OpenAI· GPT / ChatGPT / APINew model

gpt-oss-safeguard technical report

OpenAI released two open-weight reasoning models, gpt-oss-safeguard-120b and gpt-oss-safeguard-20b, post-trained from the gpt-oss models to label content under a provided policy.

From the source

gpt-oss-safeguard-120b and gpt-oss-safeguard-20b are two open-weight reasoning models post-trained from the gpt-oss models and trained to reason from a provided policy in order to label content under that policy.

openai.com

Announced

29 Oct 2025 00:00 UTC

Detected

03 Aug 2026 21:11 UTC (+278d after)