GPT-5.4 is generally available in GitHub Copilot

Source: GitHub Changelog

GPT-5.4, OpenAI’s latest agentic coding model, is now rolling out in GitHub Copilot. In our early testing of real‑world, agentic, and software development capabilities, GPT‑5.4 consistently hits new rates of success. It also shows enhanced logical reasoning and task execution for intricate, multi‑step, tool‑dependent processes.

Availability in GitHub Copilot

GPT‑5.4 will be available to Copilot Pro, Pro+, Business, and Enterprise users.

You can select the model in the model picker for:

• Visual Studio Code version v1.104.1 and later (all modes: chat, ask, edit, agent)
• Visual Studio version 17.14.19 and later (all modes: agent, ask)
• JetBrains versions 1.5.66 and later (all modes: ask, edit, agent)
• Xcode versions 0.48.0 and later (all modes: ask, agent)
• Eclipse versions 0.15.1 and later (all modes: ask, agent)
• github.com
• GitHub Mobile (iOS and Android)
• GitHub CLI
• GitHub Copilot Coding Agent

Prompting and model parameters work best in the most recent versions of each product, so we highly encourage you to upgrade to the latest version.

Enabling access

Copilot Enterprise and Copilot Business plan administrators must enable the GPT‑5.4 policy in Copilot settings.

Learn more

• Explore all models available in GitHub Copilot: Documentation on available models
• Join the GitHub Community to share your feedback.