Addendum to the OpenAI o3 and o4-mini system card: OpenAI o3 Operator

Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator

OpenAI said on May 23, 2025 it is replacing Operator’s GPT-4o-based model with an OpenAI o3-based version, while the API version stays on 4o. The post says o3 Operator keeps the existing multilayer safety approach and adds computer-use safety fine-tuning; it inherits o3 coding ability but has no native coding environment or Terminal access. The key gap is disclosure: the addendum title points to a system card update, but the post does not disclose benchmark scores, misuse metrics, or rollout scope.

Why it matters: This is a substantive OpenAI deployment update, with HKR-H from the o3-for-Operator / 4o-for-API split, HKR-K from explicit safety and capability boundaries, and HKR-R from browser-agent relevance. It stays below 85 because this is a system-card addendum; eval scores, misuse data