Model WarsAugust 5, 2025via OpenAI Blog
gpt-oss-120b & gpt-oss-20b Model Card
Why it matters
OpenAI releasing open-weight reasoning models (120B and 20B parameters) under permissive Apache 2.0 licensing signals a major shift in competitive strategy—making frontier reasoning capabilities accessible to the broader developer ecosystem rather than gatekeeping behind API walls.
Key signals
- Two models released: gpt-oss-120b and gpt-oss-20b
- License: Apache 2.0 (permissive open-source)
- Capability focus: reasoning models
- Open-weight distribution (not just API access)
- Published August 5, 2025
The hook
OpenAI just open-sourced two reasoning models under Apache 2.0. Here's why that changes everything.
We introduce gpt-oss-120b and gpt-oss-20b, two open-weight reasoning models available under the Apache 2.0 license and our gpt-oss usage policy.
Relevance score:75/100