feat (provider/mistral): image support

.changeset/grumpy-students-remember.md

@@ -0,0 +1,5 @@
+---
+'@ai-sdk/mistral': patch
+---
+
+feat (provider/mistral): image support

content/docs/02-foundations/02-providers-and-models.mdx

@@ -63,6 +63,7 @@ Here are the capabilities of popular models:
 | [Anthropic](/providers/ai-sdk-providers/anthropic)                       | `claude-3-5-sonnet-20240620` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Mistral](/providers/ai-sdk-providers/mistral)                           | `mistral-large-latest`       | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Mistral](/providers/ai-sdk-providers/mistral)                           | `mistral-small-latest`       | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| [Mistral](/providers/ai-sdk-providers/mistral)                           | `pixtral-12b-2409`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Generative AI](/providers/ai-sdk-providers/google-generative-ai) | `gemini-1.5-flash`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Generative AI](/providers/ai-sdk-providers/google-generative-ai) | `gemini-1.5-pro`             | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Vertex](/providers/ai-sdk-providers/google-vertex)               | `gemini-1.5-flash`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |

content/providers/01-ai-sdk-providers/20-mistral.mdx

@@ -111,15 +111,15 @@ Mistral language models can also be used in the `streamText`, `generateObject`,
 
 ### Model Capabilities
 
-| Model                   | Image Input         | Object Generation   | Tool Usage          | Tool Streaming      |
-| ----------------------- | ------------------- | ------------------- | ------------------- | ------------------- |
-| `mistral-large-latest`  | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `mistral-medium-latest` | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `mistral-small-latest`  | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `open-mistral-nemo`     | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `open-mixtral-8x22b`    | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `open-mixtral-8x7b`     | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
-| `open-mistral-7b`       | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| Model                  | Image Input         | Object Generation   | Tool Usage          | Tool Streaming      |
+| ---------------------- | ------------------- | ------------------- | ------------------- | ------------------- |
+| `mistral-large-latest` | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `mistral-small-latest` | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `pixtral-12b-2409`     | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `open-mistral-nemo`    | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `open-mixtral-8x22b`   | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `open-mixtral-8x7b`    | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| `open-mistral-7b`      | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 
 <Note>
   The table above lists popular models. You can also pass any available provider

content/providers/01-ai-sdk-providers/index.mdx

@@ -26,6 +26,7 @@ Not all providers support all AI SDK features. Here's a quick comparison of the
 | [Anthropic](/providers/ai-sdk-providers/anthropic)                       | `claude-3-5-sonnet-20240620` | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Mistral](/providers/ai-sdk-providers/mistral)                           | `mistral-large-latest`       | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Mistral](/providers/ai-sdk-providers/mistral)                           | `mistral-small-latest`       | <Cross size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
+| [Mistral](/providers/ai-sdk-providers/mistral)                           | `pixtral-12b-2409`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Generative AI](/providers/ai-sdk-providers/google-generative-ai) | `gemini-1.5-flash`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Generative AI](/providers/ai-sdk-providers/google-generative-ai) | `gemini-1.5-pro`             | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |
 | [Google Vertex](/providers/ai-sdk-providers/google-vertex)               | `gemini-1.5-flash`           | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> | <Check size={18} /> |

examples/ai-core/src/generate-text/mistral-multimodal-base64.ts

@@ -0,0 +1,26 @@
+import { mistral } from '@ai-sdk/mistral';
+import { generateText } from 'ai';
+import 'dotenv/config';
+import fs from 'node:fs';
+
+async function main() {
+  const result = await generateText({
+    model: mistral('pixtral-12b-2409'),
+    messages: [
+      {
+        role: 'user',
+        content: [
+          { type: 'text', text: 'Describe the image in detail.' },
+          {
+            type: 'image',
+            image: fs.readFileSync('./data/comic-cat.png').toString('base64'),
+          },
+        ],
+      },
+    ],
+  });
+
+  console.log(result.text);
+}
+
+main().catch(console.error);

