OpenAI has implemented improvements to the GPT-5 model's performance within the Cursor platform, resulting in approximately twice the speed in API latency and caching efficiency. Users report that GPT-5 now operates significantly faster in Cursor, enhancing user experience. Independent tests comparing GPT-5 to other models such as Sonnet-4 demonstrate GPT-5's superior ability to learn from new information, even when the task involves unfamiliar APIs like the Gemini multi-speaker speech API. GPT-5's in-context learning capabilities have been highlighted as a key advantage over models like Sonnet-4, which struggle with similar tasks. This update marks a notable advancement in GPT-5's responsiveness and adaptability within the Cursor environment.