From b80da7aea48961333387dbaa3a46f9204b39a1d5 Mon Sep 17 00:00:00 2001
From: Johnny Eric Amancio <johnnyeric@gmail.com>
Date: Mon, 31 Aug 2026 13:07:11 +0200
Subject: [PATCH] feat(ai-gateway): add MiniMax M3 to auto free

---
 apps/web/src/lib/ai-gateway/models.test.ts | 15 +++++++++++----
 apps/web/src/lib/ai-gateway/models.ts      | 11 ++++++++++-
 2 files changed, 21 insertions(+), 5 deletions(-)

diff --git a/apps/web/src/lib/ai-gateway/models.test.ts b/apps/web/src/lib/ai-gateway/models.test.ts
index abc494fc9f..5f9b5bb362 100644
--- a/apps/web/src/lib/ai-gateway/models.test.ts
+++ b/apps/web/src/lib/ai-gateway/models.test.ts
@@ -114,6 +114,7 @@ describe('isFreeModel', () => {
         internalId: 'minimax/minimax-m3-free',
         contextLength: 1_048_576,
         vision: true,
+        isAutoFree: true,
       },
       {
         name: 'MiniMax M2.7',
@@ -122,10 +123,11 @@ describe('isFreeModel', () => {
         internalId: 'minimax/minimax-m2.7-free',
         contextLength: 196_608,
         vision: false,
+        isAutoFree: false,
       },
     ])(
       'registers $name as a free Vercel GMI Cloud model',
-      async ({ model, publicId, internalId, contextLength, vision }) => {
+      async ({ model, publicId, internalId, contextLength, vision, isAutoFree }) => {
         expect(findKiloExclusiveModel(model.public_id)).toBe(model);
         expect(await isFreeModel(model.public_id)).toBe(true);
         expect(model).toMatchObject({
@@ -140,7 +142,10 @@ describe('isFreeModel', () => {
         expect(model.flags.includes('reasoning')).toBe(true);
         expect(model.flags.includes('vision')).toBe(vision);
         expect(getInferenceProvider(model)?.slug).toBe('gmicloud');
-        expect(preferredModels).not.toContain(model.public_id);
+        expect(autoFreeModels.some(({ model: modelId }) => modelId === model.public_id)).toBe(
+          isAutoFree
+        );
+        expect(preferredModels.includes(model.public_id)).toBe(isAutoFree);
       }
     );
 
@@ -235,16 +240,18 @@ describe('isFreeModel', () => {
         'stepfun/step-3.7-flash:free': { enabled: true, effort: 'high' },
         'poolside/laguna-s-2.1:free': { enabled: true, effort: 'high' },
         'meituan/longcat-2.0-free': { enabled: true, effort: 'high' },
+        'minimax/minimax-m3:free': { enabled: true, effort: 'high' },
       });
     });
 
-    test('weights Auto Free models at 7:1:1 for StepFun, Laguna, and LongCat', () => {
+    test('weights every Auto Free model equally', () => {
       expect(
         Object.fromEntries(autoFreeModels.map(({ model, weight }) => [model, weight]))
       ).toEqual({
-        'stepfun/step-3.7-flash:free': 7,
+        'stepfun/step-3.7-flash:free': 1,
         'poolside/laguna-s-2.1:free': 1,
         'meituan/longcat-2.0-free': 1,
+        'minimax/minimax-m3:free': 1,
       });
     });
 
diff --git a/apps/web/src/lib/ai-gateway/models.ts b/apps/web/src/lib/ai-gateway/models.ts
index 622a6b2709..e5cd4102cc 100644
--- a/apps/web/src/lib/ai-gateway/models.ts
+++ b/apps/web/src/lib/ai-gateway/models.ts
@@ -51,7 +51,7 @@ export const autoFreeModels: ReadonlyArray<AutoFreeModel> = [
     ? [
         {
           model: stepfun_37_flash_free_model.public_id,
-          weight: 7,
+          weight: 1,
           reasoning: { enabled: true, effort: 'high' },
         } satisfies AutoFreeModel,
       ]
@@ -79,6 +79,15 @@ export const autoFreeModels: ReadonlyArray<AutoFreeModel> = [
         } satisfies AutoFreeModel,
       ]
     : []),
+  ...(minimax_m3_free_model.status === 'public'
+    ? [
+        {
+          model: minimax_m3_free_model.public_id,
+          weight: 1,
+          reasoning: { enabled: true, effort: 'high' },
+        } satisfies AutoFreeModel,
+      ]
+    : []),
 ];
 
 export function selectAutoFreeCandidate(