migration-guide changedmodels/opus-5-5/migration-guide
Nearest release: v2.1.304, published under an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+1added
Lines−1removed
From line
9
where the diff opens
First seen
23 Sep 2026
this site's first read of the page
Recorded edits18to this page, all time
The whole hunk
from line 9, old and new numbered
/
from line 9
99</Note>
1010
1111<Tip>
12 **Automate your migration with the Claude API skill.** In Claude Code, run `/claude-api migrate` to invoke the bundled [Claude API skill](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/claude-api-skill#migrating-to-a-newer-claude-model). It works for any current Claude model as the target:
12 **Automate your migration with the [Claude API skill](https://platform.claude.com/docs/en/agents-and-tools/agent-skills/claude-api-skill#migrating-to-a-newer-claude-model).** It comes bundled with Claude Code and works for any current Claude model as the target:
1313
1414 Let Claude Code migrate your code for you
1515
No line in this hunk matches that.