claude-opus-4-5-migration Skill
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. Published by anthropics in claude-code.
What is claude-opus-4-5-migration Skill?
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. Published by anthropics in claude-code. This profile combines repository metadata with install, compatibility, and usage signals so developers can quickly decide whether it fits their agent workflow before opening the source repository.
Automated repository signals based on public metadata such as recency, license, installation evidence, and adoption. These are not a security audit or endorsement.
Key capabilities
- Includes SKILL.md support
- Reusable instructions support
- Research
- Research use cases
Technical details
- Install or run with Copy skill directory
When to use claude-opus-4-5-migration Skill
- Use it for research.
Built with
Editorial notes
Source
- Creator: anthropics
- Repository: anthropics/claude-code
- Skill file: plugins/claude-opus-4-5-migration/skills/claude-opus-4-5-migration/SKILL.md
What it does
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.
Skill instructions
Opus 4.5 Migration Guide One-shot migration from Sonnet 4.0, Sonnet 4.5, or Opus 4.1 to Opus 4.5. Migration Workflow 1. Search codebase for model strings and API calls 2. Update model strings to Opus 4.5 (see platform-specific strings below) 3. Remove unsupported beta headers 4. Add effort parameter set to "high" (see references/effort.md) 5. Summarize all changes made 6. Tell the user: "If you encounter any issues with Opus 4.5, let me know and I can help adjust your prompts." Model String Updates Identify which platform the codebase uses, then replace model strings accordingly. Unsupported Beta Headers Remove the context-1m-2025-08-07 beta header if present—it is not yet supported with Opus 4.5. Leave a comment noting this: python Note: 1M context beta (context-1m-2025-08-07) not yet supported with Opus 4.5 Target Model Strings (Opus 4.5) | Platform | Opus 4.5 Model String | |----------|----------------------| | Anthropic API (1P) | claude-opus-4-5-20251101 | | AWS Bedrock | anthropi
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Frequently asked questions
What is claude-opus-4-5-migration?
claude-opus-4-5-migration is a open-source AI agent skill with Copy skill directory. 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.
Who is claude-opus-4-5-migration best for?
claude-opus-4-5-migration is best for reusing agent instructions, scripts, and references, research workflows.
How do I install claude-opus-4-5-migration?
Install or run claude-opus-4-5-migration using Copy skill directory. Check claude-opus-4-5-migration for the latest setup command.
Is claude-opus-4-5-migration actively maintained?
claude-opus-4-5-migration may need a closer maintenance check before production use.
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