Bifrost is listed as Open Source. Check https://github.com/maximhq/bifrost for the current plan limits, as vendors change pricing frequently.

What is Bifrost best for?

Bifrost is commonly used for LLM gateway, Failover and routing, Cost governance. It supports English.

Bifrost

Q: What is Bifrost?

Bifrost is a code AI tool listed on Use AI Tools. Bifrost is an open-source, high-performance AI gateway that works as an LLM gateway, an MCP gateway and an agent gateway. It puts 23 or more providers behind one OpenAI-compatible API with automatic failover, load balancing, semantic caching, virtual keys, budgets and MCP code mode, and reports under 200 microseconds of overhead at 5k RPS.

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LLM gatewayFailover and routingCost governance

Open SourceEnglish

Bifrost is an open-source, high-performance AI gateway that works as an LLM gateway, an MCP gateway and an agent gateway. It puts 23 or more providers behind one OpenAI-compatible API with automatic failover, load balancing, semantic caching, virtual keys, budgets and MCP code mode, and reports under 200 microseconds of overhead at 5k RPS.

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🎯 Real-World Use Cases

Front several providers with one endpoint

OpenAI, Anthropic, AWS Bedrock, Google Vertex and more sit behind a single API your SDKs already speak.

Survive a provider going down

Automatic failover and load balancing are part of the gateway rather than your application code.

Put budgets on keys

Virtual keys, budgets and semantic caching let you govern spend per team.

⚖️ Honest Review

✅ Pros

+One OpenAI-compatible API across many providers
+Failover, load balancing and semantic caching built in
+Single Go binary with a claimed sub-200 microsecond overhead

⚠️ Cons

−Another service to deploy, monitor and keep available
−Its performance figures are the project's own measurements

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CodeOct 22, 2026