# FastRouter > Source: > Published: 2026-10-31 10:04:39+00:00 # FastRouter FastRouter is a unified AI gateway that routes each request to a suitable model through one OpenAI-compatible endpoint, with failover and governance. ## Overview ## FastRouter FastRouter is an [AI](https://tooldirectory.ai/glossary/ai) gateway and control plane for teams building on more than one model. FastRouter exposes a single OpenAI-compatible endpoint, routes each request to a model chosen for cost, [latency](https://tooldirectory.ai/glossary/latency) or quality, and adds the operational layer around it: failover when a provider degrades, observability over what was sent where, and governance controls for teams. It documents integrations with the [agent](https://tooldirectory.ai/glossary/agent) frameworks people actually use, including LangGraph, CrewAI, AutoGen, Agno, Pydantic AI and the OpenAI Agents SDK. **Production credibility:** FastRouter publishes developer documentation at docs.fastrouter.ai and maintains a GitHub organisation, and its listing describes coverage across providers including OpenAI, Anthropic, Google, Meta, xAI and Cohere. It is an early product and its own surfaces disagree on scale — the Product Hunt listing says 200-plus models, the documentation says 160-plus across 20-plus providers, and the GitHub page says 100-plus — so treat any single figure as approximate and check the current site before relying on it. ### Key Features - One OpenAI-compatible endpoint across many providers - Routing by cost, latency or quality rather than a fixed model - Failover when a provider degrades or errors - Observability over requests, spend and model selection - Governance controls for team and enterprise use - Documented integrations with LangGraph, CrewAI, AutoGen and the OpenAI Agents SDK ### Ideal Use Case Teams whose costs are dominated by [inference](https://tooldirectory.ai/glossary/inference) and who would rather not rewrite integrations each time a cheaper or better model appears. The agent-framework integrations make it a practical drop-in for an existing agent stack, and the failover matters most for production traffic that cannot wait out a provider incident. ### How FastRouter differentiates OpenRouter is the incumbent aggregator and Portkey the enterprise-flavoured gateway; Not Diamond focuses on picking the right model per prompt. FastRouter combines routing with the control-plane features, which is the same ground Portkey occupies — so the comparison comes down to maturity and price rather than concept. It is the newest option here, and the inconsistent model counts across its own channels are a fair signal of its stage. ### FAQ **Q: What is FastRouter?** A: FastRouter is a unified AI gateway. It routes requests across many large language models through one OpenAI-compatible endpoint, with failover, observability and governance. **Q: How many models does FastRouter support?** A: Its own surfaces give different figures — 100-plus, 160-plus and 200-plus across 20-plus providers — so check the current site. Coverage includes OpenAI, Anthropic, Google, Meta, xAI and Cohere. **Q: Does FastRouter work with agent frameworks?** A: Yes. Its documentation lists LangGraph, CrewAI, AutoGen, Agno, Pydantic AI and the OpenAI Agents SDK among supported frameworks. **Q: How is FastRouter priced?** A: Usage-based on the [tokens](https://tooldirectory.ai/glossary/tokens) routed through the gateway, with the underlying model costs passed through. **Q: How does FastRouter compare to OpenRouter?** A: Both aggregate many models behind one endpoint. FastRouter emphasises the control plane around routing — failover, observability and governance — and is a considerably newer product. ### tl;dr FastRouter is an AI gateway routing requests across many models through one OpenAI-compatible endpoint, with failover, observability and governance, plus documented agent-framework integrations. Early-stage: its own channels quote different model counts. ## Key Features ## Why Use FastRouter ## User Reviews ## Similar Tools [AI InfrastructureOpenRouterUnified API and marketplace for the best LLMs at the best prices for any prompt.Freemium★ 4.84♥ 360](https://tooldirectory.ai/tools/open-router) [LLM Gateways & ServingPortkeyPortkey is a unified AI gateway and LLMOps control plane that routes, observes, governs, and secures LLM traffic across 1,600+ models via one API.Freemium★ 4.84♥ 285](https://tooldirectory.ai/tools/portkey) [LLM Gateways & ServingNot DiamondNot Diamond is a model routing layer that selects the right LLM for each query to raise quality and cut costs.Paid★ 4.84♥ 245](https://tooldirectory.ai/tools/not-diamond) [Developer ToolsTOGETHERCloud service for developers to build with open-source AI, offering APIs, distributed training systems, and leading open-source models.Paid★ 4.93♥ 441](https://tooldirectory.ai/tools/together-ai-open-source-development-platform) [Developer ToolsHeliconeHelicone: Open-source monitoring for generative AI applications.Paid★ 4.75♥ 225](https://tooldirectory.ai/tools/helicone-ai-monitoring)