Introducing gpt-oss
What changed
We’re releasing gpt-oss-120b and gpt-oss-20b—two state-of-the-art open-weight language models that deliver strong real-world performance at low cost. Available under the flexible Apache 2.0 license, these models outperform similarly sized open models on reasoning tasks, demonstrate strong tool use capabilities, and are optimized for efficient deployment on consumer hardware.
Why it matters
A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.
How it compares
Related prior coverage to compare against:
- gpt-oss-120b & gpt-oss-20b Model Card
- gpt-oss-safeguard technical report
- OpenAI Codex with Ollama
Sources
- Introducing gpt-oss (openai-blog)primary