Introducing gpt-oss
OpenAI Blog
Aug 5, 2025 00:00
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Summary
The newly released gpt-oss-120b and gpt-oss-20b are open-weight language models that surpass similarly sized open models in reasoning and tool use, while remaining cost-effective and efficient for consumer hardware. Licensed under Apache 2.0, their accessibility and strong performance could accelerate AI research and broaden adoption in practical applications.
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.