LiteLLM
Open-source LLM gateway and Python SDK that unifies 100+ providers behind an OpenAI-compatible API with cost tracking, budgets, rate limits, and fallbacks.
At a Glance
Get started with LiteLLM at no cost
Engagement
Available On
Alternatives
Updated Feb 2026
About LiteLLM
LiteLLM is an open-source LLM gateway (proxy server) and Python SDK that lets teams call 100+ model providers through the OpenAI API format. It adds platform features—load-balancing and fallbacks, spend tracking per key/user/team, budgets and RPM/TPM limits, virtual keys, and an admin UI. It integrates with observability stacks (Langfuse, LangSmith, OpenTelemetry, Prometheus) and supports logging to S3/GCS. Enterprise options layer on SSO/JWT auth and audit logs, plus fine-grained guardrails per project.
Community Discussions
Be the first to start a conversation about LiteLLM
Share your experience with LiteLLM, ask questions, or help others learn from your insights.
Pricing
Open Source
Get started with LiteLLM at no cost with 100+ provider integrations and OpenAI-compatible endpoints.
- 100+ provider integrations
- OpenAI-compatible endpoints
- Virtual keys, teams, budgets
- Rate limits, load balancing, guardrails
- Observability integrations (Langfuse, LangSmith, OTEL, Prometheus)
Enterprise (Cloud or Self-Hosted)
Enterprise-grade solution with Everything in OSS and Enterprise support & custom SLAs and dedicated support.
- Everything in OSS
- Enterprise support & custom SLAs
- JWT/SSO, audit logs, advanced guardrails
- Usage-based pricing; contact sales
Capabilities
Key Features
- OpenAI-compatible API across 100+ LLM providers
- Proxy (LLM Gateway) with routing, load balancing, and fallbacks
- Python SDK for direct calls and streaming
- Cost tracking and spend attribution per key/user/team/org
- Budgets and rate limiting (RPM/TPM)
- Virtual keys, teams, and role/permission controls
- Admin UI for keys, models, teams, and budgets
- Observability: Langfuse, LangSmith, OpenTelemetry, Prometheus
- Audit logs, SSO/JWT auth (Enterprise)
- Guardrails and moderation integrations; per-project guardrails
- Batch API, caching, prompt formatting for HF models
- S3/GCS logging of requests and costs
Integrations
Demo Video
