OpenAI launches GPT-5.5: Advanced AI for real-world tasks

OpenAI launches GPT-5.5, its most advanced AI model, for ChatGPT and Codex users. It excels in autonomous tasks, outperforms rivals, and moves closer to a unified AI superapp. API access coming soon.

OpenAI has launched GPT-5.5, its most advanced and intuitive AI model yet, marking a significant step toward unified agentic computing. The model is now available to Plus, Pro, Business, and Enterprise users in ChatGPT and Codex, with API access coming soon at $5 per million input tokens and $30 per million output tokens. GPT-5.5 excels at autonomous, multi-step tasks such as coding, web browsing, data analysis, and scientific research. It requires less human intervention and consumes fewer tokens than its predecessor, GPT-5.4. Benchmark tests show GPT-5.5 outperforming competitors like Claude Opus 4.7 and Gemini 3.1 Pro. OpenAI emphasizes iterative deployment and enhanced safety features, with the rollout starting April 23, 2026. This release is a major milestone toward OpenAI's vision of a comprehensive AI service, integrating multiple tools into a single platform for enterprise and consumer use.