Google releases Gemini 4 Argon, its latest frontier model

Google released Gemini 4 Argon on October 13, 2026, and says it is available globally. Google's blog post was shared on Hacker News on October 20. The Gemini API changelog lists gemini-4-argon as generally available from October 13, describing it as Google's most capable model, built for complex coding, agentic, math and science tasks.

Availability (Google's account): developers and enterprises through the API in AI Studio and the Gemini platform; Google AI Ultra subscribers in Google Antigravity; Google AI Ultra and Pro subscribers in the Gemini app and in AI Mode in Search.

Price: an introductory $2 per million input tokens and $10 per million output tokens, with cached input tokens 95% cheaper.

Google's claims (from its own post, not independently verified):

• Argon ranks #1 on the Vals Index, which covers finance, coding, legal and tax work, and scores 87% on the ERQA embodied-reasoning benchmark.
• Inside Google, Argon in Antigravity increased agentic code submissions by more than 35% and cut code rollbacks by nearly a third.
• Google reports Argon-assisted work on a Chrome refactor, speedups to its ADK Python framework, the xTB quantum-chemistry package and Gemma inference on vLLM (2.85x on an A100), plus examples in cybersecurity, science and robotics.
• On safety, Google says shortcut attempts on coding benchmarks fell to 2% and that it added a multi-layer misuse defense and a misalignment monitor.

Other programs: Google is expanding access for cyber defenders to hundreds more Fairwind Program partners, and offering 10,000 scientists the highest Antigravity usage tier free for 6 months, subject to eligibility and selection.