Open-source AI gateway and LLM proxy that routes to 140+ providers and 1,800+ models through a single OpenAI-compatible API with spend controls.
LiteLLM is a self-hosted, open-source AI gateway for platform teams that unifies access to 140+ LLM providers and 1,800+ models behind one OpenAI-compatible API and a single SSO login. It provides per-key, per-user, and per-team spend tracking with hard budget caps, auto-routing to the lowest-cost suitable model, and semantic caching with Redis or S3. The gateway adds 0.66ms overhead at p99 and deploys via an official Helm chart or Terraform module in air-gapped environments. Enterprise tiers add RBAC, audit logs, and support on top of the MIT-licensed open-source core. LiteLLM is a product of LiteLLM.
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