearch/pull/7597))
 - Add descending order search optimization through reverse segment read. ([#7244](https://github.com/opensearch-project/OpenSearch/pull/7244))
 - Add 'unsigned_long' numeric field type ([#6237](https://github.com/opensearch-project/OpenSearch/pull/6237))
 - Add back primary shard preference for queries ([#7375](https://github.com/opensearch-project/OpenSearch/pull/7375))
diff --git a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/FilterQueryRequestProcessor.java b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/FilterQueryRequestProcessor.java
index 81c00012daec6..0ca090780bb60 100644
--- a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/FilterQueryRequestProcessor.java
+++ b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/FilterQueryRequestProcessor.java
@@ -75,7 +75,7 @@ public SearchRequest processRequest(SearchRequest request) throws Exception {
         return request;
     }
 
-    static class Factory implements Processor.Factory {
+    static class Factory implements Processor.Factory<SearchRequestProcessor> {
         private final NamedXContentRegistry namedXContentRegistry;
         public static final ParseField QUERY_FIELD = new ParseField("query");
 
@@ -85,7 +85,7 @@ static class Factory implements Processor.Factory {
 
         @Override
         public FilterQueryRequestProcessor create(
-            Map<String, Processor.Factory> processorFactories,
+            Map<String, Processor.Factory<SearchRequestProcessor>> processorFactories,
             String tag,
             String description,
             Map<String, Object> config
diff --git a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/RenameFieldResponseProcessor.java b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/RenameFieldResponseProcessor.java
index 3a2f0e9fb2492..4c40dda5928f0 100644
--- a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/RenameFieldResponseProcessor.java
+++ b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/RenameFieldResponseProcessor.java
@@ -128,7 +128,7 @@ public SearchResponse processResponse(SearchRequest request, SearchResponse resp
     /**
      * This is a factor that creates the RenameResponseProcessor
      */
-    public static final class Factory implements Processor.Factory {
+    public static final class Factory implements Processor.Factory<SearchResponseProcessor> {
 
         /**
          * Constructor for factory
@@ -137,7 +137,7 @@ public static final class Factory implements Processor.Factory {
 
         @Override
         public RenameFieldResponseProcessor create(
-            Map<String, Processor.Factory> processorFactories,
+            Map<String, Processor.Factory<SearchResponseProcessor>> processorFactories,
             String tag,
             String description,
             Map<String, Object> config
diff --git a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/SearchPipelineCommonModulePlugin.java b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/SearchPipelineCommonModulePlugin.java
index a0e5182f71443..aa56714085b48 100644
--- a/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/SearchPipelineCommonModulePlugin.java
+++ b/modules/search-pipeline-common/src/main/java/org/opensearch/search/pipeline/common/SearchPipelineCommonModulePlugin.java
@@ -11,6 +11,8 @@
 import org.opensearch.plugins.Plugin;
 import org.opensearch.plugins.SearchPipelinePlugin;
 import org.opensearch.search.pipeline.Processor;
+import org.opensearch.search.pipeline.SearchRequestProcessor;
+import org.opensearch.search.pipeline.SearchResponseProcessor;
 
 import java.util.Map;
 
@@ -25,12 +27,12 @@ public class SearchPipelineCommonModulePlugin extends Plugin implements SearchPi
     public SearchPipelineCommonModulePlugin() {}
 
     @Override
-    public Map<String, Processor.Factory> getProcessors(Processor.Parameters parameters) {
-        return Map.of(
-            FilterQueryRequestProcessor.TYPE,
-            new FilterQueryRequestProcessor.Factory(parameters.namedXContentRegistry),
-            RenameFieldResponseProcessor.TYPE,
-            new RenameFieldResponseProcessor.Factory()
-        );
+    public Map<String, Processor.Factory<SearchRequestProcessor>> getRequestProcessors(Processor.Parameters parameters) {
+        return Map.of(FilterQueryRequestProcessor.TYPE, new FilterQueryRequestProcessor.Factory(parameters.namedXContentRegistry));
+    }
+
+    @Override
+    public Map<String, Processor.Factory<SearchResponseProcessor>> getResponseProcessors(Processor.Parameters parameters) {
+        return Map.of(RenameFieldResponseProcessor.TYPE, new RenameFieldResponseProcessor.Factory());
     }
 }
diff --git a/modules/search-pipeline-common/src/yamlRestTest/resources/rest-api-spec/test/search_pipeline/10_basic.yml b/modules/search-pipeline-common/src/yamlRestTest/resources/rest-api-spec/test/search_pipeline/10_basic.yml
index 0d931f8587664..644181d601ea4 100644
--- a/modules/search-pipeline-common/src/yamlRestTest/resources/rest-api-spec/test/search_pipeline/10_basic.yml
+++ b/modules/search-pipeline-common/src/yamlRestTest/resources/rest-api-spec/test/search_pipeline/10_basic.yml
@@ -12,5 +12,5 @@
       nodes.info: {}
 
