# Claude Opus 4 5 Migration

> Migrate prompts and code from Claude Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Use when the user wants to update their codebase, prompts, or API calls to use Opus 4.5. Handles model string updates and prompt adjustments for known Opus 4.5 behavioral differences. Does NOT migrate Haiku 4.5.

## Facts
- Page: https://tashan.sh/capability/skill-transaurus-claude-opus-4-5-migration
- tashan id: skill:transaurus/claude-opus-4-5-migration
- Source: https://github.com/transaurus/staging-davila7-claude-code-templates
- Type: skill
- Category: ai
- tashan score: 38.0 / 100
- Adoption: 20.0
- Upkeep: 79.0
- Freshness: 54.0
- Evidence coverage: 84% of the inputs this score can use
- Health: active
- Instruction depth: not yet graded
- License: MIT
- Official: no

## Install

```sh
cp -r claude-opus-4-5-migration ~/.claude/skills/
```

## Security audit
Not scanned. We audit npm-published capabilities; this one has no npm package we can resolve, or has not reached the queue. This is not a clean bill of health.

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Measured 2026-09-12 by tashan (https://tashan.sh) from public evidence. Scorer s5.