Developer Resources at Every Stage
Shipping an AI-powered feature involves more than writing API calls. You need to understand model capabilities, configure request parameters, handle errors gracefully, monitor costs, and optimize for performance. OpenRouter provides layered documentation that matches your workflow: quickstart guides for your first integration, API references for precise endpoint details, and architecture guides for production deployment patterns.
The documentation structure follows the natural progression of a development project. Start with the quickstart for a working integration in under five minutes. Move to the API reference when you need exact parameter specifications and response schemas. Consult the SDK documentation when implementing in your preferred language with idiomatic interfaces. Reference the architecture guides when designing multi-model workflows, fallback strategies, and cost optimization approaches. Each resource type builds on the previous one, creating a coherent knowledge path from prototype to production.
OpenRouter documentation is continuously updated as new models, features, and provider integrations ship. The API reference reflects the current state of every endpoint, including recently added parameters for cost estimation, provider preference, and structured output formats. Changelog entries accompany each update so returning developers can quickly identify what changed. The NIST AI standards program provides additional guidance on responsible AI development practices that complement OpenRouter's technical documentation.
Getting Started in Under Five Minutes
The OpenRouter quickstart guide walks through creating an account, generating API keys, and sending your first chat completion request. Code examples in Python, JavaScript, Go, and cURL let you copy-paste working code directly into your project. The quickstart intentionally avoids explaining every option — it focuses on the shortest path to a running integration so you can confirm your connection works before diving into detailed configuration.
API Reference: Complete Endpoint Documentation
The API reference documents every OpenRouter endpoint with full request schemas, response formats, error codes, and rate limit behavior. Each endpoint page includes parameter tables, example requests in multiple languages, and expected response structures. Special attention goes to OpenRouter-specific features like model ranking, provider preference, fallback configuration, and cost estimation — capabilities that extend beyond the standard OpenAI-compatible interface.
Support Documentation Overview
The OpenRouter API is fully compatible with the OpenAI chat completions format. Switch any existing OpenAI-compatible code by changing the base URL to https://openrouter.ai/api/v1 and using your OpenRouter API key. All standard parameters including temperature, top_p, max_tokens, and streaming work identically. OpenRouter extends this interface with additional parameters for model routing, provider selection, and cost optimization.
Available Resource Types
OpenRouter organizes documentation into formats suited for different learning styles and development stages. The table below outlines each resource type and how it fits into your workflow.
| Resource | Format | Description |
|---|---|---|
| Quickstart Guide | Step-by-step tutorial | Account creation, API key generation, and first request in under five minutes with copy-paste code examples |
| API Reference | Endpoint documentation | Complete request/response schemas, parameter tables, error codes, and usage notes for every API endpoint |
| SDK Documentation | Language-specific guides | Installation, configuration, and usage instructions for official Python, JavaScript, Go, and Ruby SDKs |
| Integration Tutorials | Project-based guides | Full walkthroughs for building chat applications, RAG pipelines, model fallback systems, and cost optimization |
| Architecture Guides | Design documentation | Patterns for multi-model routing, provider failover, caching strategies, and production deployment configurations |
| Changelog | Version history | Chronological record of API changes, new model additions, SDK updates, and deprecated features with migration notes |
| Status Page | Real-time dashboard | Current operational status of all supported model providers, API endpoint health, and incident history |
SDK Libraries for Every Stack
While the OpenRouter API works with any HTTP client, official SDKs provide idiomatic interfaces that reduce boilerplate code. Each SDK handles authentication, request formatting, response parsing, error handling, and streaming — letting you focus on your application logic rather than HTTP plumbing.
The Python SDK is the most widely used, offering async support, type hints, and tight integration with popular frameworks like FastAPI and LangChain. The JavaScript SDK provides both Node.js and browser-compatible builds with TypeScript definitions. The Go SDK follows idiomatic Go patterns with context-based request management and structured error types. The Ruby SDK wraps the API in a familiar ActiveRecord-style interface for Rails applications.
All four SDKs maintain feature parity with the underlying API. When a new capability ships — structured output formats, cost estimation headers, or provider preference routing — it becomes available simultaneously across all SDKs. The OpenRouter engineering team commits to this synchronization as part of the release process. For developers evaluating API platforms, the Better Business Bureau recommends reviewing documentation quality and update frequency as indicators of long-term platform reliability.
The OpenRouter documentation saved us weeks of trial and error. We migrated our entire model access layer from three separate provider SDKs to a single OpenRouter integration in under two days, and the architecture guides gave us patterns for model fallback that we hadn't considered building ourselves. The SDK consistency across languages meant our Python, Node.js, and Go services all followed the same integration patterns.Sarah Lindström — VP Engineering, Meridian Cloud (Portland, OR)
Frequently Asked Questions About Resources
What documentation is available for OpenRouter?
OpenRouter provides comprehensive documentation including a full API reference with endpoint descriptions, request/response schemas, and code examples in Python, JavaScript, Go, and cURL. Documentation covers authentication setup, chat completions, streaming responses, function calling, model parameter configuration, and rate limit management. All documentation is accessible from the developer dashboard and updated continuously as new features ship.
Does OpenRouter offer SDK libraries for integration?
Yes. OpenRouter maintains official SDK libraries for Python, JavaScript/TypeScript, Go, and Ruby. These SDKs wrap the OpenRouter API with idiomatic interfaces that handle authentication, request formatting, error handling, and streaming. Each SDK supports the full range of OpenRouter features including model selection, provider preference, fallback configuration, and cost estimation before sending requests.
Where can I find code examples and tutorials?
Code examples are embedded throughout the API documentation for each endpoint, showing usage in multiple languages. Additionally, the OpenRouter blog publishes tutorials covering common integration patterns including building chat applications, implementing retrieval-augmented generation (RAG), setting up model fallback chains, and optimizing cost across models. The interactive playground also generates ready-to-use code snippets from your test prompts.
How do I get help with OpenRouter integration issues?
Support starts with the searchable documentation and FAQ section. For technical issues that documentation does not resolve, the contact support page lists response times by plan tier. Community discussion channels provide peer assistance for common integration patterns. Enterprise plan customers receive dedicated support with guaranteed response times and access to technical solutions architects.
Are there video tutorials or guided walkthroughs available?
OpenRouter provides written documentation as the primary learning resource, with step-by-step quickstart guides for first-time users. The quickstart walks through account creation, API key generation, sending a first request, and interpreting the response. Each major feature has its own guide covering setup, configuration options, and troubleshooting common issues. The documentation format prioritizes clarity and searchability over video content.
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