   - contains:  { nodes.$cluster_manager.modules: { name: search-pipeline-common } }
-  - contains:  { nodes.$cluster_manager.search_pipelines.processors: { type: filter_query } }
-  - contains:  { nodes.$cluster_manager.search_pipelines.processors: { type: rename_field } }
+  - contains:  { nodes.$cluster_manager.search_pipelines.request_processors: { type: filter_query } }
+  - contains:  { nodes.$cluster_manager.search_pipelines.response_processors: { type: rename_field } }
diff --git a/server/src/main/java/org/opensearch/plugins/SearchPipelinePlugin.java b/server/src/main/java/org/opensearch/plugins/SearchPipelinePlugin.java
index 8e6fbef6c8b1d..b8ceddecd3d20 100644
--- a/server/src/main/java/org/opensearch/plugins/SearchPipelinePlugin.java
+++ b/server/src/main/java/org/opensearch/plugins/SearchPipelinePlugin.java
@@ -9,6 +9,8 @@
 package org.opensearch.plugins;
 
 import org.opensearch.search.pipeline.Processor;
+import org.opensearch.search.pipeline.SearchRequestProcessor;
+import org.opensearch.search.pipeline.SearchResponseProcessor;
 
 import java.util.Collections;
 import java.util.Map;
@@ -20,13 +22,24 @@
  */
 public interface SearchPipelinePlugin {
     /**
-     * Returns additional search pipeline processor types added by this plugin.
+     * Returns additional search pipeline request processor types added by this plugin.
      *
      * The key of the returned {@link Map} is the unique name for the processor which is specified
      * in pipeline configurations, and the value is a {@link org.opensearch.search.pipeline.Processor.Factory}
      * to create the processor from a given pipeline configuration.
      */
-    default Map<String, Processor.Factory> getProcessors(Processor.Parameters parameters) {
+    default Map<String, Processor.Factory<SearchRequestProcessor>> getRequestProcessors(Processor.Parameters parameters) {
+        return Collections.emptyMap();
+    }
+
+    /**
+     * Returns additional search pipeline response processor types added by this plugin.
+     *
+     * The key of the returned {@link Map} is the unique name for the processor which is specified
+     * in pipeline configurations, and the value is a {@link org.opensearch.search.pipeline.Processor.Factory}
+     * to create the processor from a given pipeline configuration.
+     */
+    default Map<String, Processor.Factory<SearchResponseProcessor>> getResponseProcessors(Processor.Parameters parameters) {
         return Collections.emptyMap();
     }
 }
diff --git a/server/src/main/java/org/opensearch/search/pipeline/Pipeline.java b/server/src/main/java/org/opensearch/search/pipeline/Pipeline.java
index f5dce8ec728b2..c9a5f865d507e 100644
--- a/server/src/main/java/org/opensearch/search/pipeline/Pipeline.java
+++ b/server/src/main/java/org/opensearch/search/pipeline/Pipeline.java
@@ -46,7 +46,7 @@ class Pipeline {
 
     private final NamedWriteableRegistry namedWriteableRegistry;
 
-    Pipeline(
+    private Pipeline(
         String id,
         @Nullable String description,
         @Nullable Integer version,
@@ -62,31 +62,24 @@ class Pipeline {
         this.namedWriteableRegistry = namedWriteableRegistry;
     }
 
-    public static Pipeline create(
+    static Pipeline create(
         String id,
         Map<String, Object> config,
-        Map<String, Processor.Factory> processorFactories,
+        Map<String, Processor.Factory<SearchRequestProcessor>> requestProcessorFactories,
+        Map<String, Processor.Factory<SearchResponseProcessor>> responseProcessorFactories,
         NamedWriteableRegistry namedWriteableRegistry
     ) throws Exception {
         String description = ConfigurationUtils.readOptionalStringProperty(null, null, config, DESCRIPTION_KEY);
         Integer version = ConfigurationUtils.readIntProperty(null, null, config, VERSION_KEY, null);
         List<Map<String, Object>> requestProcessorConfigs = ConfigurationUtils.readOptionalList(null, null, config, REQUEST_PROCESSORS_KEY);
-        List<SearchRequestProcessor> requestProcessors = readProcessors(
-            SearchRequestProcessor.class,
-            processorFactories,
-            requestProcessorConfigs
-        );
+        List<SearchRequestProcessor> requestProcessors = readProcessors(requestProcessorFactories, requestProcessorConfigs);
         List<Map<String, Object>> responseProcessorConfigs = ConfigurationUtils.readOptionalList(
             null,
             null,
             config,
             RESPONSE_PROCESSORS_KEY
         );
-        List<SearchResponseProcessor> responseProcessors = readProcessors(
-            SearchResponseProcessor.class,
-            processorFactories,
-            responseProcessorConfigs
-        );
+        List<SearchResponseProcessor> responseProcessors = readProcessors(responseProcessorFactories, responseProcessorConfigs);
         if (config.isEmpty() == false) {
             throw new OpenSearchParseException(
                 "pipeline ["
@@ -98,10 +91,8 @@ public static Pipeline create(
         return new Pipeline(id, description, version, requestProcessors, responseProcessors, namedWriteableRegistry);
     }
 
