awesome-free-llm-apis

Why we included this project

If you're prototyping an agent or running a small team on a tight budget, this list is a handy starting point for calling real LLM APIs without paying. It rounds up providers that keep a permanent free tier for text inference, covering both the companies that train the models and the hosts that serve them. Each entry spells out the base URL, the models on offer, context and output limits, and the actual rate limits, so you can quickly see whether a free key will hold up under your workload. It also calls out the fine print, like free-tier prompts being used for training or non-commercial restrictions, which saves you from discovering those surprises after you've built on top of an API. Since every endpoint is OpenAI SDK-compatible unless noted, the collection doubles as a quick reference for wiring several free providers into existing code with minimal changes.