OpenAI released GPT-5.5 on April 23, 2026, its newest AI model, with significant improvements in reasoning, agentic task execution, and computer-use capabilities. OpenAI described it as its smartest and most intuitive model yet, with Greg Brockman saying it represents a step toward more agentic computing.

What GPT-5.5 Brings

The most notable advancement in GPT-5.5 is its computer-use capability — the ability to navigate and interact with software interfaces as a human would. Mark Chen, OpenAI's chief research officer, said GPT-5.5 shows "meaningful gains" in computer work compared to previous models, allowing it to complete multi-step software tasks that previously required human intervention at every step.

The model also brings improvements in:

  • Agentic task execution — GPT-5.5 can maintain context and take initiative across longer task sequences without losing track of the original objective
  • Reduced hallucination — improvements in grounding responses in provided context, particularly when working with code and structured data
  • Multimodal reasoning — the ability to reason across text, images, and structured data simultaneously

The "Super App" Vision

Brockman described GPT-5.5 as another step toward a "super app" — a multi-purpose program that combines the capabilities of many specialized tools. Rather than using separate applications for different tasks, a super app powered by GPT-5.5 would handle research, writing, coding, and execution within a single coherent context.

OpenAI has now released models at a brisk pace: November, December, March, and April 2026. The company is competing in a landscape where Google, Anthropic, and open-source labs are all releasing capable models, making sustained capability improvements essential for maintaining market position.

Agentic Coding and Enterprise

OpenAI positioned GPT-5.5 as covering "foundational enterprise areas like agentic coding and knowledge work" alongside broader consumer applications. The model is rolling out to ChatGPT Plus, Pro, Business, and Enterprise users starting Thursday, with API access following shortly after.

The competition with Anthropic is never far from the narrative. When asked about Claude's strengths, OpenAI executives pointed to GPT-5.5's performance on benchmarks and the breadth of the model's deployment across consumer and enterprise channels simultaneously.

Availability

GPT-5.5 is available now to ChatGPT Plus, Pro, Business, and Enterprise users. API access is expected within the week, with pricing tiers similar to the previous model's structure.