OpenAI Launches GPT-5.5 with Advanced Reasoning

OpenAI released GPT-5.5 on April 25, 2026, positioning the update as a key step toward an AI super app ^[1]. The new model features improved reasoning and faster processing speeds for technical tasks ^[1]. It specifically targets advancements in coding and scientific research ^[1][2].

GPT-5.5 achieved high scores on technical benchmarks, including Terminal-Bench 2.0 and Expert-SWE ^[1]. These results indicate the system is more capable of handling complex engineering problems ^[1]. Industry analysts note the update supports OpenAI's move toward integrated enterprise tools ^[2].