OpenRouter

OpenRouter is a unified gateway that gives developers access to hundreds of large language models from OpenAI, Anthropic, Google, Meta, Mistral and open-source providers through a single OpenAI-compatible API key. It routes requests to the cheapest or fastest available provider, falls back automatically when one is down, and shows live pricing, latency and usage analytics in one dashboard. Builders use it to compare models, control spending and avoid locking their product into a single AI vendor.