The company said it was taking the measures as a precaution and that the team had not yet determined if its newst model has crossed the benchmark that would require that protection.

Anthropic's Claude Opus 4 outperforms OpenAI's GPT-4.1 with unprecedented seven-hour autonomous coding sessions and record-breaking 72.5% SWE-bench score, transforming AI from quick-response tool to day-long collaborator.

Anthropic's newest editon of its flagship AI product will address significant limitations in current large language models.

Anthropic says its Claude Opus 4 model frequently tries to blackmail software engineers when they try to take it offline.

Bowman later edited his tweet and the following one in a thread to read as follows, but it still didn't convince the naysayers.