Availability for these models differs slightly; while both paid subscribers and users of Anthropic’s free chatbot will have access to Claude Sonnet 4, premium access to Claude Opus 4 will remain ...

Discover Claude Opus 4 and Sonnet 4 by Anthropic, revolutionising AI with advanced coding, reasoning, and multi-step ...

Anthropic's latest Claude models promise coding marathons and superior reasoning. But you'll pay premium rates for the ...