OpenAI Challenges Anthropic: GPT-5.6 and ChatGPT Work in Full Force

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OpenAI Unveils New Ambitions with GPT-5.6 and ChatGPT Work
OpenAI has recently lifted the veil on significant updates that go far beyond a mere evolution of its existing models. These announcements mark a crucial step in OpenAI's strategy to distinguish itself from competitors, particularly Anthropic.
Introduction of the GPT-5.6 Models
As part of its recent announcements, OpenAI introduced three new models: GPT-5.6 Sol, Terra, and Luna. The release of version 5.6 was anticipated, although it was delayed due to government intervention last month. This delay followed a media frenzy surrounding Anthropic's Fable 5 and Mythos 5 models, which had garnered significant attention.
Launch of ChatGPT Work
At the same time, OpenAI unveiled ChatGPT Work, an innovation that appears to be a direct response to Anthropic's Claude Cowork. This new tool allows the AI to interact directly with the user's desktop and browser to accomplish various tasks. While this functionality is not entirely new, having been previously integrated into OpenAI's programming tool Codex, its separation into a distinct product aims to make it more accessible to non-technical users.
OpenAI Targets Anthropic
It is clear that OpenAI has its sights set on Anthropic with these new offerings. The new models are clearly designed to compete with the performance and pricing of Anthropic's products. Here’s an overview of the capabilities of the new models:
- Sol: The most advanced model, comparable to the reasoning mode of GPT-5.5.
- Terra: A standard model, slightly less powerful than Sol, but still equivalent to GPT-5.5.
- Luna: The least powerful model, corresponding to the instant mode of GPT-5.5.
Enhanced Performance and Efficiency
OpenAI proudly announced that GPT-5.6 Sol achieved an impressive score of 53.6 on the Agents' Last Exam, surpassing Claude Fable 5 by 13.1 points. Additionally, in the Artificial Analysis Intelligence Index, Sol nearly matched Fable 5 while completing its tasks in 61% less time. OpenAI also highlights the economic efficiency of GPT-5.6, particularly Sol, which outperforms Fable 5 by 11.4 points at a significantly lower cost.
Strengthened Security
In response to concerns raised by authorities regarding the safety of the models, OpenAI assured that GPT-5.6 incorporates advanced protective measures. These include real-time checks, continuous monitoring, and access adjustments based on trust and risk levels.
Features of ChatGPT Work
ChatGPT Work is designed to be a powerful office productivity tool, capable of generating spreadsheets, PowerPoint presentations, and complete websites. It can manage complex projects by breaking them down into simpler tasks. OpenAI recommends using ChatGPT Work for well-known tasks, such as budget analysis or preparing business meetings. Early users have reported benefits similar to those offered by Claude Cowork, particularly in optimizing lead management systems.
Availability and Integration
ChatGPT Work will be accessible on the web and mobile devices for subscribers of the Pro, Enterprise, and Edu plans, with an extension to Plus and Business plans expected in the coming days. OpenAI plans to merge the ChatGPT and Codex applications into a single app, although it remains to be seen whether ChatGPT Work will be included in this new combined application.
Conclusion
The question remains whether the enhanced performance and reduced cost of GPT-5.6 will encourage users to prefer OpenAI over Anthropic. User feedback will play a crucial role in assessing this new dynamic in the market.
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