OpenRouter

OpenRouter.ai is a unified API platform that gives developers and applications access to over 400 large language models (LLMs) and AI models from more than 60 providers through a single, standardized interface. Instead of managing separate API keys, billing accounts, and endpoints for each provider (like OpenAI, Anthropic, Meta, Mistral, Deepseek, and many others), OpenRouter lets users connect once and route requests to the best model for each task, with consolidated billing and usage tracking. This makes it easy to experiment with different models, compare performance and cost, and build resilient, multi‑model workflows without the complexity of juggling multiple integrations.​ The platform is designed to be familiar to developers who already use OpenAI’s Chat Completions API: by simply changing the endpoint URL and API key, existing code can start using OpenRouter’s wide model catalog while keeping the same request/response format. OpenRouter supports text and image inputs, streaming responses, tool/function calling, and long‑context models, so it can power chatbots, agents, content generation, and complex reasoning pipelines. It also provides automatic fallback routing, so if one provider is down or slow, requests can be redirected to a backup model, improving reliability for production systems.​ OpenRouter is used by developers, startups, and teams who want to optimize AI costs, avoid vendor lock‑in, and match the right model to each use case (for example, using a fast, cheap model for simple tasks and a powerful one for complex reasoning or coding). With transparent pricing, real‑time monitoring, and integrations into workflow tools like Make.com and n8n, OpenRouter simplifies building and scaling AI‑powered applications across a diverse, ever‑expanding ecosystem of models.