Anthropic upgrades Claude with new Opus 5 model, details here

Anthropic has launched Claude Opus 5, upgrading its largest Claude model from 4.8 to 5.

The company says Opus 5 is close to its most capable frontier model, Fable 5, while costing half as much.

Claude Opus 5 is available now at the same input and output token prices as Opus 4.8, and is the default on Claude Max.

The release also adds mid-conversation tool changes on the Claude Platform and automatic API fallbacks for safety-flagged requests.