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Open-source LLM proxy/gateway that lets you call 100+ LLM providers through one OpenAI-compatible API. Manages auth, load balancing, cost tracking, rate limits, and logging. MIT-licensed, self-hosted. Open source: free. Enterprise Basic: $250/month. Enterprise Premium: $2,500/month.
LiteLLM itself is infrastructure for managing AI models rather than an end-user AI tool. It routes your requests to 100+ AI language model providers, tracks costs per model, and handles load balancing so your app doesn't go down when one provider has issues.
LiteLLM is best for small businesses that have a developer on staff and are already building AI-powered apps using multiple AI models. The big win is that you can switch between OpenAI, Anthropic, Google, and 100+ other AI providers without rewriting your code, plus you get cost tracking built in. The catch is that this is a technical tool — if you don't have someone comfortable with self-hosting and APIs, you'll hit a wall fast.