-    @SuppressWarnings("unchecked") // Cast is checked using isInstance
     private static <T extends Processor> List<T> readProcessors(
-        Class<T> processorType,
-        Map<String, Processor.Factory> processorFactories,
+        Map<String, Processor.Factory<T>> processorFactories,
         List<Map<String, Object>> requestProcessorConfigs
     ) throws Exception {
         List<T> processors = new ArrayList<>();
@@ -117,22 +108,10 @@ private static <T extends Processor> List<T> readProcessors(
                 Map<String, Object> config = (Map<String, Object>) entry.getValue();
                 String tag = ConfigurationUtils.readOptionalStringProperty(null, null, config, TAG_KEY);
                 String description = ConfigurationUtils.readOptionalStringProperty(null, tag, config, DESCRIPTION_KEY);
-                Processor processor = processorFactories.get(type).create(processorFactories, tag, description, config);
-                if (processorType.isInstance(processor)) {
-                    processors.add((T) processor);
-                } else {
-                    throw new IllegalArgumentException("Processor type " + type + " is not a " + processorType.getSimpleName());
-                }
+                processors.add(processorFactories.get(type).create(processorFactories, tag, description, config));
             }
         }
-        return processors;
-    }
-
-    List<Processor> flattenAllProcessors() {
-        List<Processor> allProcessors = new ArrayList<>(searchRequestProcessors.size() + searchResponseProcessors.size());
-        allProcessors.addAll(searchRequestProcessors);
-        allProcessors.addAll(searchResponseProcessors);
-        return allProcessors;
+        return Collections.unmodifiableList(processors);
     }
 
     String getId() {
diff --git a/server/src/main/java/org/opensearch/search/pipeline/Processor.java b/server/src/main/java/org/opensearch/search/pipeline/Processor.java
index 44f268242b83c..ee28db1cc334d 100644
--- a/server/src/main/java/org/opensearch/search/pipeline/Processor.java
+++ b/server/src/main/java/org/opensearch/search/pipeline/Processor.java
@@ -52,7 +52,7 @@ public interface Processor {
     /**
      * A factory that knows how to construct a processor based on a map of maps.
      */
-    interface Factory {
+    interface Factory<T extends Processor> {
 
         /**
          * Creates a processor based on the specified map of maps config.
@@ -65,8 +65,7 @@ interface Factory {
          *                           <b>Note:</b> Implementations are responsible for removing the used configuration
          *                           keys, so that after creation the config map should be empty.
          */
-        Processor create(Map<String, Factory> processorFactories, String tag, String description, Map<String, Object> config)
-            throws Exception;
+        T create(Map<String, Factory<T>> processorFactories, String tag, String description, Map<String, Object> config) throws Exception;
     }
 
     /**
diff --git a/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineInfo.java b/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineInfo.java
index 95d1e3720cbb3..b91f18c44cc7b 100644
--- a/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineInfo.java
+++ b/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineInfo.java
@@ -8,15 +8,19 @@
 
 package org.opensearch.search.pipeline;
 
+import org.opensearch.Version;
 import org.opensearch.common.io.stream.StreamInput;
 import org.opensearch.common.io.stream.StreamOutput;
 import org.opensearch.core.xcontent.XContentBuilder;
 import org.opensearch.node.ReportingService;
 
 import java.io.IOException;
+import java.util.Collections;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import java.util.Set;
+import java.util.TreeMap;
 import java.util.TreeSet;
 
 /**
@@ -26,45 +30,84 @@
  */
 public class SearchPipelineInfo implements ReportingService.Info {
 
-    private final Set<ProcessorInfo> processors;
+    private final Map<String, Set<ProcessorInfo>> processors = new TreeMap<>();
 
-    public SearchPipelineInfo(List<ProcessorInfo> processors) {
-        this.processors = new TreeSet<>(processors);  // we use a treeset here to have a test-able / predictable order
+    public SearchPipelineInfo(Map<String, List<ProcessorInfo>> processors) {
+        for (Map.Entry<String, List<ProcessorInfo>> processorsEntry : processors.entrySet()) {
+            // we use a treeset here to have a test-able / predictable order
+            this.processors.put(processorsEntry.getKey(), new TreeSet<>(processorsEntry.getValue()));
+        }
     }
 
