Anthropic releases ‘more efficient’ Claude Opus 5

Anthropic has introduced Claude Opus 5, an update to its hybrid reasoning model that promises improved performance on coding and knowledge tasks, more capable agents, and sharper professional work. Introduced July 24 , Claude Opus 5 provides greatly improved performance at the same cost as its predecessor, Opus 4.8, Anthropic said. Anthropic described Claude Opus 5 as a thoughtful and proactive model that comes close to the frontier intelligence of Claude Fable 5 at half the price.