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Best LiteLLM alternatives

3 tools developers use instead of LiteLLM, ranked by popularity. 3 offer a free plan and 1 is open source. Updated October 2026.

Free Open source Showing 1–3 of 3
  1. OpenRouter logo

    OpenRouter

    Free plan

    Unified API and marketplace for LLMs, routing requests to the best available provider for a given model and handling failover automatically across dozens of providers.

  2. Helicone logo

    Helicone

    Free plan Open source

    Open-source LLM observability proxy that sits between your app and a model provider, logging requests, costs, and latency with a one-line integration change.

  3. Portkey logo

    Portkey

    Free plan

    AI gateway for production LLM apps, combining provider routing and failover with caching, guardrails, and observability in one managed layer.