     /**
      * Read from a stream.
      */
     public SearchPipelineInfo(StreamInput in) throws IOException {
-        processors = new TreeSet<>();
-        final int size = in.readVInt();
-        for (int i = 0; i < size; i++) {
-            processors.add(new ProcessorInfo(in));
+        // TODO: When we backport this to 2.8, we must change this condition to out.getVersion().before(V_2_8_0)
+        if (in.getVersion().onOrBefore(Version.V_2_8_0)) {
+            // Prior to version 2.8, we had a flat list of processors. For best compatibility, assume they're valid
+            // request and response processor, since we couldn't tell the difference back then.
+            final int size = in.readVInt();
+            Set<ProcessorInfo> processorInfos = new TreeSet<>();
+            for (int i = 0; i < size; i++) {
+                processorInfos.add(new ProcessorInfo(in));
+            }
+            processors.put(Pipeline.REQUEST_PROCESSORS_KEY, processorInfos);
+            processors.put(Pipeline.RESPONSE_PROCESSORS_KEY, processorInfos);
+        } else {
+            final int numTypes = in.readVInt();
+            for (int i = 0; i < numTypes; i++) {
+                String type = in.readString();
+                int numProcessors = in.readVInt();
+                Set<ProcessorInfo> processorInfos = new TreeSet<>();
+                for (int j = 0; j < numProcessors; j++) {
+                    processorInfos.add(new ProcessorInfo(in));
+                }
+                processors.put(type, processorInfos);
+            }
         }
     }
 
     @Override
     public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
         builder.startObject("search_pipelines");
-        builder.startArray("processors");
-        for (ProcessorInfo info : processors) {
-            info.toXContent(builder, params);
+        for (Map.Entry<String, Set<ProcessorInfo>> processorEntry : processors.entrySet()) {
+            builder.startArray(processorEntry.getKey());
+            for (ProcessorInfo info : processorEntry.getValue()) {
+                info.toXContent(builder, params);
+            }
+            builder.endArray();
         }
-        builder.endArray();
         builder.endObject();
         return builder;
     }
 
     @Override
     public void writeTo(StreamOutput out) throws IOException {
-        out.write(processors.size());
-        for (ProcessorInfo info : processors) {
-            info.writeTo(out);
+        // TODO: When we backport this to 2.8, we must change this condition to out.getVersion().before(V_2_8_0)
+        if (out.getVersion().onOrBefore(Version.V_2_8_0)) {
+            // Prior to version 2.8, we grouped all processors into a single list.
+            Set<ProcessorInfo> processorInfos = new TreeSet<>();
+            processorInfos.addAll(processors.getOrDefault(Pipeline.REQUEST_PROCESSORS_KEY, Collections.emptySet()));
+            processorInfos.addAll(processors.getOrDefault(Pipeline.RESPONSE_PROCESSORS_KEY, Collections.emptySet()));
+            out.writeVInt(processorInfos.size());
+            for (ProcessorInfo processorInfo : processorInfos) {
+                processorInfo.writeTo(out);
+            }
+        } else {
+            out.write(processors.size());
+            for (Map.Entry<String, Set<ProcessorInfo>> processorsEntry : processors.entrySet()) {
+                out.writeString(processorsEntry.getKey());
+                out.writeVInt(processorsEntry.getValue().size());
+                for (ProcessorInfo processorInfo : processorsEntry.getValue()) {
+                    processorInfo.writeTo(out);
+                }
+            }
         }
     }
 
-    public boolean containsProcessor(String type) {
-        return processors.contains(new ProcessorInfo(type));
+    public boolean containsProcessor(String processorType, String type) {
+        return processors.containsKey(processorType) && processors.get(processorType).contains(new ProcessorInfo(type));
     }
 
     @Override
diff --git a/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineService.java b/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineService.java
index f96a6eb4a6b76..a486e636cbb7d 100644
--- a/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineService.java
+++ b/server/src/main/java/org/opensearch/search/pipeline/SearchPipelineService.java
@@ -55,6 +55,8 @@
 import java.util.Set;
 import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.stream.Collectors;
 
