AnyResponses – Unified Open Responses-compatible gateway for multiple LLM providers

Summary: AnyResponses provides a single Open Responses-compatible API to access over 20 LLM providers including OpenAI, Anthropic, and Gemini. It offers a hosted gateway or BYOK options to switch models by ID while maintaining consistent response formats across SDK and HTTP interfaces, simplifying multi-provider integration.

What it does

AnyResponses acts as a compatibility layer and routing gateway that standardizes the OpenAI Responses API interface across multiple LLM providers. It enables switching between models with minimal application changes and supports hosted or self-managed key control.

Who it's for

It is designed for development teams and organizations needing to experiment with or deploy multiple LLM providers without rewriting integration code for each.

Why it matters

AnyResponses reduces integration complexity and vendor lock-in by providing a consistent API and response shape, accelerating experimentation and simplifying production maintenance across diverse LLM services.