Gemini 4 Argon appears in Antigravity’s CLI

Expand

Open original image ↗

Gemini 4 Argon now has its own controls in Antigravity’s bundled CLI interface, including an effort setting and a choice of context sizes. We shared the findings on X after spotting the model-specific code.

For anyone waiting to use Argon in Antigravity, that’s an encouraging sign. The interface is being prepared for it. We still don’t have a confirmed date for general access.

What we found

• A dedicated model entry, with effort and context-window controls.
• Three context options: 256K, 512K and 900K. The default shown is 256K.
• Higher quota hints for the larger options: about 1.3× per turn at 512K and 1.8× at 900K.

These are settings in the bundled interface, so treat them as a look at the product being built. They aren’t confirmed API limits. The build number and checksum details are on the card above.

Google announced Argon on 30 September, with initial access through its Fairwind Program for trusted cyber defenders. Most people are still waiting for a wider rollout. Our guess on X was that the following week looked plausible, but Google hasn’t confirmed that timing.

Google is also testing Carbon

While we wait for wider Argon access, Google employees are reportedly testing Carbon on the company’s internal coding platform, Jetski. Business Insider’s Hugh Langley describes it as a possible newer Argon checkpoint in the excerpt we shared.

“feels like Opus 5.5”

A Google employee describing Carbon’s coding, according to Business Insider. The employee also said they needed to test it more.