feat: upgrade MiniMax provider to M2.7 models

Add MiniMax-M2.7 and MiniMax-M2.7-highspeed as the recommended models,
with thinking-tag stripping for M2.7's chain-of-thought output.
Existing M2.5 models remain available for backward compatibility.

Co-Authored-By: Octopus <liyuan851277048@icloud.com>

Author: octo-patch

packages/core/lib/v3/llm/LLMProvider.ts

@@ -98,6 +98,8 @@ const modelToProviderMap: { [key in AvailableModel]: ModelProvider } = {
   "gemini-2.0-flash": "google",
   "gemini-2.5-flash-preview-04-17": "google",
   "gemini-2.5-pro-preview-03-25": "google",
+  "minimax-MiniMax-M2.7": "minimax",
+  "minimax-MiniMax-M2.7-highspeed": "minimax",
   "minimax-MiniMax-M2.5": "minimax",
   "minimax-MiniMax-M2.5-highspeed": "minimax",
 };

packages/core/lib/v3/llm/MiniMaxClient.ts

@@ -40,10 +40,19 @@ export class MiniMaxClient extends LLMClient {
     this.clientOptions = clientOptions;
   }
 
+  /**
+   * Strip thinking tags from M2.7 model responses.
+   * M2.7 models include `<think>...</think>` blocks in their output.
+   */
+  private stripThinking(content: string | null): string | null {
+    if (!content) return content;
+    return content.replace(/<think>[\s\S]*?<\/think>\s*/g, "").trim() || null;
+  }
+
   /**
    * Extract the actual model name to send to the MiniMax API.
-   * Handles both modern format (minimax/MiniMax-M2.5) and
-   * deprecated format (minimax-MiniMax-M2.5).
+   * Handles both modern format (minimax/MiniMax-M2.7) and
+   * deprecated format (minimax-MiniMax-M2.7).
    */
   private getApiModelName(): string {
     if (this.modelName.includes("/")) {
@@ -171,6 +180,10 @@ export class MiniMaxClient extends LLMClient {
         tool_choice: options.tool_choice || "auto",
       });
 
+      // Strip thinking tags from M2.7 model responses
+      const rawContent = apiResponse.choices[0]?.message?.content || null;
+      const cleanedContent = this.stripThinking(rawContent);
+
       // Format the response to match the expected LLMResponse format
       const response: LLMResponse = {
         id: apiResponse.id,
@@ -182,7 +195,7 @@ export class MiniMaxClient extends LLMClient {
             index: 0,
             message: {
               role: "assistant",
-              content: apiResponse.choices[0]?.message?.content || null,
+              content: cleanedContent,
               tool_calls: apiResponse.choices[0]?.message?.tool_calls || [],
             },
             finish_reason: apiResponse.choices[0]?.finish_reason || "stop",

packages/core/lib/v3/types/public/model.ts

@@ -84,6 +84,8 @@ export type AvailableModel =
   | "gemini-2.0-flash"
   | "gemini-2.5-flash-preview-04-17"
   | "gemini-2.5-pro-preview-03-25"
+  | "minimax-MiniMax-M2.7"
+  | "minimax-MiniMax-M2.7-highspeed"
   | "minimax-MiniMax-M2.5"
   | "minimax-MiniMax-M2.5-highspeed"
   | string;

packages/docs/v3/configuration/models.mdx

@@ -226,7 +226,7 @@ import { Stagehand } from "@browserbasehq/stagehand";
 
 const stagehand = new Stagehand({
   env: "BROWSERBASE",
-  model: "minimax/MiniMax-M2.5"
+  model: "minimax/MiniMax-M2.7"
   // API key auto-loads from MINIMAX_API_KEY - set in your .env
 });
 
@@ -235,7 +235,7 @@ await stagehand.init();
 
 </CodeGroup>
 
-Available models: `MiniMax-M2.5` (204K context), `MiniMax-M2.5-highspeed` (204K context, optimized for speed).
+Available models: `MiniMax-M2.7` (recommended), `MiniMax-M2.7-highspeed` (optimized for speed), `MiniMax-M2.5` (204K context), `MiniMax-M2.5-highspeed` (204K context, optimized for speed).
 
 [View all supported MiniMax models →](https://platform.minimaxi.com/document/Models)
 </Tab>
@@ -854,6 +854,8 @@ The following models work without the `provider/` prefix in the model parameter
 </Accordion>
 <Accordion title="MiniMax">
 
+- `minimax-MiniMax-M2.7`
+- `minimax-MiniMax-M2.7-highspeed`
 - `minimax-MiniMax-M2.5`
 - `minimax-MiniMax-M2.5-highspeed`