On April 23, 2026, OpenAI officially launched its latest flagship AI model GPT-5.5. CEO Greg Brockman defined it as the "smartest and most intuitive" model in the company's history, and called its release a significant step closer to OpenAI's vision of building an AI "SuperApp".

ChatGPT

Performance Leap and Core Advantages

Compared to previous versions, GPT-5.5 has achieved significant breakthroughs in multiple key dimensions:

  • High Performance at Low Cost: Compared to version 5.4, the new model is faster, more agile, and uses fewer tokens, greatly lowering the usage threshold for enterprises and consumers.

  • Leading Benchmark Tests: Data released by OpenAI shows that GPT-5.5 scored higher than Google's Gemini 3.1 Pro and Anthropic's Claude Opus 4.5 in multiple benchmark tests.

  • Breakthroughs in Professional Fields: Chief Research Officer Mark Chen pointed out that GPT-5.5 performs exceptionally well in handling computer tasks, scientific research, and drug development workflows, significantly assisting expert-level scientific research.

Strategic Layout: From Model to "SuperApp"

Brockman reiterated Sam Altman's previous vision, which is to integrate ChatGPT, Codex, and AI Browser into a fully functional, all-in-one service program, like a "Swiss Army knife." This strategic goal puts it in direct competition with Elon Musk's X platform.

To accelerate enterprise penetration, OpenAI also announced the following actions:

  • Deep Collaboration with Infosys: Integrating tools like Codex into Infosys' Topaz AI platform, leveraging its delivery capabilities across 60 countries to help large enterprises modernize software and automate processes.

  • Launch of Codex Labs Project: Collaborating with global top consulting companies such as Accenture, PwC, and Tata Consultancy Services to build a distribution network. Currently, the weekly active users of Codex have exceeded 4 million.

Safety and Distribution

In response to recent industry concerns about cybersecurity (such as the leakage incident of Anthropic's Mythos tool), OpenAI emphasized that GPT-5.5 will enhance digital defense capabilities.

Release Plan:

GPT-5.5 was officially launched this Thursday, initially available to ChatGPT Plus, Pro, Business, and Enterprise users. Among them, the high-performance 5.5 Pro version will be exclusively provided to Pro and enterprise subscription users.