# Martian > Martian operates the Martian Gateway, a unified LLM API providing access to 200+ AI models from leading providers (OpenAI, Anthropic, and others) through a single OpenAI- and Anthropic-compatible endpoint. Point the standard OpenAI or Anthropic SDK at https://api.withmartian.com/v1, authenticate with a bearer API key, and address models as provider/model-name. Martian is also an AI interpretability research lab publishing open-source frameworks (ARES, K-Steering, RouterBench) and a model-router / judges SDK. ## APIs - [Martian Gateway API](https://docs.withmartian.com/gateway): base URL https://api.withmartian.com/v1. Operations: POST /v1/chat/completions (OpenAI-compatible), POST /v1/messages (Anthropic-compatible), GET /v1/models (List Models). ## Docs - [Documentation](https://docs.withmartian.com) - [Quickstart](https://docs.withmartian.com/quickstart) - [API Reference](https://docs.withmartian.com/api-reference) - [Authentication](https://docs.withmartian.com/api-reference/authentication) - [Endpoints](https://docs.withmartian.com/api-reference/endpoints) - [Available Models](https://docs.withmartian.com/api-reference/models) - [Errors](https://docs.withmartian.com/api-reference/errors) - [Integrations](https://docs.withmartian.com/integrations) ## SDKs - [martian-python (PyPI)](https://pypi.org/project/martian-python/): Python client library for the Martian API. - [martian-node (npm)](https://www.npmjs.com/package/martian-node): Node.js library for the Martian API. - [martian-sdk-python (GitHub)](https://github.com/withmartian/martian-sdk-python): SDK to manage judges and routers. - OpenAI and Anthropic SDKs work directly against the Gateway base URL. ## Resources - [Dashboard / Sign up](https://app.withmartian.com/) - [Status](https://status.withmartian.com) - [Blog](https://withmartian.com/blog) - [GitHub](https://github.com/withmartian) ## Enrichment artifacts - [Packages](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/packages/martian-packages.yml) - [Authentication](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/authentication/martian-authentication.yml) - [Conventions](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/conventions/martian-conventions.yml) - [Error codes](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/errors/martian-error-codes.yml) - [Lifecycle](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/lifecycle/martian-lifecycle.yml) - [Conformance](https://raw.githubusercontent.com/api-evangelist/martian/refs/heads/main/conformance/martian-conformance.yml)