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 ...

Meta debuted its first major AI model, Muse Spark, spearheaded by chief AI officer Alexandr Wang, who joined nine months ago and leads Meta Superintelligence Labs. The company is desperate to regain ...

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 ...

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.” ...

By putting the weights of a highly capable, 33B-parameter agentic model in the hands of researchers and startups, Poolside is ...

The AI firm said that unlike previous model bugs, this issue "crept in subtly".

OpenAI says its safeguards “sufficiently reduce cyber risk” for now, while GPT-5.4-Cyber is a new cybersecurity-focused model.