GPT-OSS 20B is free on 7 providers today. Permanent free tiers come first, then one-time trials.
| Provider | API model ID | Context | Free limits | Sign-up |
|---|---|---|---|---|
| Groq | openai/gpt-oss-20b |
131K | 30 RPM; 8K TPM on most chat models (varies by model) | No card |
| Cloudflare Workers AI | @cf/openai/gpt-oss-20b |
128K | Varies by model | No card |
| Pollinations.ai | openai/gpt-oss-20b |
131K | API key required (anonymous access removed); no card | No card |
| Api.Airforce | gpt-oss-20b |
128K | 1 RPM | No card |
| LLM7.io | gpt-oss:20b |
128K | 1 req/s, 60/min, 250/hour (free token from dash.llm7.io) | No card |
| NVIDIA NIM | openai/gpt-oss-20b |
128K | ~40 RPM (varies per model, not published) | Phone |
| OVH AI Endpoints | gpt-oss-20b |
128K | 2 RPM per IP per model (anonymous, free); 400 RPM with a key (pay-as-you-go) | Free account |
Free lists change often. Each provider page shows its full limits and code examples, and every change is logged in the changelog. Want to call it from Claude Code or Cursor? Use the setup generator.