OpenAI Releases GPT-5.1 On Its API Platform

IBL News | New York

OpenAI released GPT-5.1 on its API platform last week.

This model adapts the time spent thinking to the complexity of the task. It also features a “no reasoning” mode to respond faster to tasks that don’t require deep thinking.
GPT-5.1 features extended prompt caching for up to 24 hours of cache retention, enabling faster follow-up questions at a lower cost.
On coding, OpenAI said it has worked closely with Cursor, Cognition, Augment Code, Factory, and Warp to make GPT‑5.1 more intuitive and communicative.