Lead story
Models & availability
Latest
Lead story
Models & availability
Latest
OpenAI introduces two open-weight reasoning models, gpt-oss-120b and gpt-oss-20b, under Apache 2.0 license and gpt-oss usage policy.
From the source
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.
openai.com