Introducing GPT-5.1 for developers

OpenAI has released GPT-5.1 via its API, targeting developers with enhanced capabilities. The update introduces faster adaptive reasoning, which dynamically adjusts compute based on task complexity, and extends prompt caching to reduce latency for repeated queries. Notably, GPT-5.1 brings improved coding performance, along with two new built-in tools: apply_patch, for applying code changes directly, and shell, for executing command-line operations. According to the OpenAI Blog, these additions aim to streamline developer workflows by reducing the number of external integrations needed. For builders, this means potentially more efficient automated coding and debugging pipelines, as the model can now perform actions like patching files or running scripts natively. The extended caching further benefits applications with high-volume, similar requests, such as code review or automated testing.