claude-opus-4-5-migration

Update Claude API calls to Opus 4.5 by running a one-shot migration that replaces model strings across Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry. It removes unsupported beta headers and adds a high effort parameter, then summarizes changes for quick review.

Yes, migrating to Opus 4.5 works with AWS Bedrock and Google Vertex AI. The migration detects platform-specific model strings across these providers, plus Anthropic API and Azure AI Foundry, and replaces them with the correct Opus 4.5 equivalents in your codebase.

Upgrading from Sonnet 4.x to Opus 4.5 requires updating model strings and removing unsupported beta headers. The migration enforces adding an effort parameter set to high, annotates changes for traceability, and summarizes all modifications to ensure behavioral compatibility.

No, you should not migrate Haiku 4.5 prompts to Opus 4.5. The migration explicitly warns against migrating Haiku 4.5, as it only supports updating prompts, model strings, and API calls from Claude Sonnet 4.x or Opus 4.1 to Opus 4.5.

You need to remove beta headers when upgrading to Opus 4.5 because they are unsupported and cause compatibility issues. The migration automatically strips unsupported beta headers from your API calls and annotates the changes for traceability during the update process.