OPEN SOURCE · Routing infrastructure for agents

The AI router agents trust.

One open-source API for OpenAI, Anthropic, Gemini, and xAI models: smart routing, automatic failover, and token accounting your agents need.

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  • 4 Providers
  • Live Model catalog
  • 38ms P50 routing

What Lazu ships

  • Smart routing
  • Per-agent budgets
  • Tool calling
  • Async jobs
  • OTLP traces

Models behind one API

  • OpenAI GPT-5
  • Anthropic Claude 4.5
  • Google Gemini 2.5
  • xAI Grok 4