GPT-OSS
OpenAI · 2 tracked releases · August 5, 2025 – August 5, 2025
At a glance
| Releases tracked | 2 |
|---|---|
| First tracked | August 5, 2025 — gpt-oss-120b |
| Latest | August 5, 2025 — gpt-oss-20b |
| Span | 0 days |
| Weights | Open throughout |
| Record quality | 2 of 2 verified · how this is judged |
Release cadence
One tile per tracked release, placed in the month it shipped, so the pauses in this line are the pauses in the data. Years with nothing tracked keep their row.
Lineage
Ordered by announcement date, and spaced by the gap between releases, so a quiet year looks like one. Lineage is not inferred from version numbers — labs do not number consistently, so the dates decide the order.
-
2 released the same day
gpt-oss-120bagenticcodingfunction callingreasoningtool use
Context window over time
Only releases with a disclosed context window appear.
Compare the two most recent side by side →
All releases from OpenAI →