zen: handle 1m context

packages/console/app/src/routes/zen/util/provider/anthropic.ts

@@ -20,7 +20,7 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
   const isBedrockModelArn = providerModel.startsWith("arn:aws:bedrock:")
   const isBedrockModelID = providerModel.startsWith("global.anthropic.")
   const isBedrock = isBedrockModelArn || isBedrockModelID
-  const isSonnet = reqModel.includes("sonnet")
+  const supports1m = reqModel.includes("sonnet") || reqModel.includes("opus-4-6")
   return {
     format: "anthropic",
     modifyUrl: (providerApi: string, isStream?: boolean) =>
@@ -33,7 +33,7 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
       } else {
         headers.set("x-api-key", apiKey)
         headers.set("anthropic-version", headers.get("anthropic-version") ?? "2023-06-01")
-        if (body.model.startsWith("claude-sonnet-")) {
+        if (supports1m) {
           headers.set("anthropic-beta", "context-1m-2025-08-07")
         }
       }
@@ -43,7 +43,7 @@ export const anthropicHelper: ProviderHelper = ({ reqModel, providerModel }) =>
       ...(isBedrock
         ? {
             anthropic_version: "bedrock-2023-05-31",
-            anthropic_beta: isSonnet ? "context-1m-2025-08-07" : undefined,
+            anthropic_beta: supports1m ? "context-1m-2025-08-07" : undefined,
             model: undefined,
             stream: undefined,
           }