feat(ai-openrouter): upgrade openrouter SDK to 0.12.14, add builtin structured output support, and refresh models (#312)

* Update openrouter package, models, and scripts to generate openrouter models
Fixes #310

* ci: apply automated fixes

* Added compare script and fixed key name issue in fetch models
Fixes #310

* resolved coderabbit issues

* ci: apply automated fixes

* Added support for openrouter structured output

* Address PR #312 review feedback: improve error handling and cleanup

- Add explicit guard for empty content in structuredOutput before JSON.parse
- Remove redundant Sets in compare script (Map.has() is already O(1))
- Suppress stderr leaks from execSync in compare script
- Update example to use valid model name

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Update model metadata and pricing in OpenRouter, add new models, and refactor parameter handling

- Introduced new models: AI21 Jamba Large 1.7, AionLabs Aion-1.0, AionLabs Aion-1.0 Mini, AionLabs Aion-2.0, AionLabs Aion-RP Llama 3.1 8B, AlfredPros CodeLLaMa 7B Instruct Solidity, and Tongyi DeepResearch 30B A3B.
- Updated existing model parameters, including context windows and max output tokens.
- Refactored parameter handling in scripts to improve consistency and readability, including the introduction of a mapping function for API parameters.
- Adjusted pricing structures for several models to reflect updated costs.
- Ensured all model entries are sorted for better organization.

* ci: apply automated fixes

* Update openrouter package models and added prettier to fetch script
Fixes #310

* Updated models and script
Fixes #310

* ci: apply automated fixes

* Update openrouter package to 0.9.11
Fixes #310

* Refactor OpenRouter options passthrough and bump fal client

Spread modelOptions first in request construction so provider-specific
options pass through correctly, only override with explicit options when
defined. Remove unused InternalTextProviderOptions import. Bump
@fal-ai/client to ^1.9.4.

Fixes #310

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* Refactor text-provider-options to derive types from SDK's ChatGenerationParams

Replace hand-written interfaces with type aliases derived from
@openrouter/sdk's ChatGenerationParams, eliminating type drift and
keeping provider options aligned with the SDK automatically.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* ci: apply automated fixes

* Changeset updated
Fixes #310

* ci: apply automated fixes

* chore(ai-openrouter): upgrade @openrouter/sdk to 0.12.13

The SDK renamed every chat-related exported type (ChatGenerationParams →
ChatRequest, ChatResponse → ChatResult, etc.) and renamed the request
wrapper key on chat.send from chatGenerationParams to chatRequest.
Migrate adapters and tests to the new names.

The SDK also narrowed ChatRequest to OpenAI-compatible fields, so Zod
strips topK/topA/minP/repetitionPenalty/includeReasoning/verbosity/
webSearchOptions from outbound requests. Drop these keys from
OpenRouterBaseOptions and the model catalog so callers get a TS error
instead of silent no-op behavior, and add them to excludedParams in the
catalog generator so future syncs stay honest.

Also restore the SDK-derived shape of text-provider-options that was
lost to an upstream merge, re-keyed off ChatRequest.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* ci: apply automated fixes

* chore(ai-openrouter): expand changeset, wire format into generate:models

Rewrite the ai-openrouter changeset to reflect the full scope of the PR:
the 0.12.13 SDK bump (not 0.9.11), the ChatGenerationParams -> ChatRequest
rename, and the deliberate removal of topK/topA/minP/repetitionPenalty/
includeReasoning/verbosity/webSearchOptions from OpenRouterBaseOptions
so callers get a TS error instead of silent stripping.

Append pnpm format to generate:models so regenerated model-meta and
provider files land formatted in a single command. Remove the now-unused
compare-openrouter-models.ts script — the models file is sorted
alphabetically so a plain git diff is sufficient.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* Corrected openrouter params  in example
Fixes #310

* chore(ai-openrouter): bump @openrouter/sdk to 0.12.14

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore(ai-openrouter): clarify changeset, tidy image error check, document common options

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* docs(ai-openrouter): explain modelOptions-first spread ordering in text adapter

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(ai-openrouter): apply OpenAI-strict transformation to structuredOutput schemas

OpenRouter forwards `json_schema` requests with `strict: true` to upstream
providers (notably OpenAI), which reject schemas that don't mark every property
required and set `additionalProperties: false`. Run the schema through
`convertSchemaToJsonSchema(..., { forStructuredOutput: true })` before sending
so Zod / ArkType / Valibot schemas work out of the box.

