Artificial intelligence firm OpenAI has announced plans to reshuffle its Model Behavior team. According to reports, the team is a small but influential group of researchers that shapes how the firm’s ...

On Thursday, Anthropic released Claude Opus 4 and Claude Sonnet 4, marking the company’s return to larger model releases after primarily focusing on mid-range Sonnet variants since June of last year.

An AI model launched last week appears to have shipped with an unexpected occasional behavior: checking what its owner thinks first. “That is ludicrous,” Willison told Ars Technica upon initially ...