As of: 2026-10-13 22:23 CEST.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/p/2026-10-13-officiallogank-gemini-4-argon-rollout/

# Logan Kilpatrick: Gemini 4 Argon rolls out globally; tested by over 100,000 Googlers in the last month

Logan Kilpatrick (@OfficialLoganK), X, 2026-10-13.
Source: https://x.com/OfficialLoganK/status/2110038940841545827

## Why it matters

First-hand details from the Gemini API product lead: 100,000+ internal users, two weeks of Fairwind and early-access use, and a promise of fast iteration in the Gemini 4 line; about 95k views about 2.5 hours after posting (fxtwitter, Oct 13).

## Summary

Kilpatrick says Argon is rolling out in the Gemini API, to Pro and Ultra in the Gemini app, and to Ultra subscribers in Antigravity. He says it was 'battle tested by over 100,000 people at Google over the last month', that it went to Fairwind cyber defenders and early-access customers over the previous two weeks, and that 'this is just the start of the Gemini 4 era', pointing to the fast 3.5 to 3.8 Flash cadence. Verified via api.fxtwitter.com on 2026-10-13 (~18:40 CEST): 94848 views, 3139 likes, 276 reposts; posted Tue Oct 13 16:04:20 +0000 2026.

## Archived text

> Today we are rolling out Gemini 4 Argon globally in the Gemini API, to Pro + Ultra in Gemini App, and Ultra subs in Antigravity!
> 
> Argon is a huge step forward for Gemini, and a labor of love. This model has been battle tested by over 100,000 people at Google over the last month, with so much new innovation, ambition, and hard work baked into this release. The team has been heads down over the last 6 months working to make this possible across the stack (research, infra, safety, eng, etc).
> 
> We rolled the model out to cyber defenders as part of our fairwind program and early access customers over the last 2 weeks, it has been amazing to see and talk to folks who are now using this model daily. Seeing the models writing capability, raw knowledge and persistence for coding, paired with new features like 1M token output when the model needs to work more has gotten me even more excited about our path ahead.
> 
> This is just the start of the Gemini 4 era. As you saw with 3.5, 3.6, 3.7, and 3.8 Flash, our iteration speed with Gemini is fast : ) Now with Gemini 4 Argon to work from, I am cannot wait to see the progress continue, and most importantly see what this new model enables for the world. 
> 
> This is such a special moment in the arc of technology, as millions of people everyday tackle problems they could never have thought possible before. Gemini 4 Argon was built to help you tackle the hardest problems. I have personally felt this spark with Argon and hope you do too. Onwards!!

Archived 2026-10-13 via fxtwitter (unofficial).
Counts: 117,532 views, 3,589 likes, 300 reposts, 473 replies (at fetch time)

## Cited in

- 2026-10-13: [Google releases Gemini 4 Argon broadly](https://postcutoff.com/e/2026-10-13-gemini-4-argon-general-availability/)