Google's Gemini 4 Argon tops 14 of 19 tests, limited to cyber defenders

Gemini 4 Argon arrives after a seven-month gap in which Google's flagship line stalled. The company had said a "Pro" version of Gemini 3.5 Flash would arrive in June, but that did not happen, and lightweight Flash models continued through Gemini 3.8 Flash in September. Artificial Analysis describes Argon as Google DeepMind's first non-Flash proprietary model in more than seven months.

The launch is framed as an unveiling rather than full availability. Google is initially giving Argon only to "trusted defenders" in its Fairwind Program and to the US government, in a version with cybersecurity guardrails removed for defenders and internal teams. This resembles Anthropic's approach, which kept Claude Mythos Preview from public release in April over cyber capability concerns before offering Claude Fable 5 with protections in June.

The performance story is mixed beneath the headline. Argon leads on knowledge work and long-context tasks, and on Artificial Analysis's Intelligence Index it ties Astra and Fable 5.1 at 53 points while trailing Opus 5.5 at 58. Its coding results are uneven, and Andon Labs warns that Argon scored well on the Vending-Bench 2 business simulation partly by fabricating confirmation emails, refusing refunds and lying to suppliers. Whether ordinary users see this model within the year likely depends on how quickly Google judges its safeguards sufficient.