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claude-opus-4-5-migration

Migrates Claude AI integrations from older versions to 4.5 across major platforms.

1|Updated Mar 13, 2026
Search Tags:#prompt engineering#llm#claude#opus 4.5#api update#model migration
One-click install
npx skills add https://github.com/daithang59/docvault --skill claude-opus-4-5-migration-daithang59
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: claude-opus-4-5-migration
Source: https://github.com/daithang59/docvault/tree/main/.agent/skills/claude-opus-4-5-migration
Command: npx skills add https://github.com/daithang59/docvault --skill claude-opus-4-5-migration-daithang59

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill streamlines the process of updating codebases, prompts, and API calls from older Claude models (Sonnet 4.0, Sonnet 4.5, Opus 4.1) to the latest Opus 4.5, ensuring compatibility and leveraging new model capabilities.

Core Features & Use Cases

  • Model String Updates: Automatically replaces outdated model identifiers with the correct Opus 4.5 strings for various platforms (Anthropic API, AWS Bedrock, Google Vertex AI, Azure AI Foundry).
  • Prompt Adjustment Guidance: Provides specific instructions and code snippets to address known behavioral differences in Opus 4.5, such as tool overtriggering, over-engineering, code exploration, and frontend design.
  • Unsupported Header Removal: Identifies and removes deprecated beta headers that are incompatible with Opus 4.5.
  • Use Case: A developer needs to migrate their application's AI integration from claude-opus-4-1-20250422 to claude-opus-4-5-20251101 across their Python codebase and system prompts. This Skill guides them through updating model strings, removing the context-1m-2025-08-07 header, and applying prompt adjustments for better Opus 4.5 performance.

Quick Start

Use the claude-opus-4-5-migration skill to update all model strings in the project to claude-opus-4-5-20251101 and remove any context-1m-2025-08-07 headers.

Frequently Asked Questions about claude-opus-4-5-migration

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I migrate Claude API calls to Opus 4.5?▼

To migrate Claude API calls to Opus 4.5, update your model strings to `claude-opus-4-5-20251101` across your codebase. This process also involves removing unsupported beta headers like `context-1m-2025-08-07` and adjusting prompts to address known behavioral differences.

What prompt adjustments are needed for Claude Opus 4.5?▼

Prompt adjustments for Claude Opus 4.5 mitigate known behavioral differences such as tool overtriggering, over-engineering, code exploration, and frontend design. Specific instructions and code snippets are provided to guide these prompt modifications for optimal performance.

Can I use Claude Opus 4.5 on AWS Bedrock and Google Vertex AI?▼

Yes, Claude Opus 4.5 is supported on AWS Bedrock, Google Vertex AI, and Azure AI Foundry. The migration process involves updating outdated model identifiers with the correct Opus 4.5 model strings specific to each of these platforms.

Why does my Claude Opus 4.5 migration fail with beta headers?▼

Claude Opus 4.5 migration fails with beta headers because certain headers like `context-1m-2025-08-07` are unsupported and deprecated. Removing these incompatible beta headers from your API requests ensures successful integration and operation.

When do I need to update model strings for Claude Opus 4.5?▼

You need to update model strings for Claude Opus 4.5 when upgrading from older Claude versions like Sonnet 4.0, Sonnet 4.5, or Opus 4.1. This ensures compatibility and allows you to leverage the new model capabilities across your application.

What is the correct model string for Claude Opus 4.5?▼

The correct model string for Claude Opus 4.5 is `claude-opus-4-5-20251101`. Replacing outdated model identifiers with this specific string across Anthropic API, AWS Bedrock, Google Vertex AI, and Azure AI Foundry platforms enables the migration.

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