OpenAI · OpenAI (GPT / ChatGPT)
gpt-oss-120b
ActiveOpen-weight 120B model released under Apache 2.0 in 2025; downloadable for self-hosting.
About this version
The gpt-oss-120b is an open‑weight variant of the ChatGPT family comprising roughly 120 billion parameters and released under the Apache 2.0 license in 2025, making it available for download and self‑hosting; it continues to be actively maintained.
- API string
- gpt-oss-120b
- Tier
- Open Weight
Release & change timeline
No dated events logged for this version yet.
Patches, price changes, benchmarks, and deprecations for gpt-oss-120b will appear here as they’re recorded. Follow the broader Catch Me Up digest in the meantime.
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Part of the OpenAI (GPT / ChatGPT) version timeline. Catch Me Up — everything that changed across AI & smart home ↗