This addendum to the GPT-5 system card shares a new model: GPT-5-Codex, a version of GPT-5 further optimized for agentic coding in Codex. GPT-5-Codex adjusts its thinking effort more dynamically based on task complexity, responding quickly to simple conversational queries or small tasks, while independently working for longer on more complex tasks.
This GPT-5 system card addendum provides updated safety metrics for GPT-5. 1 Instant and Thinking, including new evaluations for mental health and emotional reliance.
This system card outlines the comprehensive safety measures implemented for GPT‑5. 1-CodexMax.
GPT‑5. 3-Codex is the most capable agentic coding model to date, combining the frontier coding performance of GPT‑5.
We’ve released new versions of GPT-3 and Codex which can edit or insert content into existing text, rather than just completing existing text.
This system card details GPT-5’s improvements in handling sensitive conversations, including new benchmarks for emotional reliance, mental health, and jailbreak resistance.