The most popular language models out there may be accessed via API, but open models — as far as that term can be taken seriously — are gaining ground. Mistral, a French AI startup that raised a huge ...

In a statement provided to Fortune after the leak, an Anthropic spokesperson described Claude Mythos as an AI performance “step change” and said the model is “the most capable we’ve built to date.” ...

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More OpenAI isn’t done trying to live up to the “open” in its name. While not ...

The draft blog post describes a compute‑intensive LLM with advanced reasoning that Anthropic plans to roll out cautiously, starting with enterprise security teams. Anthropic didn’t intend to introduce ...

OpenAI on Tuesday announced the next phase of its cybersecurity strategy and a new model specifically designed for use by digital defenders, GPT-5.4-Cyber. The news comes in the wake of an ...