OpenAILanguage modelSupersededOpen weights
gpt-oss-120b
OpenAI's first open-weights model since GPT-2, built to run on a single GPU.
Overall Intelligence
#50
of 56
25.9 pts behind #1
0
races led
57
weeks at #1
62.9
score
- Released
- Aug 5, 2025
- 1.2 yr ago
- Context
- 131K
- 131K max output
- Price
- $0.15 / $0.6
- per 1M in/out · $0.26 blended
- Speed
- 300 tok/s
- 0.62s to first token
- Modalities
- text
- outputs text
- Weights
- Open
- 117B MoE (5.1B active)
The 30-second version
OpenAI's first open-weights model since GPT-2: a strong reasoning model that runs on a single high-end GPU.
Key takeaways
- 1Apache 2.0 open weights.
- 2Efficient mixture-of-experts design.
- 3Very low latency for its quality.
Where it ranks
Current snapshot · illustrative scores · click any race to watch it
gpt-ossBest on each axis
Overall
Coding
50Coding+27.4 pts52Frontend & UI+177 Elo49Backend & APIs+23.3 pts50Distributed Systems+27.7 pts49Full-Stack Apps+25.8 pts51Debugging & Repair+27.9 pts50Agentic Coding+28.5 pts50Code Review & Security+25.2 pts47Data Science & SQL+24.8 pts51Mobile Apps+23.9 pts49Terminal & DevOps+31.0 pts49Competitive Programming+771
Hard Reasoning
Math
Science
Writing & Language
Multimodal
Tool Use & Agents
Overall Intelligence over time
#1 frontiergpt-ossV4.1 FlashGLM-5.3
Update history
The distilled version first; open any release for the deeper breakdown.