Gemini 4 Argon
Released on September 30, 2026
Changes from previous version
A new frontier generation above Gemini 3.8 Flash and Gemini 3.8 Flash Cyber. Output limit rises from 64K to 1M tokens. On Google's comparison table it leads DeepSWE v1.1 at 77.9% and ties GPT Astra 6 at 68% on CWE-bench v1. Fairwind is the current external path, with a published introductory price.
Release Summary
Google's frontier Gemini generation, rolling out first to trusted cyber defenders through the Fairwind Program. Scores 77.9% on DeepSWE v1.1 and 68.9% on the Vals Index, with a 1M-token context window and a 1M-token output limit, up from 64K. Introductory API price is $2/M input and $10/M output, with cached input at $0.10/M. A measured price per task at high effort is $1.99. After the introductory period the list price moves to $4/$20. Paid API, AI Studio, and consumer access are still ahead, and Google has not published an API model ID. Comparable frontier models: GPT Astra 6, Claude Opus 5.5, and Claude Fable 5.1.
Timeline
Gemini 4 Argon rolls out to Fairwind
Google announces Gemini 4 Argon and starts rollout to trusted cyber defenders through the Fairwind Program, ahead of paid API customers and Google AI Ultra subscribers.