Bifrost is an AI gateway designed to provide a unified interface for accessing multiple AI providers, including OpenAI, Anthropic, AWS Bedrock, and Google Vertex. It aims to simplify the integration of AI models into applications by offering a single OpenAI-compatible API.

The primary problem Bifrost solves is the complexity and fragmentation of AI provider APIs. Developers often need to manage multiple APIs and handle failovers manually. Bifrost provides automatic failover, load balancing, and semantic caching to reduce costs and latency.

The software is used by developers and AI teams who need a reliable and efficient way to integrate AI models into their applications. It is particularly useful for teams running production AI systems at scale.

Bifrost works by acting as a middleware between the client applications and the various AI provider APIs. It routes requests to the appropriate provider, handles failovers, and provides additional features like semantic caching and observability.

Notable patterns include the use of Go for performance-critical components and TypeScript for the web interface. The project also uses a modular architecture with separate packages for core functionality, plugins, and transports.