AI Gateway supports OpenAI's Responses API
OpenAI's Responses API is now live on AI Gateway. Developers can now route requests directly without rebuilding integrations.
Why it matters
AI Gateway expands its routing capabilities to support OpenAI's modern Responses API, simplifying developer workflows for teams building multi-model applications. This reduces friction for teams migrating from Chat Completions while maintaining backward compatibility.
The key facts
11 to knowOpenAI Responses API now available through Vercel's AI Gateway
Supports TypeScript and Python SDKs
Enables direct routing via base URL configuration
Functionality includes text generation, streaming, tool calling, structured output with JSON schema, and configurable reasoning levels
Feature consolidates existing Chat Completions API capabilities under new API surface
OpenAI Responses API now available via AI Gateway
Feature parity with Chat Completions API through AI Gateway
Enables structured output with JSON schema + reasoning levels
Tool calling and token streaming supported
Published by Vercel (AI Gateway provider)
March 6, 2026
Go to the source
Vercel Blogvercel.com
Publisher excerpt: OpenAI's Responses API is now available through AI Gateway. The Responses API is a modern alternative to the Chat Completions API. Point your OpenAI SDK to AI Gateway's base URL and use the names to route requests. TypeScript and Python are both supported. All of the functionality in the Responses…