OpenRouter

Popular

OpenRouter is the most popular unified API gateway for LLMs. With a single API key, developers can access 200+ models from OpenAI, Anthropic, Google, Meta, DeepSeek, and many more. Features include automatic fallbacks, rate limiting, usage analytics, and standardized pricing across all models.

Official Website Documentation

Endpoints

POST

Chat Completions

/api/v1/chat/completions

Unified chat completions API for 200+ models.

Streaming

Vision

Function Calling

Models

openai/gpt-4oanthropic/claude-sonnet-4-6google/gemini-2.5-flashdeepseek/deepseek-chatmeta-llama/llama-4-maverick

Pricing

Model	Input Price	Output Price	Context Window
Various models (pass-through + fee)	Free	Free	200.0K

Capabilities

Streaming

Function Calling

Tool Use

Vision

JSON Mode

Image Input

Long Context

Reasoning

Try it in Playground

Test OpenRouter APIs directly in our interactive playground with your own API key.

Try it in Playground

OpenRouter

Endpoints

Chat Completions

Capabilities

Try it in Playground

Overview

OpenRouter

Endpoints

Chat Completions

Capabilities

Try it in Playground

Overview