examples/ai-core/src/generate-text/mistral-multimodal-url.ts

@@ -0,0 +1,26 @@
+import { mistral } from '@ai-sdk/mistral';
+import { generateText } from 'ai';
+import 'dotenv/config';
+
+async function main() {
+  const result = await generateText({
+    model: mistral('pixtral-12b-2409'),
+    messages: [
+      {
+        role: 'user',
+        content: [
+          { type: 'text', text: 'Describe the image in detail.' },
+          {
+            type: 'image',
+            image:
+              'https://github.com/vercel/ai/blob/main/examples/ai-core/data/comic-cat.png?raw=true',
+          },
+        ],
+      },
+    ],
+  });
+
+  console.log(result.text);
+}
+
+main().catch(console.error);

packages/mistral/src/__snapshots__/convert-to-mistral-chat-messages.test.ts.snap

@@ -0,0 +1,26 @@
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
+
+exports[`tool calls > should stringify arguments to tool calls 1`] = `
+[
+  {
+    "content": "",
+    "role": "assistant",
+    "tool_calls": [
+      {
+        "function": {
+          "arguments": "{"key":"arg-value"}",
+          "name": "tool-1",
+        },
+        "id": "tool-call-id-1",
+        "type": "function",
+      },
+    ],
+  },
+  {
+    "content": "{"key":"result-value"}",
+    "name": "tool-1",
+    "role": "tool",
+    "tool_call_id": "tool-call-id-1",
+  },
+]
+`;

packages/mistral/src/convert-to-mistral-chat-messages.test.ts

@@ -1,5 +1,36 @@
 import { convertToMistralChatMessages } from './convert-to-mistral-chat-messages';
 
+describe('user messages', () => {
+  it('should convert messages with image parts', async () => {
+    const result = convertToMistralChatMessages([
+      {
+        role: 'user',
+        content: [
+          { type: 'text', text: 'Hello' },
+          {
+            type: 'image',
+            image: new Uint8Array([0, 1, 2, 3]),
+            mimeType: 'image/png',
+          },
+        ],
+      },
+    ]);
+
+    expect(result).toEqual([
+      {
+        role: 'user',
+        content: [
+          { type: 'text', text: 'Hello' },
+          {
+            type: 'image_url',
+            image_url: 'data:image/png;base64,AAECAw==',
+          },
+        ],
+      },
+    ]);
+  });
+});
+
 describe('tool calls', () => {
   it('should stringify arguments to tool calls', () => {
     const result = convertToMistralChatMessages([
@@ -27,27 +58,6 @@ describe('tool calls', () => {
       },
     ]);
 
-    expect(result).toEqual([
-      {
-        role: 'assistant',
-        content: '',
-        tool_calls: [
-          {
-            type: 'function',
-            id: 'tool-call-id-1',
-            function: {
-              name: 'tool-1',
-              arguments: JSON.stringify({ key: 'arg-value' }),
-            },
-          },
-        ],
-      },
-      {
-        role: 'tool',
-        content: JSON.stringify({ key: 'result-value' }),
-        name: 'tool-1',
-        tool_call_id: 'tool-call-id-1',
-      },
-    ]);
+    expect(result).toMatchSnapshot();
   });
 });

packages/mistral/src/convert-to-mistral-chat-messages.ts

@@ -1,7 +1,5 @@
-import {
-  LanguageModelV1Prompt,
-  UnsupportedFunctionalityError,
-} from '@ai-sdk/provider';
+import { LanguageModelV1Prompt } from '@ai-sdk/provider';
+import { convertUint8ArrayToBase64 } from '@ai-sdk/provider-utils';
 import { MistralChatPrompt } from './mistral-chat-prompt';
 
