On coding, we’ve worked closely with startups like Cursor, Cognition, Augment Code, Factory, and Warp to improve GPT‑5.1’s coding personality, steerability, and code quality. In general, GPT‑5.1 feels more intuitive to use for coding and more communicative with user-facing updates as it completes tasks.

Finally, we’re introducing two new tools with GPT‑5.1: an apply_patch tool designed to edit code more reliably and a shell tool to let the model run shell commands.

GPT‑5.1 is the next advancement in the GPT‑5 series, and we plan to continue to invest in more intelligent and capable models to help developers build reliable agentic workflows.

To make GPT‑5.1 faster, we overhauled the way we trained it to think. On straightforward tasks, GPT‑5.1 spends fewer tokens thinking, enabling snappier product experiences and lower token bills. On difficult tasks that require extra thinking, GPT‑5.1 remains persistent, exploring options and checking its work in order to maximize reliability.