Adds adapter-level regression tests covering the transformation (nested
objects, arrays, optional-to-nullable widening) and a structured-output
example page in `ts-react-chat` to exercise the path end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

.changeset/giant-garlics-crash.md

@@ -0,0 +1,15 @@
+---
+'@tanstack/ai-openrouter': patch
+---
+
+- Upgrade `@openrouter/sdk` to 0.12.14 (from 0.3.15)
+- Migrate adapters and tests to the SDK's renamed chat types (`ChatGenerationParams` → `ChatRequest`, `ChatResponse` → `ChatResult`) and the renamed `chatRequest` key on `chat.send`
+- Derive `text-provider-options` types from the SDK's `ChatRequest` so provider options stay in lockstep with the SDK surface
+- Drop `topK` / `topA` / `minP` / `repetitionPenalty` / `includeReasoning` / `verbosity` / `webSearchOptions` from `OpenRouterBaseOptions` now that the SDK narrows `ChatRequest` to OpenAI-compatible fields — callers passing these previously saw them silently stripped at runtime, and now get a TypeScript error instead
+- Add those same keys to `excludedParams` in the model-catalog generator so future syncs don't reintroduce them
+- Switch `structuredOutput` to the SDK's native `responseFormat: { type: 'json_schema' }` instead of coercing the model via a forced `structured_output` tool call — the schema now flows straight to the provider, yielding cleaner responses and dropping the dummy-tool round-trip
+- Apply the OpenAI-strict schema transformation (`additionalProperties: false`, all properties required, optional fields widened to include `null`) inside `structuredOutput` before forwarding — without this, upstream OpenAI rejected the request with "Provider returned error" for schemas generated by Zod / ArkType / Valibot
+- Refactor options passthrough to use camelCase naming convention
+- Refresh the model catalog with the latest OpenRouter models (Opus 4.6, Sonnet 4.6, Gemini 3.1 Pro, etc.) and remove the deprecated `openrouter/auto` model
+- Unify the outbound request payload envelope
+- Improve error handling and add tests for nested payloads, structured output parsing, and error cases

.changeset/sync-models.md

@@ -1,4 +1,5 @@
 ---
+'@tanstack/ai-anthropic': patch
 '@tanstack/ai-openrouter': patch
 ---
 

examples/ts-react-chat/src/components/Header.tsx

@@ -2,6 +2,7 @@ import { Link } from '@tanstack/react-router'
 
 import { useState } from 'react'
 import {
+  Braces,
   FileAudio,
   FileText,
   Guitar,
@@ -138,6 +139,19 @@ export default function Header() {
             <span className="font-medium">Video Generation</span>
           </Link>
 
+          <Link
+            to="/generations/structured-output"
+            onClick={() => setIsOpen(false)}
+            className="flex items-center gap-3 p-3 rounded-lg hover:bg-gray-800 transition-colors mb-1"
+            activeProps={{
+              className:
+                'flex items-center gap-3 p-3 rounded-lg bg-cyan-600 hover:bg-cyan-700 transition-colors mb-1',
+            }}
+          >
+            <Braces size={20} />
+            <span className="font-medium">Structured Output (OpenRouter)</span>
+          </Link>
+
           <hr className="border-gray-700 my-2" />
 