 /**
  * The main entry point for search pipelines. Handles CRUD operations and exposes the API to execute search pipelines
@@ -68,7 +70,8 @@ public class SearchPipelineService implements ClusterStateApplier, ReportingServ
     private static final Logger logger = LogManager.getLogger(SearchPipelineService.class);
     private final ClusterService clusterService;
     private final ScriptService scriptService;
-    private final Map<String, Processor.Factory> processorFactories;
+    private final Map<String, Processor.Factory<SearchRequestProcessor>> requestProcessorFactories;
+    private final Map<String, Processor.Factory<SearchResponseProcessor>> responseProcessorFactories;
     private volatile Map<String, PipelineHolder> pipelines = Collections.emptyMap();
     private final ThreadPool threadPool;
     private final List<Consumer<ClusterState>> searchPipelineClusterStateListeners = new CopyOnWriteArrayList<>();
@@ -95,34 +98,33 @@ public SearchPipelineService(
         this.scriptService = scriptService;
         this.threadPool = threadPool;
         this.namedWriteableRegistry = namedWriteableRegistry;
-        this.processorFactories = processorFactories(
-            searchPipelinePlugins,
-            new Processor.Parameters(
-                env,
-                scriptService,
-                analysisRegistry,
-                threadPool.getThreadContext(),
-                threadPool::relativeTimeInMillis,
-                (delay, command) -> threadPool.schedule(command, TimeValue.timeValueMillis(delay), ThreadPool.Names.GENERIC),
-                this,
-                client,
-                threadPool.generic()::execute,
-                namedXContentRegistry
-            )
+        Processor.Parameters parameters = new Processor.Parameters(
+            env,
+            scriptService,
+            analysisRegistry,
+            threadPool.getThreadContext(),
+            threadPool::relativeTimeInMillis,
+            (delay, command) -> threadPool.schedule(command, TimeValue.timeValueMillis(delay), ThreadPool.Names.GENERIC),
+            this,
+            client,
+            threadPool.generic()::execute,
+            namedXContentRegistry
         );
+        this.requestProcessorFactories = processorFactories(searchPipelinePlugins, p -> p.getRequestProcessors(parameters));
+        this.responseProcessorFactories = processorFactories(searchPipelinePlugins, p -> p.getResponseProcessors(parameters));
         putPipelineTaskKey = clusterService.registerClusterManagerTask(ClusterManagerTaskKeys.PUT_SEARCH_PIPELINE_KEY, true);
         deletePipelineTaskKey = clusterService.registerClusterManagerTask(ClusterManagerTaskKeys.DELETE_SEARCH_PIPELINE_KEY, true);
         this.isEnabled = isEnabled;
     }
 
-    private static Map<String, Processor.Factory> processorFactories(
+    private static <T extends Processor> Map<String, Processor.Factory<T>> processorFactories(
         List<SearchPipelinePlugin> searchPipelinePlugins,
-        Processor.Parameters parameters
+        Function<SearchPipelinePlugin, Map<String, Processor.Factory<T>>> processorLoader
     ) {
-        Map<String, Processor.Factory> processorFactories = new HashMap<>();
+        Map<String, Processor.Factory<T>> processorFactories = new HashMap<>();
         for (SearchPipelinePlugin searchPipelinePlugin : searchPipelinePlugins) {
-            Map<String, Processor.Factory> newProcessors = searchPipelinePlugin.getProcessors(parameters);
-            for (Map.Entry<String, Processor.Factory> entry : newProcessors.entrySet()) {
+            Map<String, Processor.Factory<T>> newProcessors = processorLoader.apply(searchPipelinePlugin);
+            for (Map.Entry<String, Processor.Factory<T>> entry : newProcessors.entrySet()) {
                 if (processorFactories.put(entry.getKey(), entry.getValue()) != null) {
                     throw new IllegalArgumentException("Search processor [" + entry.getKey() + "] is already registered");
                 }
@@ -173,7 +175,8 @@ void innerUpdatePipelines(SearchPipelineMetadata newSearchPipelineMetadata) {
                 Pipeline newPipeline = Pipeline.create(
                     newConfiguration.getId(),
                     newConfiguration.getConfigAsMap(),
-                    processorFactories,
+                    requestProcessorFactories,
+                    responseProcessorFactories,
                     namedWriteableRegistry
                 );
                 newPipelines.put(newConfiguration.getId(), new PipelineHolder(newConfiguration, newPipeline));
@@ -268,12 +271,27 @@ void validatePipeline(Map<DiscoveryNode, SearchPipelineInfo> searchPipelineInfos
             throw new IllegalStateException("Search pipeline info is empty");
         }
         Map<String, Object> pipelineConfig = XContentHelper.convertToMap(request.getSource(), false, request.getXContentType()).v2();
-        Pipeline pipeline = Pipeline.create(request.getId(), pipelineConfig, processorFactories, namedWriteableRegistry);
+        Pipeline pipeline = Pipeline.create(
+            request.getId(),
+            pipelineConfig,
+            requestProcessorFactories,
+            responseProcessorFactories,
+            namedWriteableRegistry
+        );
         List<Exception> exceptions = new ArrayList<>();
-        for (Processor processor : pipeline.flattenAllProcessors()) {
+        for (SearchRequestProcessor processor : pipeline.getSearchRequestProcessors()) {
+            for (Map.Entry<DiscoveryNode, SearchPipelineInfo> entry : searchPipelineInfos.entrySet()) {
+                String type = processor.getType();
+                if (entry.getValue().containsProcessor(Pipeline.REQUEST_PROCESSORS_KEY, type) == false) {
+                    String message = "Processor type [" + processor.getType() + "] is not installed on node [" + entry.getKey() + "]";
+                    exceptions.add(ConfigurationUtils.newConfigurationException(processor.getType(), processor.getTag(), null, message));
+                }
+            }
+        }
+        for (SearchResponseProcessor processor : pipeline.getSearchResponseProcessors()) {
             for (Map.Entry<DiscoveryNode, SearchPipelineInfo> entry : searchPipelineInfos.entrySet()) {
                 String type = processor.getType();
-                if (entry.getValue().containsProcessor(type) == false) {
+                if (entry.getValue().containsProcessor(Pipeline.RESPONSE_PROCESSORS_KEY, type) == false) {
                     String message = "Processor type [" + processor.getType() + "] is not installed on node [" + entry.getKey() + "]";
                     exceptions.add(ConfigurationUtils.newConfigurationException(processor.getType(), processor.getTag(), null, message));
                 }
@@ -352,7 +370,8 @@ public PipelinedRequest resolvePipeline(SearchRequest searchRequest) throws Exce
                 pipeline = Pipeline.create(
                     AD_HOC_PIPELINE_ID,
                     searchRequest.source().searchPipelineSource(),
-                    processorFactories,
+                    requestProcessorFactories,
+                    responseProcessorFactories,
                     namedWriteableRegistry
                 );
             } catch (Exception e) {
@@ -385,17 +404,27 @@ public PipelinedRequest resolvePipeline(SearchRequest searchRequest) throws Exce
         return new PipelinedRequest(pipeline, transformedRequest);
     }
 
