Claude Opus 4 5 Migration

Plugin Active

Migrate your code and prompts from Sonnet 4.x and Opus 4.1 to Opus 4.5.

1 Skill 0 MCPs

Purpose

To streamline the transition to Claude Opus 4.5 by automating code and prompt updates, reducing manual effort and potential errors.

Features

Migrates code and prompts to Opus 4.5
Updates model strings for various platforms
Removes unsupported beta headers
Suggests prompt adjustments for behavioral differences
Provides guidance on integration and effort parameters

Use Cases

When migrating a codebase to use Opus 4.5.
When updating API calls to reflect Opus 4.5 model strings.
When encountering issues with Opus 4.5 behavior and needing prompt adjustments.

Non-Goals

Migrating Haiku 4.5 models.
Performing complex code refactoring beyond model string and prompt updates.
Addressing issues unrelated to Opus 4.5 behavioral differences.

License

warning:License usabilityThe license is provided as a general terms of service link in LICENSE.md, not a specific SPDX identifier or dedicated LICENSE file, making its exact terms harder to ascertain programmatically.

Trust

warning:Issues AttentionThere are 9462 open issues and 22831 closed issues in the last 90 days, indicating a very low closure rate for a high volume of issues, suggesting slow maintainer responsiveness.

Installation

First, add the marketplace

/plugin marketplace add anthropics/claude-code

/plugin install claude-opus-4-5-migration@claude-code-plugins

Contains 1 extensions

Skill (1)

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.

Quality Score

79 /100

Analyzed 2 days ago

Trust Signals

Last commit3 days ago

GitHub owner anthropics

Stars123.1k

Websitecode.claude.com

Status

View Source

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