Google announced Gemini 4 Argon on September 30, 2026. Access is currently rolling out to a limited group of trusted cyber defenders in its Fairwind Program. Google says it will use their feedback before expanding access to developers, enterprises and consumers. Source
Who can use it now
The initial rollout serves teams working on defensive security, including finding and fixing software vulnerabilities. Google names paid API customers and Google AI Ultra subscribers as later groups in its rollout, but gives no firm date for their access. A developer planning a project around Argon should therefore check whether the model has actually appeared in the relevant account and product before treating the announcement as availability. Source
How to read the announced price
Google lists an introductory price of $2 per million input tokens and $10 per million output tokens. After that introductory period, the listed rates rise to $4 and $20 respectively. Tokens are units of text processed or produced by a model. These published rates describe pricing; they do not establish that any particular developer or subscriber can use the model today. Source
Google also presents benchmark results for extended software engineering work and defensive cybersecurity. Those figures are results described in Google’s announcement, rather than independent OYOPICK tests or a promise of the same performance in a reader’s workflow. For a purchasing decision now, the first practical question is whether the phased rollout has reached the intended account. Source