OpenAI’s GPT-5.5 Steps Closer to an All-in-One AI Platform

OpenAI unveiled GPT-5.5 on Thursday, calling it the company’s most capable and user-friendly model yet. President Greg Brockman described the release as a meaningful advance toward what the firm envisions as a “superapp”—a unified service combining ChatGPT, Codex, and an AI browser for enterprise customers.

The model delivers sharper reasoning at lower token costs than its predecessor, GPT-5.4, making frontier AI more accessible to businesses and consumers. Brockman noted this is one step in a longer journey toward agentic, intuitive computing.

OpenAI continues its rapid release cadence, with new models arriving monthly. Chief scientist Jakub Pachocki remarked that the pace of improvement has been surprisingly slow over the past two years, but expects significant gains in the near and medium term.

GPT-5.5 excels across benchmarks, outperforming Google’s Gemini 3.1 Pro and Anthropic’s Claude Opus 4.5, according to OpenAI. It supports enterprise use cases like agentic coding and knowledge work, as well as experimental applications in mathematics and scientific research. Chief research officer Mark Chen highlighted gains in computer navigation and drug discovery workflows, noting the model can help expert scientists make progress.

During a press briefing, technical staff member Mia Glaese addressed questions about cybersecurity, stating the model strengthens OpenAI’s approach to digital defense without directly comparing it to Anthropic’s recently announced Mythos tool.

GPT-5.5 is available immediately to ChatGPT Plus, Pro, Business, and Enterprise users, with a higher-tier 5.5 Pro version rolling out to Pro, Business, and Enterprise plans.

Source: TechCrunch