gpt-oss-120b

OpenAI's first open-weights release since GPT-2.

Released

Aug 5, 2025

Price in / out

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Blended $/1M

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Context

128K

Parameters: 117B / 5.1B active. License: Apache-2.0.

Benchmark scores

Benchmark	Score	Δ vs prior	Rank (current)	Configuration	Source
SWE-bench Verified	62.4%	—	#7 of 8	leaderboard	benchlm.ai ↗
τ²-bench (Telecom)	65.8%	—	#7 of 9	leaderboard	benchlm.ai ↗
Artificial Analysis Intelligence Index	23.8	—	#9 of 10	leaderboard	benchlm.ai ↗

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