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OpenRouter Quickstart Guide | Developer Documentation

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OpenRouter provides a unified API that gives you access to hundreds of AI models through a single endpoint, while automatically handling fallbacks and selecting the most cost-effective options. Get started with just a few lines of code using your preferred SDK or framework. Want to chat with our docs? Download an LLM-friendly text file of our full documentation and include it in your system prompt. In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards. The API also supports streaming. For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation. Frequently Asked Questions Common questions about OpenRouter

> For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://openrouter.ai/docs/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://openrouter.ai/docs/_mcp/server. # Quickstart OpenRouter provides a unified API that gives you access to hundreds of AI models through a single endpoint, while automatically handling fallbacks and selecting the most cost-effective options. There are three ways to integrate with OpenRouter, depending on how much control you want: | Approach | Best for | | ---------

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