feat(minimax): update models from M2.1 to M2.5

Update MiniMax models to use the new M2.5 series. This PR includes the M2.5
model updates from MiniMax-M2.5.

- Update default model from MiniMax-M2.1 to MiniMax-M2.5
- Add new M2.5 models with reasoning support (M2.5, M2.5-Lightning)
- Keep M2.1-lightning for backwards compatibility
- Update UI labels to reflect M2.5 as recommended
- Add M2.5 to live model filter

extensions/minimax-portal-auth/index.ts

@@ -8,7 +8,7 @@ import { loginMiniMaxPortalOAuth, type MiniMaxRegion } from "./oauth.js";
 
 const PROVIDER_ID = "minimax-portal";
 const PROVIDER_LABEL = "MiniMax";
-const DEFAULT_MODEL = "MiniMax-M2.1";
+const DEFAULT_MODEL = "MiniMax-M2.5";
 const DEFAULT_BASE_URL_CN = "https://api.minimaxi.com/anthropic";
 const DEFAULT_BASE_URL_GLOBAL = "https://api.minimax.io/anthropic";
 const DEFAULT_CONTEXT_WINDOW = 200000;
@@ -27,11 +27,12 @@ function buildModelDefinition(params: {
   id: string;
   name: string;
   input: Array<"text" | "image">;
+  reasoning?: boolean;
 }) {
   return {
     id: params.id,
     name: params.name,
-    reasoning: false,
+    reasoning: params.reasoning ?? false,
     input: params.input,
     cost: { input: 0, output: 0, cacheRead: 0, cacheWrite: 0 },
     contextWindow: DEFAULT_CONTEXT_WINDOW,
@@ -89,9 +90,10 @@ function createOAuthHandler(region: MiniMaxRegion) {
                     input: ["text"],
                   }),
                   buildModelDefinition({
-                    id: "MiniMax-M2.1-lightning",
-                    name: "MiniMax M2.1 Lightning",
+                    id: "MiniMax-M2.5",
+                    name: "MiniMax M2.5",
                     input: ["text"],
+                    reasoning: true,
                   }),
                 ],
               },
@@ -101,7 +103,7 @@ function createOAuthHandler(region: MiniMaxRegion) {
             defaults: {
               models: {
                 [modelRef("MiniMax-M2.1")]: { alias: "minimax-m2.1" },
-                [modelRef("MiniMax-M2.1-lightning")]: { alias: "minimax-m2.1-lightning" },
+                [modelRef("MiniMax-M2.5")]: { alias: "minimax-m2.5" },
               },
             },
           },

src/agents/live-model-filter.ts

@@ -20,7 +20,7 @@ const CODEX_MODELS = [
 ];
 const GOOGLE_PREFIXES = ["gemini-3"];
 const ZAI_PREFIXES = ["glm-5", "glm-4.7", "glm-4.7-flash", "glm-4.7-flashx"];
-const MINIMAX_PREFIXES = ["minimax-m2.1"];
+const MINIMAX_PREFIXES = ["minimax-m2.1", "minimax-m2.5"];
 const XAI_PREFIXES = ["grok-4"];
 
 function matchesPrefix(id: string, prefixes: string[]): boolean {

src/agents/models-config.providers.ts

@@ -317,6 +317,15 @@ function buildMinimaxProvider(): ProviderConfig {
         contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
         maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
       },
+      {
+        id: "MiniMax-M2.1-lightning",
+        name: "MiniMax M2.1 Lightning",
+        reasoning: false,
+        input: ["text"],
+        cost: MINIMAX_API_COST,
+        contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
+        maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
+      },
       {
         id: MINIMAX_DEFAULT_VISION_MODEL_ID,
         name: "MiniMax VL 01",
@@ -326,6 +335,24 @@ function buildMinimaxProvider(): ProviderConfig {
         contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
         maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
       },
+      {
+        id: "MiniMax-M2.5",
+        name: "MiniMax M2.5",
+        reasoning: true,
+        input: ["text"],
+        cost: MINIMAX_API_COST,
+        contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
+        maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
+      },
+      {
+        id: "MiniMax-M2.5-Lightning",
+        name: "MiniMax M2.5 Lightning",
+        reasoning: true,
+        input: ["text"],
+        cost: MINIMAX_API_COST,
+        contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
+        maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
+      },
     ],
   };
 }
@@ -344,6 +371,15 @@ function buildMinimaxPortalProvider(): ProviderConfig {
         contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
         maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
       },
+      {
+        id: "MiniMax-M2.5",
+        name: "MiniMax M2.5",
+        reasoning: true,
+        input: ["text"],
+        cost: MINIMAX_API_COST,
+        contextWindow: MINIMAX_DEFAULT_CONTEXT_WINDOW,
+        maxTokens: MINIMAX_DEFAULT_MAX_TOKENS,
+      },
     ],
   };
 }

src/commands/auth-choice-options.ts

@@ -57,7 +57,7 @@ const AUTH_CHOICE_GROUP_DEFS: {
   {
     value: "minimax",
     label: "MiniMax",
-    hint: "M2.1 (recommended)",
+    hint: "M2.5 (recommended)",
     choices: ["minimax-portal", "minimax-api", "minimax-api-lightning"],
   },
   {
@@ -285,10 +285,10 @@ export function buildAuthChoiceOptions(params: {
     label: "OpenCode Zen (multi-model proxy)",
     hint: "Claude, GPT, Gemini via opencode.ai/zen",
   });
-  options.push({ value: "minimax-api", label: "MiniMax M2.1" });
+  options.push({ value: "minimax-api", label: "MiniMax M2.5" });
   options.push({
     value: "minimax-api-lightning",
-    label: "MiniMax M2.1 Lightning",
+    label: "MiniMax M2.5 Lightning",
     hint: "Faster, higher output cost",
   });
   options.push({ value: "custom-api-key", label: "Custom Provider" });

src/commands/auth-choice.apply.minimax.ts

@@ -55,7 +55,7 @@ export async function applyAuthChoiceMiniMax(
     params.authChoice === "minimax-api-lightning"
   ) {
     const modelId =
-      params.authChoice === "minimax-api-lightning" ? "MiniMax-M2.1-lightning" : "MiniMax-M2.1";
+      params.authChoice === "minimax-api-lightning" ? "MiniMax-M2.5-Lightning" : "MiniMax-M2.5";
     let hasCredential = false;
     const envKey = resolveEnvApiKey("minimax");
     if (envKey) {

src/commands/onboard-auth.models.ts

@@ -80,6 +80,8 @@ const MINIMAX_MODEL_CATALOG = {
     name: "MiniMax M2.1 Lightning",
     reasoning: false,
   },
+  "MiniMax-M2.5": { name: "MiniMax M2.5", reasoning: true },
+  "MiniMax-M2.5-Lightning": { name: "MiniMax M2.5 Lightning", reasoning: true },
 } as const;
 
 type MinimaxCatalogId = keyof typeof MINIMAX_MODEL_CATALOG;