Anthropic rolls out Opus 5 AI model in efficiency upgrade | Reuters

Anthropic launched Opus 5, achieving near-parity with its flagship Fable 5 model at half the cost, positioning it for everyday office and programming tasks. The efficiency upgrade reflects rapid model iteration and addresses the cost-performance tradeoff as Fable 5 faces export restrictions due to security concerns.

This Wire brief sits within Fusion42's coverage of AI Frontier Models. Wire is Fusion42's founder-focused intelligence feed: each story is connected to the funds and startups it names — every one with a live profile on Raise or Scout — so founders can follow the capital and the momentum behind the headline rather than just the headline itself. Wire analysis is one of the live surfaces Arthur reasons over.