gpt-oss-20b: pricing, specs, and how to use it (2026)
gpt-oss-20b is an AI model from OpenAI, available alongside ChatGPT, Claude, Gemini, and 300+ other models inside Admix on one subscription from $8.99/mo.
Quick specs
| Provider | OpenAI |
| Model ID | openai/gpt-oss-20b |
| Input price | $0.03 / 1M tokens |
| Output price | $0.14 / 1M tokens |
| Tier | starter |
| Accepts images | No |
| Category | Basic |
How to use gpt-oss-20b in Admix
Open Admix, pick gpt-oss-20b from the model list, and start chatting. You can also run the same prompt through gpt-oss-20b and other frontier models like Claude, GPT-5, and Gemini side by side, then pick the best answer or spot disagreement. One subscription, no separate API key.
Compare gpt-oss-20b with other AI models
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FAQ
What is gpt-oss-20b?
gpt-oss-20b is an AI model from OpenAI, available inside Admix alongside 300+ other frontier and open-source AI models on one subscription.
How much does gpt-oss-20b cost?
gpt-oss-20b costs $0.03 per million input tokens and $0.14 per million output tokens. In Admix you use it inside one subscription starting at $8.99 per month, no separate API key required.
Can I compare gpt-oss-20b with ChatGPT, Claude, or Gemini?
Yes. Admix lets you run the same prompt through gpt-oss-20b and any of the other 300+ models in the catalog, then see the answers side by side.
Try gpt-oss-20b in Admix
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