Atlas / Open-weight and challenger labs / gpt-oss
gpt-oss
AI Market Atlas · by Pro Pluribus
OpenAI
OpenAI's only open-weight models, now a year old.
What it offers
Main offerings
- gpt-oss-120b / 20b
- Apache 2.0 reasoning models for local and on-prem use.
Recent news
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Compiled from public sources by Pro Pluribus; updated 16 Oct 2026. General information, not advice. Company names and logos belong to their owners and are used to identify them, without affiliation or endorsement. Terms