           <p className="text-xs text-gray-500 uppercase tracking-wider px-3 pt-2 pb-1">

examples/ts-react-chat/src/routeTree.gen.ts

@@ -15,11 +15,13 @@ import { Route as IndexRouteImport } from './routes/index'
 import { Route as GenerationsVideoRouteImport } from './routes/generations.video'
 import { Route as GenerationsTranscriptionRouteImport } from './routes/generations.transcription'
 import { Route as GenerationsSummarizeRouteImport } from './routes/generations.summarize'
+import { Route as GenerationsStructuredOutputRouteImport } from './routes/generations.structured-output'
 import { Route as GenerationsSpeechRouteImport } from './routes/generations.speech'
 import { Route as GenerationsImageRouteImport } from './routes/generations.image'
 import { Route as ApiTranscribeRouteImport } from './routes/api.transcribe'
 import { Route as ApiTanchatRouteImport } from './routes/api.tanchat'
 import { Route as ApiSummarizeRouteImport } from './routes/api.summarize'
+import { Route as ApiStructuredOutputRouteImport } from './routes/api.structured-output'
 import { Route as ApiImageGenRouteImport } from './routes/api.image-gen'
 import { Route as ExampleGuitarsIndexRouteImport } from './routes/example.guitars/index'
 import { Route as ExampleGuitarsGuitarIdRouteImport } from './routes/example.guitars/$guitarId'
@@ -58,6 +60,12 @@ const GenerationsSummarizeRoute = GenerationsSummarizeRouteImport.update({
   path: '/generations/summarize',
   getParentRoute: () => rootRouteImport,
 } as any)
+const GenerationsStructuredOutputRoute =
+  GenerationsStructuredOutputRouteImport.update({
+    id: '/generations/structured-output',
+    path: '/generations/structured-output',
+    getParentRoute: () => rootRouteImport,
+  } as any)
 const GenerationsSpeechRoute = GenerationsSpeechRouteImport.update({
   id: '/generations/speech',
   path: '/generations/speech',
@@ -83,6 +91,11 @@ const ApiSummarizeRoute = ApiSummarizeRouteImport.update({
   path: '/api/summarize',
   getParentRoute: () => rootRouteImport,
 } as any)
+const ApiStructuredOutputRoute = ApiStructuredOutputRouteImport.update({
+  id: '/api/structured-output',
+  path: '/api/structured-output',
+  getParentRoute: () => rootRouteImport,
+} as any)
 const ApiImageGenRoute = ApiImageGenRouteImport.update({
   id: '/api/image-gen',
   path: '/api/image-gen',
@@ -119,11 +132,13 @@ export interface FileRoutesByFullPath {
   '/image-gen': typeof ImageGenRoute
   '/realtime': typeof RealtimeRoute
   '/api/image-gen': typeof ApiImageGenRoute
+  '/api/structured-output': typeof ApiStructuredOutputRoute
   '/api/summarize': typeof ApiSummarizeRoute
   '/api/tanchat': typeof ApiTanchatRoute
   '/api/transcribe': typeof ApiTranscribeRoute
   '/generations/image': typeof GenerationsImageRoute
   '/generations/speech': typeof GenerationsSpeechRoute
+  '/generations/structured-output': typeof GenerationsStructuredOutputRoute
   '/generations/summarize': typeof GenerationsSummarizeRoute
   '/generations/transcription': typeof GenerationsTranscriptionRoute
   '/generations/video': typeof GenerationsVideoRoute
@@ -138,11 +153,13 @@ export interface FileRoutesByTo {
   '/image-gen': typeof ImageGenRoute
   '/realtime': typeof RealtimeRoute
   '/api/image-gen': typeof ApiImageGenRoute
+  '/api/structured-output': typeof ApiStructuredOutputRoute
   '/api/summarize': typeof ApiSummarizeRoute
   '/api/tanchat': typeof ApiTanchatRoute
   '/api/transcribe': typeof ApiTranscribeRoute
   '/generations/image': typeof GenerationsImageRoute
   '/generations/speech': typeof GenerationsSpeechRoute
+  '/generations/structured-output': typeof GenerationsStructuredOutputRoute
   '/generations/summarize': typeof GenerationsSummarizeRoute
   '/generations/transcription': typeof GenerationsTranscriptionRoute
   '/generations/video': typeof GenerationsVideoRoute
@@ -158,11 +175,13 @@ export interface FileRoutesById {
   '/image-gen': typeof ImageGenRoute
   '/realtime': typeof RealtimeRoute
   '/api/image-gen': typeof ApiImageGenRoute
+  '/api/structured-output': typeof ApiStructuredOutputRoute
   '/api/summarize': typeof ApiSummarizeRoute
   '/api/tanchat': typeof ApiTanchatRoute
