Is gpt-oss out yet?
Yes.
About gpt-oss
OpenAI's first open-weight models since GPT-2 — Apache-licensed 120B and 20B reasoning models.
How we confirmed it
Released via official access
August 5, 2025 at 12:00 AM UTC
Release timeline
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Benchmarks
SWE-Bench Pro#37self-reported
openai/gpt-oss-120b · via Hugging Face · captured Aug 16, 2026 · source
16.2
LM Arena#243
gpt-oss-20b · via LM Arena · 10,679 votes · captured Aug 16, 2026 · source
1317.5397339648462
Reasoning#50
GPT-OSS 20B · via BenchLM.ai · captured Jul 14, 2026 · source
12.4
Multilingual#49
GPT-OSS 120B · via BenchLM.ai · captured Jul 14, 2026 · source
36.4
Knowledge#36
GPT-OSS 120B · via BenchLM.ai · captured Aug 16, 2026 · source
64
Sourced metrics mirrored with attribution - not community sentiment.
Data from BenchLM.ai.
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Model Pulse
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Community consensus
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Compare gpt-oss with another model →
Also waiting on: Gemini 3.5 Pro, Claude Fable 5.1, Claude Mythos 5.1, GLM-6
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