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OpenAI Unveils Its New, More Powerful Model
The maker of ChatGPT is taking a more open approach to cybersecurity than its chief rival, Anthropic.
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OpenAI said its new technology was better at writing computer code and tasks related to other office work.
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Gabby Jones/Bloomberg
By
Cade Metz
Reporting from San Francisco
April 23, 2026,
2:00 p.m. ET
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The artificial intelligence company Anthropic said this month that it would share its latest A.I. technology with only a small number of partners because of cybersecurity concerns.
On Thursday, Anthropic’s chief rival, OpenAI, took a different approach. The company unveiled a new flagship A.I. model, GPT-5.5, and began sharing the technology with the hundreds of millions of people who use ChatGPT, its online chatbot.
The companies’ contrasting strategies are a clear indication that Anthropic and OpenAI disagree on how they should handle technology that is increasingly useful for the people trying to defend computer networks as well as those trying to break into those networks.
But OpenAI is not throwing caution to the wind. The company said it was not yet releasing the technology as an application programming interface, or A.P.I., which would allow companies and individuals to fold the technology into their own software applications and other tools. That will give OpenAI more time to study security issues in the new system.
In a blog post, OpenAI described the new model as a significant upgrade over the systems that previously powered ChatGPT, adding that the new technology was better at writing computer code and performing tasks related to other office work.
Code generation has become an increasingly important skill for A.I. systems, including technology from giants like Google and smaller companies like OpenAI and Anthropic.
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