-    Map<String, Processor.Factory> getProcessorFactories() {
-        return processorFactories;
+    Map<String, Processor.Factory<SearchRequestProcessor>> getRequestProcessorFactories() {
+        return requestProcessorFactories;
+    }
+
+    Map<String, Processor.Factory<SearchResponseProcessor>> getResponseProcessorFactories() {
+        return responseProcessorFactories;
     }
 
     @Override
     public SearchPipelineInfo info() {
-        List<ProcessorInfo> processorInfoList = new ArrayList<>();
-        for (Map.Entry<String, Processor.Factory> entry : processorFactories.entrySet()) {
-            processorInfoList.add(new ProcessorInfo(entry.getKey()));
-        }
-        return new SearchPipelineInfo(processorInfoList);
+        List<ProcessorInfo> requestProcessorInfoList = requestProcessorFactories.keySet()
+            .stream()
+            .map(ProcessorInfo::new)
+            .collect(Collectors.toList());
+        List<ProcessorInfo> responseProcessorInfoList = responseProcessorFactories.keySet()
+            .stream()
+            .map(ProcessorInfo::new)
+            .collect(Collectors.toList());
+        return new SearchPipelineInfo(
+            Map.of(Pipeline.REQUEST_PROCESSORS_KEY, requestProcessorInfoList, Pipeline.RESPONSE_PROCESSORS_KEY, responseProcessorInfoList)
+        );
     }
 
     public static List<PipelineConfiguration> getPipelines(ClusterState clusterState, String... ids) {
diff --git a/server/src/test/java/org/opensearch/nodesinfo/NodeInfoStreamingTests.java b/server/src/test/java/org/opensearch/nodesinfo/NodeInfoStreamingTests.java
index bec921bc5bf5d..cdd1c682b40dc 100644
--- a/server/src/test/java/org/opensearch/nodesinfo/NodeInfoStreamingTests.java
+++ b/server/src/test/java/org/opensearch/nodesinfo/NodeInfoStreamingTests.java
@@ -251,7 +251,7 @@ private static NodeInfo createNodeInfo() {
             for (int i = 0; i < numProcessors; i++) {
                 processors.add(new org.opensearch.search.pipeline.ProcessorInfo(randomAlphaOfLengthBetween(3, 10)));
             }
-            searchPipelineInfo = new SearchPipelineInfo(processors);
+            searchPipelineInfo = new SearchPipelineInfo(Map.of(randomAlphaOfLengthBetween(3, 10), processors));
         }
 
