This article is a technical explanation and implementation example generated using AI. Although the provided code and procedures are structured based on primary sources, the author has not verified the operation on actual devices. Operation may vary depending on the environment and version. To safely and practically understand the official information regarding the availability of Claude Opus 5.5 in GitHub Copilot, we organize the delivery platforms, subscription plans, billing structures, and text watermarks as a distinctive feature. We confirm the prerequisites for safely introducing and evaluating the new model in development sites and organizations.
Objective
The purpose of this article is to accurately interpret the specifications, available interfaces, and administrator policy settings regarding the integration of Claude Opus 5.5 into GitHub Copilot, based on the primary source, the GitHub Changelog. We clarify how this model is positioned and through which interfaces it can be selected for agentic coding, long-running tasks, and knowledge work.
Prerequisites and Notes
The content explained in this article is an organization of official announcements based on primary sources.
Because the rollout is gradual, it may not appear immediately depending on the user environment and organizational settings.
Since this is scheduled for verification in a Windows environment and has not been verified on actual devices, actual screen displays and API behaviors should be assumed based on official documentation and future verification environments.
Billing is usage-based according to the provider's list prices.
Key features of Claude Opus 5.5 confirmed from official information
According to primary sources, Anthropic's latest model, Claude Opus 5.5, has the following features:
Agentic coding and task processing: Can be utilized for agentic coding, long-running agent tasks, and knowledge work.
Efficiency and error resilience: In initial tests, it demonstrated task resolution capabilities equivalent to Claude Opus 5 while completing processes with significantly fewer steps and tokens. It also features the ability to quickly recover from errors in multi-step tasks.
Text watermarking: Claude Opus 5.5 embeds a watermark in text outputs. This watermark does not affect the meaning, quality, or readability of the output, nor does it incur additional tokens or costs.
Additionally, this model is subject to usage-based billing grounded in the provider's list prices, and users are advised to check detailed pricing on the GitHub Copilot models and pricing page.
Available plans and interfaces
Claude Opus 5.5 in GitHub Copilot is available across specific plans and various client environments and interfaces.
Eligible Plans
According to primary sources, users subscribed to the following plans are eligible.
Copilot Pro+
Max
Business
Enterprise
Available Interfaces and Tools
Users can select Claude Opus 5.5 from the model picker (model selection menu) in each environment. The environments with explicit support are listed below.
Visual Studio Code
Visual Studio
Copilot CLI
GitHub Copilot coding agent
GitHub Copilot app
github.com
GitHub Mobile (iOS / Android)
JetBrains IDEs
Xcode
Eclipse
flowchart TD
A[GitHub Copilot] --> B[Copilot Pro+ / Max / Business / Enterprise]
B --> C[モデルピッカー]
C --> D[VS Code / Visual Studio]
C --> E[Copilot CLI / 独自エージェント]
C --> F[github.com / Mobile]
C --> G[JetBrains / Xcode / Eclipse]
Administrator Policy Settings and Enablement Mechanism
When using Copilot within an organization, access is managed by the plan administrator.
Copilot Enterprise and Copilot Business: Administrators can manage access to Claude Opus 5.5 through model policies in the Copilot settings.
Default Enablement Behavior: Under the default model enablement configuration, new models are automatically enabled unless the administrator has turned off the global default or explicitly disabled this model.
From the perspective of organizational governance and cost management, it is recommended to check the policy settings in the management console before starting use.
Components and Key Points for Usage
When introducing Claude Opus 5.5 to a project or testing environment, you need to understand the following elements in advance.
Consideration for Phased Rollout: Since changes are not reflected immediately in all environments, if the model does not appear in the model picker, check again later.
Checking Plans and Billing: Verify in advance your Copilot plan (Pro+, Max, Business, Enterprise) and the scope of usage-based billing.
Watermark Specification: Generated text automatically includes a watermark, but since it has no adverse effect on quality or cost, it can be handled in the same way as regular text processing.
Conclusion
Based on the primary information from the GitHub Changelog, this article has summarized the specifications, usage environments, and administrator policy settings for Claude Opus 5.5 now available in GitHub Copilot.
The points and constraints to check before execution and deployment are as follows.
The rollout of this feature is phased, and depending on the environment, it may take some time for it to appear.
In organizational Copilot Business / Enterprise plans, availability is controlled by the administrator's model policy settings.
The billing structure is usage-based, grounded in the provider's list prices.
The content of this article is based on primary research and has not been verified on actual hardware. Please refer to the official documentation for the latest accurate information.
