OpenAI · Official · Blog Article
gpt-oss-120b & gpt-oss-20b Model Card
Summary
We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.
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Where the other five stand
Related: Google: Context Rot: How Increasing Input Tokens Impacts LLM Performance (Paper Analysis) · Anthropic: Context Rot: How Increasing Input Tokens Impacts LLM Performance (Paper Analysis) · Meta: Introducing DINOv3: Self-supervised learning for vision at unprecedented scale
Hype check
2/5Worth a look
Rated low: routine. Worth knowing, not worth rearranging your day for.
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Questions people ask
- Where can I read the full story?
- On OpenAI News. The "Read this on OpenAI News" link above opens the original in a new tab. Subvolts publishes a summary and analysis, never the full piece.
- What does this mean for ChatGPT?
- We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.
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Page generated Sep 3, 2026. Summaries are Subvolts' own; the story belongs to OpenAI News.