Gemini 4 Argon: Built to solve your hardest problems

Google DeepMind has released Gemini 4 Argon, announced October 13, 2026, in a post by Koray Kavukcuoglu. The frontier model is available globally through the Gemini API and AI Studio, in Google Antigravity for AI Ultra subscribers, and in the Gemini app and AI Mode in Search for Ultra and Pro subscribers. Introductory pricing is $2 per million input tokens and $10 per million output tokens, with a 1 million unified input-output token limit. Google says it ranks first on the Vals Index, which covers sectors such as finance, coding, legal and tax work.

Google's examples lean on long, multi-step work. It reports that Argon in Antigravity raised agentic code submissions by more than 35% while cutting rollbacks by nearly a third, and helped refactor part of Chrome's codebase in weeks rather than months. Other claims include a 2.85x inference speedup for Gemma, a chromosomal rearrangement found by Gamow Labs that routine software had missed for years, new counterexamples to Grad's conjecture in fusion research, and five lab-confirmed enzyme designs. Wiz used early access to find security flaws affecting government and healthcare systems.

On safety, Google says external bio red teaming unlocked under 1% of tested sub-tasks, and that attack success on the Gray Swan prompt injection benchmark fell to 0.7%. Vetted defenders can apply to its Fairwind Program for access without cyber guardrails, and 10,000 scientists can win six months of top-tier Antigravity use for free.

The performance figures are Google's own or come from partners. The launch is pitched as the first of a wider Gemini 4 family.