GPT-5.4 Now Generally Available

OpenAI's latest agentic coding model, GPT-5.4, is rolling out to GitHub Copilot users. Early testing shows the model achieves new success rates for real-world software development tasks, with enhanced logical reasoning and improved execution for complex, multi-step, tool-dependent processes.

Broad Platform Support

GPT-5.4 is available across a comprehensive set of development environments:

• IDE Support: Visual Studio Code (v1.104.1+), Visual Studio (17.14.19+), JetBrains (1.5.66+), Xcode (0.48.0+), and Eclipse (0.15.1+)
• Web & Mobile: github.com, GitHub Mobile (iOS/Android), and GitHub CLI
• Specialized Tools: GitHub Copilot Coding Agent

Users can select GPT-5.4 from the model picker in chat, ask, edit, and agent modes across supported platforms.

Availability & Enablement

The new model is available to Copilot Pro, Pro+, Business, and Enterprise subscribers. Enterprise and Business plan administrators must explicitly enable the GPT-5.4 policy in Copilot settings to grant access. GitHub recommends upgrading to the latest versions of each IDE and client for optimal prompting and model parameter support.

Next Steps

Visit the GitHub Copilot documentation to explore all available models and get started with GPT-5.4.