   '/api/transcribe': typeof ApiTranscribeRoute
   '/generations/image': typeof GenerationsImageRoute
   '/generations/speech': typeof GenerationsSpeechRoute
+  '/generations/structured-output': typeof GenerationsStructuredOutputRoute
   '/generations/summarize': typeof GenerationsSummarizeRoute
   '/generations/transcription': typeof GenerationsTranscriptionRoute
   '/generations/video': typeof GenerationsVideoRoute
@@ -179,11 +198,13 @@ export interface FileRouteTypes {
     | '/image-gen'
     | '/realtime'
     | '/api/image-gen'
+    | '/api/structured-output'
     | '/api/summarize'
     | '/api/tanchat'
     | '/api/transcribe'
     | '/generations/image'
     | '/generations/speech'
+    | '/generations/structured-output'
     | '/generations/summarize'
     | '/generations/transcription'
     | '/generations/video'
@@ -198,11 +219,13 @@ export interface FileRouteTypes {
     | '/image-gen'
     | '/realtime'
     | '/api/image-gen'
+    | '/api/structured-output'
     | '/api/summarize'
     | '/api/tanchat'
     | '/api/transcribe'
     | '/generations/image'
     | '/generations/speech'
+    | '/generations/structured-output'
     | '/generations/summarize'
     | '/generations/transcription'
     | '/generations/video'
@@ -217,11 +240,13 @@ export interface FileRouteTypes {
     | '/image-gen'
     | '/realtime'
     | '/api/image-gen'
+    | '/api/structured-output'
     | '/api/summarize'
     | '/api/tanchat'
     | '/api/transcribe'
     | '/generations/image'
     | '/generations/speech'
+    | '/generations/structured-output'
     | '/generations/summarize'
     | '/generations/transcription'
     | '/generations/video'
@@ -237,11 +262,13 @@ export interface RootRouteChildren {
   ImageGenRoute: typeof ImageGenRoute
   RealtimeRoute: typeof RealtimeRoute
   ApiImageGenRoute: typeof ApiImageGenRoute
+  ApiStructuredOutputRoute: typeof ApiStructuredOutputRoute
   ApiSummarizeRoute: typeof ApiSummarizeRoute
   ApiTanchatRoute: typeof ApiTanchatRoute
   ApiTranscribeRoute: typeof ApiTranscribeRoute
   GenerationsImageRoute: typeof GenerationsImageRoute
   GenerationsSpeechRoute: typeof GenerationsSpeechRoute
+  GenerationsStructuredOutputRoute: typeof GenerationsStructuredOutputRoute
   GenerationsSummarizeRoute: typeof GenerationsSummarizeRoute
   GenerationsTranscriptionRoute: typeof GenerationsTranscriptionRoute
   GenerationsVideoRoute: typeof GenerationsVideoRoute
@@ -296,6 +323,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof GenerationsSummarizeRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/generations/structured-output': {
+      id: '/generations/structured-output'
+      path: '/generations/structured-output'
+      fullPath: '/generations/structured-output'
+      preLoaderRoute: typeof GenerationsStructuredOutputRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/generations/speech': {
       id: '/generations/speech'
       path: '/generations/speech'
@@ -331,6 +365,13 @@ declare module '@tanstack/react-router' {
       preLoaderRoute: typeof ApiSummarizeRouteImport
       parentRoute: typeof rootRouteImport
     }
+    '/api/structured-output': {
+      id: '/api/structured-output'
+      path: '/api/structured-output'
+      fullPath: '/api/structured-output'
+      preLoaderRoute: typeof ApiStructuredOutputRouteImport
+      parentRoute: typeof rootRouteImport
+    }
     '/api/image-gen': {
       id: '/api/image-gen'
       path: '/api/image-gen'
@@ -381,11 +422,13 @@ const rootRouteChildren: RootRouteChildren = {
   ImageGenRoute: ImageGenRoute,
   RealtimeRoute: RealtimeRoute,
   ApiImageGenRoute: ApiImageGenRoute,
+  ApiStructuredOutputRoute: ApiStructuredOutputRoute,
   ApiSummarizeRoute: ApiSummarizeRoute,
   ApiTanchatRoute: ApiTanchatRoute,
   ApiTranscribeRoute: ApiTranscribeRoute,
   GenerationsImageRoute: GenerationsImageRoute,
   GenerationsSpeechRoute: GenerationsSpeechRoute,
+  GenerationsStructuredOutputRoute: GenerationsStructuredOutputRoute,
   GenerationsSummarizeRoute: GenerationsSummarizeRoute,
   GenerationsTranscriptionRoute: GenerationsTranscriptionRoute,
   GenerationsVideoRoute: GenerationsVideoRoute,

