# AIRouter

> OpenAI-compatible LLM API for developers, AI agents and coding tools, with RUB balance and public setup instructions.

Canonical site: https://ai-router.app/
API base URL: https://ai-router.app/api/v1
OpenAPI schema: https://ai-router.app/openapi.json
Full LLM guide: https://ai-router.app/llms-full.txt

## What AIRouter is

AIRouter provides an OpenAI-compatible Chat Completions API for SDKs, backend services, automation workflows and coding agents that support a custom base URL. Users create an AIRouter API key, top up balance in rubles, choose a model id from the catalog and send requests to the AIRouter API.

## Best pages for users and agents

- Quickstart and API docs: https://ai-router.app/docs
- OpenAI-compatible API with RUB balance: https://ai-router.app/docs/openai-api-rub
- LLM API in Russia for developers: https://ai-router.app/docs/llm-api-russia
- Models and RUB prices: https://ai-router.app/pricing
- AI agent and coding tool instructions: https://ai-router.app/docs/agents
- FAQ: https://ai-router.app/faq

## Supported setup instructions

- Cline: https://ai-router.app/docs/agents/cline
- Continue.dev: https://ai-router.app/docs/agents/continue
- OpenCode: https://ai-router.app/docs/agents/opencode
- Hermes Agent: https://ai-router.app/docs/agents/hermes
- OpenClaw: https://ai-router.app/docs/agents/openclaw
- Roo Code: https://ai-router.app/docs/agents/roo-code
- Kilo Code: https://ai-router.app/docs/agents/kilo-code
- LangChain: https://ai-router.app/docs/agents/langchain
- Vercel AI SDK: https://ai-router.app/docs/agents/vercel-ai-sdk
- LiteLLM: https://ai-router.app/docs/agents/litellm
- n8n via HTTP Request: https://ai-router.app/docs/agents/n8n
- Claude Code native /v1/messages setup with ANTHROPIC_BASE_URL plus Sonnet/Haiku AIRouter catalog ids: https://ai-router.app/docs/agents/claude-code

Compatibility note: direct AIRouter setup is documented for clients with explicit OpenAI-compatible or custom provider settings. Other clients should be checked against their official configuration options before use.

## Core API

- `GET /api/v1/models`: public model catalog.
- `POST /api/v1/chat/completions`: OpenAI-compatible Chat Completions. Auth: `Authorization: Bearer $AIROUTER_API_KEY`.
- `POST /v1/messages`: Anthropic-native Messages endpoint for Claude Code-style clients. Auth: Bearer or `X-Api-Key`; Claude Code env should use root `ANTHROPIC_BASE_URL`, `ANTHROPIC_MODEL=sonnet`, `ANTHROPIC_DEFAULT_SONNET_MODEL=anthropic/claude-sonnet-4.5`, and `ANTHROPIC_DEFAULT_HAIKU_MODEL=anthropic/claude-haiku-4.5` when those AIRouter catalog ids are active.

Use examples with placeholders only: `<AIROUTER_API_KEY>` and `<AIROUTER_MODEL>`.