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 has announced the release of its latest AI models, Claude Opus 4 and Claude Sonnet 4, which aim to support a wider range of professional and academic tasks beyond code generation. According to Anthropic, Claude Opus 4 is optimized for extended, focused sessions that involve complex reasoning, context retention and tool use.

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

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

Anthropic, backed by Amazon.com, Inc. (NASDAQ:AMZN), has launched its most advanced AI models to date: Claude Opus 4 and Claude Sonnet 4. Touted as the new gold standard in AI, these models can autonomously complete full workdays,