OpenAI gpt-oss-120b
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A to Z
- A · App
- No
- B · Built By
- OpenAI
- C · CEO & Politics
- Sam Altman — Independent; self-described 'politically homeless' (2025); former Democratic donor; $1M personal donation to Trump inaugural fund (2025)
- D · Date
- 2025
- E · Expertise
- Intermediate+
- F · Free Tier
- Yes
- G · Generates
- Text only
- H · Deployment
- Cloud + Local (open weights)
- I · Inputs
- Text
- J · Jurisdiction
- USA
- K · Key Staffers
- Greg Brockman (President), Jakub Pachocki (Chief Scientist), Brad Lightcap (COO), Fidji Simo (CEO Applications), Sarah Friar (CFO), Mark Chen (SVP Research), Denise Dresser (CRO)
- L · Languages
- English-primary
- M · Model Type
- LLM
- N · Safety Issues
- None reported
- O · Open Source
- Yes — open weights
- P · Pricing
- Free (open weights, Apache 2.0)
- Q · AIDb Rating
- 7/10 · AIDb v2.0 (curated): Capability 6.5/10 · Currency 6/10 · Access 10/10 · Significance 4/10 → 6.55
- R · What Makes It Special
- OpenAI's gpt-oss-120b, the larger of its two open-weight gpt-oss reasoning models, for production and high-reasoning use: 117B parameters with 5.1B active, with MXFP4-quantized mixture-of-experts weights so it fits on one 80GB GPU such as an NVIDIA H100 or AMD MI300X. Under Apache 2.0, it offers low, medium or high reasoning effort, full chain-of-thought access, fine-tuning and native function calling, web browsing, Python execution and Structured Outputs, using OpenAI's harmony format.
- S · Stock / Status
- Private (~$852B valuation, Mar 2026)
- T · Training Cutoff
- [UNKNOWN]
- U · Users
- [UNKNOWN]
- V · Voice Chat
- No
- W · Weights
- Downloadable
- X · X Handle
- @OpenAI
- Y · Year Founded
- [UNKNOWN]
- Z · Bottom Line
- Open-weights LLM from OpenAI, released 2025.
Data completeness 88% · Last verified 2026-06-11 · Primary source ↗
Cite this
“OpenAI gpt-oss-120b.” AIDb — The AI Database. Verified 2026-06-11. https://theaidatabase.com/m/openai-gpt-oss-120b.html
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