google makes gemini 4 argon generally available in the gemini api

what happened

• Google announced Gemini 4 Argon on September 30, 2026, rolling it out first to trusted cyber defenders through its Fairwind Program and saying it was taking part in the US government's voluntary pre-release model access process.[1,5]
• The Gemini API release notes list gemini-4-argon as generally available on October 13, 2026.[2]
• The model page lists a 1,048,576-token context window, 65,536 output tokens by default (up to 1,048,576 with long decode), text, image, video, audio and PDF input, and text output.[3]
• Paid-tier pricing is $2 per million input tokens and $10 per million output tokens through November 30, 2026, rising to $4 and $20 from December 1, 2026; there is no free tier, and only implicit caching is supported.[4]
• Batch, Flex and Priority inference are listed as supported for the model.[3]
• Google says Argon's safeguards include refusing harmful cyber and CBRN requests, monitoring internal activations for misuse, adversarial training against indirect prompt injection, and monitoring chain-of-thought and actions to stop out-of-bounds behavior.[1]
• Google reports that Argon scored 77.9% on DeepSWE v1.1 and says it ranks first on Zapier's AutomationBench with a score of 51.3%.[1]