April 24, 2026
SAN FRANCISCO — OpenAI has launched GPT-5.5, its most capable artificial intelligence model to date, marking another rapid-fire leap in the escalating AI race just six weeks after the company debuted its previous flagship, GPT-5.4. – OpenAI GPT-5.5 release.
The company described GPT-5.5 as its smartest and most intuitive model yet, and the next step toward a fundamentally new way of getting work done on a computer. The model excels at writing and debugging code, researching online, analyzing data, creating documents and spreadsheets, operating software, and moving across tools until a task is finished. OpenAI
Speaking during a press briefing, OpenAI co-founder Greg Brockman called it “a new class of intelligence” and “a big step towards more agentic and intuitive computing,” adding that GPT-5.5 is “a faster, sharper thinker for fewer tokens” and can handle multi-step workflows more autonomously with less user input. Axios
OpenAI President Brockman said what makes the model especially notable is “how much more it can do with less guidance. It can look at an unclear problem and figure out just what needs to happen next.” CNBC
The gains are strongest in agentic coding, computer use, knowledge work, and early scientific research — areas where progress depends on reasoning across context and taking action over time. OpenAI
ChatGPT currently counts more than 900 million weekly active users and over 50 million subscribers, while Codex reports 4 million active users and 9 million paying business customers. Fortune
GPT-5.5 and GPT-5.5 Pro became available in the API on April 24, priced at $5 per million input tokens and $30 per million output tokens, with GPT-5.5 Pro priced at $30 per million input tokens and $180 per million output tokens. OpenAI
OpenAI said the cybersecurity risks presented by advanced AI have been a top concern for tech executives and government officials, and that GPT-5.5 underwent extensive third-party safeguard testing and red-teaming for cyber and biological risks. OpenAI GPT-5.5 release- CNBC
