diff --git a/packages/ai/src/providers/openai-compatible-responses.ts b/packages/ai/src/providers/openai-compatible-responses.ts
index 38293eb1d8d..fe2fc49bc55 100644
--- a/packages/ai/src/providers/openai-compatible-responses.ts
+++ b/packages/ai/src/providers/openai-compatible-responses.ts
@@ -36,7 +36,7 @@ export const configure = (input: Config) => {
   })
   return {
     id: ProviderID.make(provider),
-    model: (modelID: string | ModelID) => route.model({ id: modelID }),
+    model: (modelID: string | ModelID) => route.model<OpenResponsesProviderOptionsInput>({ id: modelID }),
     configure,
   }
 }
@@ -46,7 +46,10 @@ export const provider = {
   configure,
 }
 
-export const model: ProviderPackage.Definition<Settings>["model"] = (modelID, settings) =>
+export const model: ProviderPackage.Definition<Settings, OpenResponsesProviderOptionsInput>["model"] = (
+  modelID,
+  settings,
+) =>
   configure({
     apiKey: settings.apiKey,
     baseURL: settings.baseURL,
diff --git a/packages/ai/test/provider-options/openai-compatible-responses.types.ts b/packages/ai/test/provider-options/openai-compatible-responses.types.ts
new file mode 100644
index 00000000000..cb178b3b971
--- /dev/null
+++ b/packages/ai/test/provider-options/openai-compatible-responses.types.ts
@@ -0,0 +1,13 @@
+import { LLM } from "../../src"
+import { OpenAICompatibleResponses } from "../../src/providers"
+
+const model = OpenAICompatibleResponses.configure({ baseURL: "https://example.com" }).model("model")
+
+LLM.request({ model, prompt: "Hello", providerOptions: { openresponses: { reasoningSummary: "detailed" } } })
+
+LLM.request({
+  model,
+  prompt: "Hello",
+  // @ts-expect-error Open Responses reasoning summaries use a fixed union.
+  providerOptions: { openresponses: { reasoningSummary: "full" } },
+})