 export function convertToMistralChatMessages(
@@ -19,20 +17,24 @@ export function convertToMistralChatMessages(
       case 'user': {
         messages.push({
           role: 'user',
-          content: content
-            .map(part => {
-              switch (part.type) {
-                case 'text': {
-                  return part.text;
-                }
-                case 'image': {
-                  throw new UnsupportedFunctionalityError({
-                    functionality: 'image-part',
-                  });
-                }
+          content: content.map(part => {
+            switch (part.type) {
+              case 'text': {
+                return { type: 'text', text: part.text };
               }
-            })
-            .join(''),
+              case 'image': {
+                return {
+                  type: 'image_url',
+                  image_url:
+                    part.image instanceof URL
+                      ? part.image.toString()
+                      : `data:${
+                          part.mimeType ?? 'image/jpeg'
+                        };base64,${convertUint8ArrayToBase64(part.image)}`,
+                };
+              }
+            }
+          }),
         });
         break;
       }

packages/mistral/src/mistral-chat-language-model.test.ts

@@ -191,7 +191,7 @@ describe('doGenerate', () => {
 
     expect(await server.getRequestBodyJson()).toStrictEqual({
       model: 'mistral-small-latest',
-      messages: [{ role: 'user', content: 'Hello' }],
+      messages: [{ role: 'user', content: [{ type: 'text', text: 'Hello' }] }],
     });
   });
 
@@ -225,7 +225,7 @@ describe('doGenerate', () => {
 
     expect(await server.getRequestBodyJson()).toStrictEqual({
       model: 'mistral-small-latest',
-      messages: [{ role: 'user', content: 'Hello' }],
+      messages: [{ role: 'user', content: [{ type: 'text', text: 'Hello' }] }],
       tools: [
         {
           type: 'function',
@@ -433,7 +433,7 @@ describe('doStream', () => {
     expect(await server.getRequestBodyJson()).toStrictEqual({
       stream: true,
       model: 'mistral-small-latest',
-      messages: [{ role: 'user', content: 'Hello' }],
+      messages: [{ role: 'user', content: [{ type: 'text', text: 'Hello' }] }],
     });
   });
 

packages/mistral/src/mistral-chat-language-model.ts

@@ -32,6 +32,7 @@ type MistralChatConfig = {
 export class MistralChatLanguageModel implements LanguageModelV1 {
   readonly specificationVersion = 'v1';
   readonly defaultObjectGenerationMode = 'json';
+  readonly supportsImageUrls = false;
 
   readonly modelId: MistralChatModelId;
   readonly settings: MistralChatSettings;

packages/mistral/src/mistral-chat-prompt.ts

@@ -13,7 +13,21 @@ export interface MistralSystemMessage {
 
 export interface MistralUserMessage {
   role: 'user';
-  content: string;
+  content: Array<MistralUserMessageContent>;
+}
+
+export type MistralUserMessageContent =
+  | MistralUserMessageTextContent
+  | MistralUserMessageImageContent;
+
+export interface MistralUserMessageImageContent {
+  type: 'image_url';
+  image_url: string;
+}
+
+export interface MistralUserMessageTextContent {
+  type: 'text';
+  text: string;
 }
 
 export interface MistralAssistantMessage {

packages/mistral/src/mistral-chat-settings.ts

@@ -4,8 +4,8 @@ export type MistralChatModelId =
   | 'open-mixtral-8x7b'
   | 'open-mixtral-8x22b'
   | 'open-mistral-nemo'
+  | 'pixtral-12b-2409'
   | 'mistral-small-latest'
-  | 'mistral-medium-latest'
   | 'mistral-large-latest'
   | (string & {});
 

packages/openai/src/convert-to-openai-chat-messages.test.ts

@@ -1,7 +1,7 @@
 import { convertToOpenAIChatMessages } from './convert-to-openai-chat-messages';
 
 describe('user messages', () => {
-  it('should convert messages with image parts to multiple parts', async () => {
+  it('should convert messages with image parts', async () => {
     const result = convertToOpenAIChatMessages({
       prompt: [
         {

packages/openai/src/openai-chat-prompt.ts

@@ -23,9 +23,7 @@ export type ChatCompletionContentPart =
 
 export interface ChatCompletionContentPartImage {
   type: 'image_url';
-  image_url: {
-    url: string;
-  };
+  image_url: { url: string };
 }
 
 export interface ChatCompletionContentPartText {