         return new NodeInfo(
diff --git a/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineInfoTests.java b/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineInfoTests.java
new file mode 100644
index 0000000000000..6eb137cb28e8f
--- /dev/null
+++ b/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineInfoTests.java
@@ -0,0 +1,75 @@
+/*
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * The OpenSearch Contributors require contributions made to
+ * this file be licensed under the Apache-2.0 license or a
+ * compatible open source license.
+ */
+
+package org.opensearch.search.pipeline;
+
+import org.opensearch.Version;
+import org.opensearch.common.io.stream.BytesStreamOutput;
+import org.opensearch.common.io.stream.StreamInput;
+import org.opensearch.test.OpenSearchTestCase;
+
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
+
+public class SearchPipelineInfoTests extends OpenSearchTestCase {
+    public void testSerializationRoundtrip() throws IOException {
+        SearchPipelineInfo searchPipelineInfo = new SearchPipelineInfo(
+            Map.of(
+                "a",
+                List.of(new ProcessorInfo("a1"), new ProcessorInfo("a2"), new ProcessorInfo("a3")),
+                "b",
+                List.of(new ProcessorInfo("b1"), new ProcessorInfo("b2")),
+                "c",
+                List.of(new ProcessorInfo("c1"))
+            )
+        );
+        SearchPipelineInfo deserialized;
+        try (BytesStreamOutput bytesStreamOutput = new BytesStreamOutput()) {
+            searchPipelineInfo.writeTo(bytesStreamOutput);
+            try (StreamInput bytesStreamInput = bytesStreamOutput.bytes().streamInput()) {
+                deserialized = new SearchPipelineInfo(bytesStreamInput);
+            }
+        }
+        assertTrue(deserialized.containsProcessor("a", "a1"));
+        assertTrue(deserialized.containsProcessor("a", "a2"));
+        assertTrue(deserialized.containsProcessor("a", "a3"));
+        assertTrue(deserialized.containsProcessor("b", "b1"));
+        assertTrue(deserialized.containsProcessor("b", "b2"));
+        assertTrue(deserialized.containsProcessor("c", "c1"));
+    }
+
+    /**
+     * When serializing / deserializing to / from old versions, processor type info is lost.
+     *
+     * Also, we only supported request/response processors.
+     */
+    public void testSerializationRoundtripBackcompat() throws IOException {
+        SearchPipelineInfo searchPipelineInfo = new SearchPipelineInfo(
+            Map.of(
+                Pipeline.REQUEST_PROCESSORS_KEY,
+                List.of(new ProcessorInfo("a1"), new ProcessorInfo("a2"), new ProcessorInfo("a3")),
+                Pipeline.RESPONSE_PROCESSORS_KEY,
+                List.of(new ProcessorInfo("b1"), new ProcessorInfo("b2"))
+            )
+        );
+        SearchPipelineInfo deserialized;
+        try (BytesStreamOutput bytesStreamOutput = new BytesStreamOutput()) {
+            bytesStreamOutput.setVersion(Version.V_2_7_0);
+            searchPipelineInfo.writeTo(bytesStreamOutput);
+            try (StreamInput bytesStreamInput = bytesStreamOutput.bytes().streamInput()) {
+                bytesStreamInput.setVersion(Version.V_2_7_0);
+                deserialized = new SearchPipelineInfo(bytesStreamInput);
+            }
+        }
+        for (String proc : List.of("a1", "a2", "a3", "b1", "b2")) {
+            assertTrue(deserialized.containsProcessor(Pipeline.REQUEST_PROCESSORS_KEY, proc));
+            assertTrue(deserialized.containsProcessor(Pipeline.RESPONSE_PROCESSORS_KEY, proc));
+        }
+    }
+}
diff --git a/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineServiceTests.java b/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineServiceTests.java
index 36978d5310810..516227e9a13d8 100644
--- a/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineServiceTests.java
+++ b/server/src/test/java/org/opensearch/search/pipeline/SearchPipelineServiceTests.java
@@ -60,9 +60,13 @@ public class SearchPipelineServiceTests extends OpenSearchTestCase {
 
     private static final SearchPipelinePlugin DUMMY_PLUGIN = new SearchPipelinePlugin() {
         @Override
-        public Map<String, Processor.Factory> getProcessors(Processor.Parameters parameters) {
+        public Map<String, Processor.Factory<SearchRequestProcessor>> getRequestProcessors(Processor.Parameters parameters) {
             return Map.of("foo", (factories, tag, description, config) -> null);
         }
+
+        public Map<String, Processor.Factory<SearchResponseProcessor>> getResponseProcessors(Processor.Parameters parameters) {
+            return Map.of("bar", (factories, tag, description, config) -> null);
+        }
     };
 
     private ThreadPool threadPool;
@@ -89,9 +93,14 @@ public void testSearchPipelinePlugin() {
             client,
             false
         );
-        Map<String, Processor.Factory> factories = searchPipelineService.getProcessorFactories();
-        assertEquals(1, factories.size());
-        assertTrue(factories.containsKey("foo"));
+        Map<String, Processor.Factory<SearchRequestProcessor>> requestProcessorFactories = searchPipelineService
+            .getRequestProcessorFactories();
+        assertEquals(1, requestProcessorFactories.size());
+        assertTrue(requestProcessorFactories.containsKey("foo"));
+        Map<String, Processor.Factory<SearchResponseProcessor>> responseProcessorFactories = searchPipelineService
+            .getResponseProcessorFactories();
+        assertEquals(1, responseProcessorFactories.size());
+        assertTrue(responseProcessorFactories.containsKey("bar"));
     }
 
     public void testSearchPipelinePluginDuplicate() {
@@ -235,8 +244,8 @@ public SearchResponse processResponse(SearchRequest request, SearchResponse resp
     }
 
     private SearchPipelineService createWithProcessors() {
-        Map<String, Processor.Factory> processors = new HashMap<>();
-        processors.put("scale_request_size", (processorFactories, tag, description, config) -> {
+        Map<String, Processor.Factory<SearchRequestProcessor>> requestProcessors = new HashMap<>();
+        requestProcessors.put("scale_request_size", (processorFactories, tag, description, config) -> {
             float scale = ((Number) config.remove("scale")).floatValue();
             return new FakeRequestProcessor(
                 "scale_request_size",
@@ -245,11 +254,12 @@ private SearchPipelineService createWithProcessors() {
                 req -> req.source().size((int) (req.source().size() * scale))
             );
         });
-        processors.put("fixed_score", (processorFactories, tag, description, config) -> {
+        Map<String, Processor.Factory<SearchResponseProcessor>> responseProcessors = new HashMap<>();
+        responseProcessors.put("fixed_score", (processorFactories, tag, description, config) -> {
             float score = ((Number) config.remove("score")).floatValue();
             return new FakeResponseProcessor("fixed_score", tag, description, rsp -> rsp.getHits().forEach(h -> h.score(score)));
         });
-        return createWithProcessors(processors);
+        return createWithProcessors(requestProcessors, responseProcessors);
     }
 
