The $20/month Claude 4 Opus failed to beat its free sibling, Claude 4 Sonnet, in head-to-head testing. Here's how Sonnet quietly crushed expectations with smarter, safer code.

If you're not familiar with Claude, it's the family of large-language models made by the AI company Anthropic. And Claude ...

Anthropic has introduced its next generation of Claude models, Claude Opus 4 and Claude Sonnet 4, which the company said set new standards for coding, advanced reasoning, and AI agents.

Claude Sonnet 4 brings greater coding skills for free. Claude Sonnet 4, now Anthropic’s default general-purpose model, also introduces some tweaks specifically to boost its coding prowess.

Claude Opus 4 and Claude Sonnet 4, part of Anthropic’s new Claude 4 family of models, can analyze large datasets, execute long-horizon tasks, and take complex actions, according to the company.

Claude Sonnet 4: Anthropic has unveiled Claude Sonnet 4, the upgraded version of its first hybrid reasoning model - Claude Sonnet 3.7. The latest version offers frontier performance that’s ...

AI startup Anthropic held an experiment where it gave its AI bot Claude its own store to manage, and the results were ...

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.

A new Anthropic report shows exactly how in an experiment, AI arrives at an undesirable action: blackmailing a fictional ...

To Anthropic researchers, the experiment showed that AI won’t take your job just yet. Claude “made too many mistakes to run ...

The CEO of Windsurf, a popular AI-assisted coding tool, said Anthropic is limiting its direct access to certain AI models.

These and other AI models don't always agree. Sometimes they'll respond with 42 or 37, as reported by other Register hacks ...