GPT-5.5 can navigate your desktop, switch between tools, and nearly doubles Claude Opus 4.7 on FrontierMath — OpenAI's biggest leap in months
OpenAI launched GPT-5.5 on April 23, an agentic model that natively controls desktop applications — clicking buttons, typing text, and orchestrating multi-step workflows without plugins. It scores 39.6% on FrontierMath Tier 4 (vs Claude Opus 4.7's 22.9%) and 82.7% on Terminal-Bench 2.0. Token generation is 20% faster than GPT-5.4 at the same latency. Rolling out to Plus, Pro, Business, and Enterprise users in ChatGPT and Codex.