Gemini 4 Hydrogen is open to five GitHub Copilot plans

GitHub made Gemini 4 Hydrogen open to users of Copilot, its tool for code. Hydrogen is the latest Flash model from Google. It is for fast code work, tool use and work in many steps. Five plans include it: Pro, Pro+, Max, Business and Enterprise. GitHub gave no test results.

How it works

A user selects the model in the model picker of Visual Studio Code, JetBrains, Xcode, github.com and other tools. GitHub adds it to users in steps. Some users do not see it at this time.

The numbers

GitHub gave no number for Hydrogen. In its own launch, Google tells that it scores 51 on the Artificial Analysis Intelligence Index. Its larger model Argon scores 50. Google sets the cost at $1.50 for 1 million input tokens (small pieces of text) and $7.50 for 1 million output tokens.

What is not known

GitHub did not tell what one task costs in Copilot. It tells only that it bills at the price of the provider, with usage-based billing. On Business and Enterprise plans, an administrator controls access with the model policy. New models are on by default, unless an administrator turned this off.

Insight: A cheaper model reaches more plans

In October 2026, Gemini 4 Argon came to Pro+, Max, Business and Enterprise, but its plans did not include Pro. Hydrogen includes Pro, and Google tells that it scores above Argon. This reads as a push to make the fast, cheap model the first one that developers use. For leaders: the default can start the spend.