Addendum to GPT-5 system card: GPT-5-Codex
OpenAI Blog
OpenAI released GPT-5-Codex, a variant of GPT-5 optimized for agentic coding that adjusts its computational effort based on task complexity. The model allocates more processing time to complex coding tasks while responding quickly to simple queries. This enables the model to handle a broader range of coding workflows without fixed latency constraints.
Why it matters
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.
