A free, OpenAI-compatible LLM API. No credit card, no billing, no trial. Every so often a response ends with a small ASCII block from a sponsor. Forty columns, plain text, nothing to block. That is the whole business model. You never see one in an agent turn — requests with tools, structured output, or a long system prompt are exempt, so aider, Cursor and Continue behave normally. Three models. Two env vars and any OpenAI client works. Sign in with GitHub, get a key in a minute.