Claude Opus 4.8 Released, But Not Showing Up in Claude Code? Here's the Fix
Anthropic shipped Claude Opus 4.8 on May 28, and like a lot of people, I opened Claude Code, ran /model, and… it wasn’t there. If you’re staring at a model picker that stubbornly refuses to list Opus 4.8, this post is the two-minute fix — plus an explanation of why it happens, because the reason turns out to be more interesting than “just update.” TL;DR Claude Opus 4.8 requires Claude Code v2.1.154 or newer. If you’re on anything below that line, the model simply won’t appear in the picker. Run: ...