fix(chutes): report cache-read pricing from live catalog (#111253)

extensions/chutes/models.test.ts

@@ -187,7 +187,7 @@ describe("chutes-models", () => {
             input_modalities: ["text", "image"],
             context_length: 200000,
             max_output_length: 16384,
-            pricing: { prompt: 0.1, completion: 0.2 },
+            pricing: { prompt: 0.1, completion: 0.2, input_cache_read: 0.05 },
           },
           { id: "new-provider/simple-model" },
         ],
@@ -201,6 +201,12 @@ describe("chutes-models", () => {
         const secondModel = requireChutesModel(models, 1);
         expect(firstModel.id).toBe("zai-org/GLM-5-TEE");
         expect(secondModel.reasoning).toBe(true);
+        expect(secondModel.cost).toEqual({
+          input: 0.1,
+          output: 0.2,
+          cacheRead: 0.05,
+          cacheWrite: 0,
+        });
         if (!secondModel.compat) {
           throw new Error("expected Chutes API model compat");
         }

extensions/chutes/models.ts

@@ -58,6 +58,7 @@ interface ChutesModelEntry {
   pricing?: {
     prompt?: number;
     completion?: number;
+    input_cache_read?: number;
   };
   [key: string]: unknown;
 }
@@ -127,7 +128,7 @@ export async function discoverChutesModels(accessToken?: string): Promise<ModelD
         cost: {
           input: entry.pricing?.prompt || 0,
           output: entry.pricing?.completion || 0,
-          cacheRead: 0,
+          cacheRead: entry.pricing?.input_cache_read || 0,
           cacheWrite: 0,
         },
         contextWindow: asPositiveSafeInteger(entry.context_length) ?? CHUTES_DEFAULT_CONTEXT_WINDOW,