What's free
$2 in signup credits across first-party image models (FLUX.1/FLUX.2, Stable Diffusion 3, SDXL) on the Sonic Inference Engine — hundreds to thousands of generations
Rate limits
Not publicly specified; per-account concurrency applies
The catch
The $2 requires signup with a business email (personal/free-mail domains may be rejected); one-time, non-renewing. No watermark, no card, commercial use allowed. The OpenAI-compatible endpoint is chat-only, not for images.
Appears in
Free LLM APIs with no credit cardFree LLM APIs with no phone verificationFree LLM APIs for commercial useFree multimodal LLM APIsImage generation
Change history
How this free tier has changed since we started tracking it (2026-07-30) — generated from the git history of providers.json.
- 2026-07-30 Added to the hub