examples/ts-react-chat/src/routes/api.structured-output.ts

@@ -0,0 +1,58 @@
+import { createFileRoute } from '@tanstack/react-router'
+import { chat } from '@tanstack/ai'
+import { openRouterText } from '@tanstack/ai-openrouter'
+import { z } from 'zod'
+
+const GuitarRecommendationSchema = z.object({
+  title: z.string().describe('Short headline for the recommendation'),
+  summary: z.string().describe('One paragraph summary'),
+  recommendations: z
+    .array(
+      z.object({
+        name: z.string(),
+        brand: z.string(),
+        type: z.enum(['acoustic', 'electric', 'bass', 'classical']),
+        priceRangeUsd: z.object({ min: z.number(), max: z.number() }),
+        reason: z.string(),
+      }),
+    )
+    .min(1)
+    .describe('Guitar recommendations with reasons'),
+  nextSteps: z.array(z.string()).describe('Practical follow-up actions'),
+})
+
+export const Route = createFileRoute('/api/structured-output')({
+  server: {
+    handlers: {
+      POST: async ({ request }) => {
+        const body = await request.json()
+        const { prompt, model } = body as {
+          prompt: string
+          model?: string
+        }
+
+        try {
+          const result = await chat({
+            adapter: openRouterText(
+              (model || 'openai/gpt-5.2') as 'openai/gpt-5.2',
+            ),
+            messages: [{ role: 'user', content: prompt }],
+            outputSchema: GuitarRecommendationSchema,
+          })
+
+          return new Response(JSON.stringify({ data: result }), {
+            headers: { 'Content-Type': 'application/json' },
+          })
+        } catch (error: unknown) {
+          const message =
+            error instanceof Error ? error.message : 'An error occurred'
+          console.error('[api/structured-output] Error:', error)
+          return new Response(JSON.stringify({ error: message }), {
+            status: 500,
+            headers: { 'Content-Type': 'application/json' },
+          })
+        }
+      },
+    },
+  },
+})

examples/ts-react-chat/src/routes/api.tanchat.ts

@@ -11,8 +11,8 @@ import { anthropicText } from '@tanstack/ai-anthropic'
 import { geminiText } from '@tanstack/ai-gemini'
 import { openRouterText } from '@tanstack/ai-openrouter'
 import { grokText } from '@tanstack/ai-grok'
-import type { AnyTextAdapter, ChatMiddleware } from '@tanstack/ai'
 import { groqText } from '@tanstack/ai-groq'
+import type { AnyTextAdapter, ChatMiddleware } from '@tanstack/ai'
 import {
   addToCartToolDef,
   addToWishListToolDef,
@@ -146,8 +146,6 @@ export const Route = createFileRoute('/api/tanchat')({
             createChatOptions({
               adapter: openRouterText('openai/gpt-5.1'),
               modelOptions: {
-                models: ['openai/chatgpt-4o-latest'],
-                route: 'fallback',
                 reasoning: {
                   effort: 'medium',
                 },