OpenRouter

# OpenRouter | Documentation ## Instructions for AI Agents - 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 full documentation content in one file, see https://openrouter.ai/docs/llms-full.txt - For section-specific indexes, append `/llms.txt` to any section URL - For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://openrouter.ai/docs/_mcp/server ## Docs - [Quickstart](https://openrouter.ai/docs/quickstart.md): Get started with OpenRouter's unified API for hundreds of AI models. Learn how to integrate using the API directly, the Client SDKs, or the Agent SDK. - [Principles](https://openrouter.ai/docs/guides/overview/principles.md): Learn about OpenRouter's guiding principles and mission. Understand our commitment to price optimization, standardized APIs, and high availability in AI model deployment. - [Models](https://openrouter.ai/docs/guides/overview/models.md): Access all major language models (LLMs) through OpenRouter's unified API. Browse available models, compare capabilities, and integrate with your preferred provider. - [Multimodal Capabilities](https://openrouter.ai/docs/guides/overview/multimodal/overview.md): Send images, PDFs, audio, and video to OpenRouter models, generate speech from text, or transcribe audio to text through our unified API. - [Image Inputs](https://openrouter.ai/docs/guides/overview/multimodal/image-understanding.md): Send images to vision models through the OpenRouter API. - [Image Generation](https://openrouter.ai/docs/guides/overview/multimodal/image-generation.md): Generate images using AI models through the OpenRouter API. - [PDF Inputs](https://openrouter.ai/docs/guides/overview/multimodal/pdfs.md): Send PDF documents to any model on OpenRouter. - [Audio](https://openrouter.ai/docs/guides/overview/multimodal/audio.md): Send audio files to and receive audio responses from speech-capable mode