Software giants are seeing their worst stock performance in years on fears of AI disruption. Now they have a new problem.

The company is positioning its newest system as its strongest agentic coding model yet, as it faces pressure to keep pace with its rival Anthropic.

OpenAI has announced the release of GPT-5.5, the latest upgrade to the company's family of models powering its ChatGPT and Codex apps. OpenAI describes GPT-5.5 as better at multi-step work, claiming it can plan,

OpenAI has launched GPT-5.5, calling it its most capable AI yet, with major advances in agentic reasoning, multimodal understanding, and long-context performance. Positioned above GPT-4o and GPT-5, the model targets professional developers and enterprises ...

OpenAI’s offensive move comes immediately after the launch of competitor Anthropic’s Mythos model. The two companies are now competing for access to government agencies.

OpenAI announced GPT-5.5, its latest AI model that is better at coding, using computers and pursuing deeper research capabilities. The launch comes just weeks after Anthropic unveiled Claude Mythos Preview,

So when it comes to models that the general public can access, GPT-5.5 has retaken the crown for OpenAI, achieving the state-of-the-art across 14 benchmarks.

A recent funding round valued OpenAI at more than $850 billion.

In a letter on Thursday, Altman wrote, “I am deeply sorry that we did not alert law enforcement to the account that was banned in June,” and pledged that OpenAI would work with governments and mental health experts to prevent anything similar from happening again,

Nvidia Corp. has rolled out OpenAI's Codex coding agent across its global workforce, with CEO Jensen Huang hailing the move as a milestone in "the age of AI," while OpenAI CEO Sam Altman said early company-wide testing "was awesome.