The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some tasks) than its predecessors).
GPT-5.1 speeds up coding with adaptive and no-reasoning modes. New prompt caching cuts API costs for embedded app developers. New tools make AI agents more capable inside modern IDEs. OpenAI is back ...
OpenAI announced they are extending the Responses API to make it easier for developer to build agentic workflows, adding ...
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