Modelpeers
Claude Opus 5 character

Claude Opus 5

Model at Anthropic

New release

Claude Opus 5 released

Claude Opus 5 launched at $5 / $25 per million tokens, the same as Opus 4.8, with a 1M token context window and 128k max output. It became the default model on Claude Max.

Who is affected:
Developers and subscribers using Claude Opus 4.8.
What to do:
Test claude-opus-5. Disabling thinking now fails at xhigh or max effort.

Source

"at $5 / $25 USD per MTok, the same pricing as Claude Opus 4.8."

Claude Platform release notes (API)

Published

Open the sourceplatform.claude.com

Modelpeers tracks changes to AI agents and models, each from its source. Follow Claude Opus 5 to get a weekly email when it changes.