From 639220b371dbc2dc0d87e7d4751750b132794dee Mon Sep 17 00:00:00 2001
From: Nico Martin <mail@nico.dev>
Date: Fri, 21 Nov 2025 18:15:51 +0100
Subject: [PATCH 1/2] added support for Apertus

---
 src/configs.js | 1 +
 src/models.js  | 9 +++++++++
 2 files changed, 10 insertions(+)

diff --git a/src/configs.js b/src/configs.js
index e0976e34e..a6625f2ee 100644
--- a/src/configs.js
+++ b/src/configs.js
@@ -111,6 +111,7 @@ function getNormalizedConfig(config) {
         case 'llama':
         case 'llama4_text':
         case 'nanochat':
+        case 'apertus':
         case 'arcee':
         case 'lfm2':
         case 'smollm3':
diff --git a/src/models.js b/src/models.js
index e12ff978c..33f175b29 100644
--- a/src/models.js
+++ b/src/models.js
@@ -4752,6 +4752,13 @@ export class NanoChatModel extends NanoChatPreTrainedModel {}
 export class NanoChatForCausalLM extends NanoChatPreTrainedModel {}
 //////////////////////////////////////////////////
 
+//////////////////////////////////////////////////
+// Apertus models
+export class ApertusPreTrainedModel extends PreTrainedModel {}
+export class ApertusModel extends ApertusPreTrainedModel {}
+export class ApertusForCausalLM extends ApertusPreTrainedModel {}
+//////////////////////////////////////////////////
+
 //////////////////////////////////////////////////
 // Arcee models
 export class ArceePreTrainedModel extends PreTrainedModel {}
@@ -8193,6 +8200,7 @@ const MODEL_MAPPING_NAMES_DECODER_ONLY = new Map([
     ['gpt_neox', ['GPTNeoXModel', GPTNeoXModel]],
     ['codegen', ['CodeGenModel', CodeGenModel]],
     ['llama', ['LlamaModel', LlamaModel]],
+    ['apertus', ['ApertusModel', ApertusModel]],
     ['nanochat', ['NanoChatModel', NanoChatModel]],
     ['arcee', ['ArceeModel', ArceeModel]],
     ['lfm2', ['Lfm2Model', Lfm2Model]],
@@ -8305,6 +8313,7 @@ const MODEL_FOR_CAUSAL_LM_MAPPING_NAMES = new Map([
     ['codegen', ['CodeGenForCausalLM', CodeGenForCausalLM]],
     ['llama', ['LlamaForCausalLM', LlamaForCausalLM]],
     ['nanochat', ['NanoChatForCausalLM', NanoChatForCausalLM]],
+    ['apertus', ['ApertusForCausalLM', ApertusForCausalLM]],
     ['llama4_text', ['Llama4ForCausalLM', Llama4ForCausalLM]],
     ['arcee', ['ArceeForCausalLM', ArceeForCausalLM]],
     ['lfm2', ['Lfm2ForCausalLM', Lfm2ForCausalLM]],

From e6af552624cb4d01530354737b1b47b353db97d6 Mon Sep 17 00:00:00 2001
From: Nico Martin <mail@nico.dev>
Date: Sat, 22 Nov 2025 15:40:01 +0100
Subject: [PATCH 2/2] fixed backend loading path

---
 src/backends/onnx.js | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/backends/onnx.js b/src/backends/onnx.js
index 82cb64aae..38e667db9 100644
--- a/src/backends/onnx.js
+++ b/src/backends/onnx.js
@@ -193,11 +193,13 @@ if (ONNX_ENV?.wasm) {
     // By default, we only do this if we are not in a service worker and the wasmPaths are not already set.
     if (
         // @ts-ignore Cannot find name 'ServiceWorkerGlobalScope'.ts(2304)
-        !(typeof ServiceWorkerGlobalScope !== 'undefined' && self instanceof ServiceWorkerGlobalScope) &&
-        env.backends.onnx.versions?.web &&
-        !ONNX_ENV.wasm.wasmPaths
+        (
+            !(typeof ServiceWorkerGlobalScope !== 'undefined' && self instanceof ServiceWorkerGlobalScope) &&
+            ONNX_ENV.versions?.web &&
+            !ONNX_ENV.wasm.wasmPaths
+        )
     ) {
-        const wasmPathPrefix = `https://cdn.jsdelivr.net/npm/onnxruntime-web@${env.backends.onnx.versions.web}/dist/`;
+        const wasmPathPrefix = `https://cdn.jsdelivr.net/npm/onnxruntime-web@${ONNX_ENV.versions.web}/dist/`;
 
         ONNX_ENV.wasm.wasmPaths = apis.IS_SAFARI
             ? {