GitHub Copilot: Gemini 4 Argon Now Generally Available
GitHub CopilotGitHub made Google's Gemini 4 Argon generally available in GitHub Copilot, aimed at complex coding, agentic and reasoning tasks. GitHub reports that in early testing the model solved more tasks than previous Gemini models on every coding benchmark, with its largest gains in Copilot CLI. It is available on Pro+, Max, Business and Enterprise plans across the major Copilot clients and is billed at provider list pricing under usage-based billing.
Key Takeaways
- Gemini 4 Argon is now generally available in GitHub Copilot, giving developers another frontier model option for complex coding and agentic work.
- GitHub reports that the model solved more tasks than previous Gemini models on every coding benchmark in early testing, with the biggest gains in Copilot CLI.
- GitHub says the model tests edge cases to check its own work before finishing, which may reduce back-and-forth corrections.
- It is available to Pro+, Max, Business and Enterprise users in VS Code, Visual Studio, Copilot CLI, the coding agent, the Copilot app, JetBrains, Xcode and Eclipse.
- Usage is billed at provider list pricing under usage-based billing, and no premium request multiplier is stated in the announcement.
- Business and Enterprise admins control access through the model policy, and new models are enabled by default unless the global default or this model has been disabled.
Gemini 4 Argon Arrives in GitHub Copilot
GitHub announced that Google's Gemini 4 Argon is now generally available in GitHub Copilot. The model is positioned for demanding work: complex coding problems, agentic workflows that run across many steps, and tasks that need sustained reasoning. Developers can pick it from the model picker like any other Copilot model.
What GitHub Saw in Early Testing
According to GitHub, Gemini 4 Argon solved more tasks than earlier Gemini models on every coding benchmark GitHub ran in early testing. The largest improvements showed up in Copilot CLI, where the model works agentically in the terminal, planning changes, editing files and running commands over many turns. GitHub also noted that the model tends to check its own work by testing edge cases before it finishes a task, which can reduce the number of follow-up corrections a developer needs to make.
These results come from GitHub's own early evaluation, so they describe how the model performs inside Copilot rather than serving as an independent benchmark.
Where and How to Use It
Gemini 4 Argon is available to Copilot Pro+, Max, Business and Enterprise users. It can be selected in the model picker in several places:
- Visual Studio Code
- Visual Studio
- Copilot CLI
- GitHub Copilot coding agent
- The GitHub Copilot app
- JetBrains IDEs
- Xcode
- Eclipse
GitHub is rolling the model out gradually, so some users may not see it right away. Those who do not yet see it in their picker are advised to check back soon.
Pricing
The model is billed at provider list pricing under Copilot's usage-based billing. GitHub's models and pricing documentation has the details. The announcement does not state a premium request multiplier.
Admin Controls for Business and Enterprise
On Business and Enterprise plans, administrators manage access through the model policy in Copilot settings. Under default model enablement, new models are turned on automatically unless an administrator has switched off the global default or explicitly disabled this specific model. Organizations that want to review new models before developers can use them should check that setting.
Feedback
GitHub points users to its documentation on supported models and to the GitHub Community Copilot discussions for questions and feedback.