Family
Light
OpenAI
gpt-oss family
6 releases · Elo progression and succession lineage (D9)
Elo progression
Aug 2025
gpt-oss-120b (High)
OPEN
117B·5.1Ba
1845.2
Aug 2025
gpt-oss-120b (Low)
OPEN
117B·5.1Ba
1330.6
Aug 2025
gpt-oss-120b (Medium)
OPEN
117B·5.1Ba
1555.0
Aug 2025
gpt-oss-20b (High)
OPEN
21B·3.6Ba
1540.0
Aug 2025
gpt-oss-20b (Low)
OPEN
21B·3.6Ba
1071.0
Aug 2025
gpt-oss-20b (Medium)
OPEN
21B·3.6Ba
1367.6