openai/gpt-oss-120bgpt-oss-120b is an open-weight, 117B-parameter Mixture-of-Experts (MoE) language model from OpenAI designed for high-reasoning, agentic, and general-purpose production use cases.
Scores on standardized evaluations. Higher is better — and rank shows where gpt-oss-120b lands among all models tracked on Model Beat.
Graduate-level scientific reasoning
Common-sense trick questions
Factual accuracy & hallucination
Novel ML problem-solving
Olympiad-qualifier math
Multi-step agentic tasks
Autonomous task length
Command-line agentic tasks
Model & benchmark data from Epoch AI (CC BY); pricing, specs & descriptions from OpenRouter.