[Release Notes] GPT 5.5 unveiled, delivering better results with fewer tokens

OpenAI unveiled GPT-5.5, claiming stronger intelligence and better token efficiency than GPT-5.4.

The model is designed to improve agentic coding, computer use, knowledge work, and early scientific research.

GPT-5.5 is rolling out first to paid ChatGPT and Codex tiers, with API access coming soon.

OpenAI says the upgrade could boost productivity in tasks like coding, document work, and data analysis.