Free, Pro, Max, Team, and Enterprise Claude plans can access Claude Sonnet 4 and Opus 4 now, with an extended thinking mode ...

The $20/month Claude 4 Opus failed to beat its free sibling, Claude 4 Sonnet, in head-to-head testing. Here's how Sonnet ...

During its inaugural developer conference, Anthropic launched two new AI models the startup claims are among the industry's ...

Large language models (LLMs) like the AI models that run Claude and ChatGPT process an input called a "prompt" and return an ...

Claude Opus is Anthropic's largest version of the model family with more power for longer, complex tasks, whereas Sonnet is ...

Anthropic's new Claude Opus 4 and Sonnet 4 AI models deliver state-of-the-art performance in coding and agentic workflows.

Anthropic kicked off its first-ever Code with Claude conference today with the announcement of a new frontier AI system. The ...

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 ...

Claude Opus 4 is Anthropic’s most powerful AI model to date, according to the company’s announcement, and capable of working ...

A third-party research institute Anthropic partnered with to test Claude Opus 4 recommended against deploying an early ...

Large language model developer Anthropic PBC today rolled out its newest Claude 4 frontier models, starting with Opus 4 and ...

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