     @Override
@@ -258,7 +268,10 @@ protected NamedWriteableRegistry writableRegistry() {
         return new NamedWriteableRegistry(searchModule.getNamedWriteables());
     }
 
-    private SearchPipelineService createWithProcessors(Map<String, Processor.Factory> processors) {
+    private SearchPipelineService createWithProcessors(
+        Map<String, Processor.Factory<SearchRequestProcessor>> requestProcessors,
+        Map<String, Processor.Factory<SearchResponseProcessor>> responseProcessors
+    ) {
         Client client = mock(Client.class);
         ThreadPool threadPool = mock(ThreadPool.class);
         ExecutorService executorService = OpenSearchExecutors.newDirectExecutorService();
@@ -274,8 +287,13 @@ private SearchPipelineService createWithProcessors(Map<String, Processor.Factory
             this.writableRegistry(),
             Collections.singletonList(new SearchPipelinePlugin() {
                 @Override
-                public Map<String, Processor.Factory> getProcessors(Processor.Parameters parameters) {
-                    return processors;
+                public Map<String, Processor.Factory<SearchRequestProcessor>> getRequestProcessors(Processor.Parameters parameters) {
+                    return requestProcessors;
+                }
+
+                @Override
+                public Map<String, Processor.Factory<SearchResponseProcessor>> getResponseProcessors(Processor.Parameters parameters) {
+                    return responseProcessors;
                 }
             }),
             client,
@@ -619,13 +637,14 @@ public void testValidatePipeline() throws Exception {
             XContentType.JSON
         );
 
+        SearchPipelineInfo completePipelineInfo = new SearchPipelineInfo(
+            Map.of(Pipeline.REQUEST_PROCESSORS_KEY, List.of(reqProcessor), Pipeline.RESPONSE_PROCESSORS_KEY, List.of(rspProcessor))
+        );
+        SearchPipelineInfo incompletePipelineInfo = new SearchPipelineInfo(Map.of(Pipeline.REQUEST_PROCESSORS_KEY, List.of(reqProcessor)));
         // One node is missing a processor
         expectThrows(
             OpenSearchParseException.class,
-            () -> searchPipelineService.validatePipeline(
-                Map.of(n1, new SearchPipelineInfo(List.of(reqProcessor, rspProcessor)), n2, new SearchPipelineInfo(List.of(reqProcessor))),
-                putRequest
-            )
+            () -> searchPipelineService.validatePipeline(Map.of(n1, completePipelineInfo, n2, incompletePipelineInfo), putRequest)
         );
 
         // Discovery failed, no infos passed.
@@ -644,27 +663,11 @@ public void testValidatePipeline() throws Exception {
         );
         expectThrows(
             ClassCastException.class,
-            () -> searchPipelineService.validatePipeline(
-                Map.of(
-                    n1,
-                    new SearchPipelineInfo(List.of(reqProcessor, rspProcessor)),
-                    n2,
-                    new SearchPipelineInfo(List.of(reqProcessor, rspProcessor))
-                ),
-                badPutRequest
-            )
+            () -> searchPipelineService.validatePipeline(Map.of(n1, completePipelineInfo, n2, completePipelineInfo), badPutRequest)
         );
 
         // Success
-        searchPipelineService.validatePipeline(
-            Map.of(
-                n1,
-                new SearchPipelineInfo(List.of(reqProcessor, rspProcessor)),
-                n2,
-                new SearchPipelineInfo(List.of(reqProcessor, rspProcessor))
-            ),
-            putRequest
-        );
+        searchPipelineService.validatePipeline(Map.of(n1, completePipelineInfo, n2, completePipelineInfo), putRequest);
     }
 
     /**
@@ -717,7 +720,7 @@ public void testInlinePipeline() throws Exception {
     public void testInfo() {
         SearchPipelineService searchPipelineService = createWithProcessors();
         SearchPipelineInfo info = searchPipelineService.info();
-        assertTrue(info.containsProcessor("scale_request_size"));
-        assertTrue(info.containsProcessor("fixed_score"));
+        assertTrue(info.containsProcessor(Pipeline.REQUEST_PROCESSORS_KEY, "scale_request_size"));
+        assertTrue(info.containsProcessor(Pipeline.RESPONSE_PROCESSORS_KEY, "fixed_score"));
     }
 }