Google rolls out Gemini 4 Argon to developers and paying subscribers, with a 1M-token limit
Google made Gemini 4 Argon, its latest frontier model, globally available through the Gemini API and to AI Pro and Ultra subscribers. Introductory API pricing is $2 per million input tokens and $10 per million output tokens until November 30.
Photo: Austin McKinley / Wikimedia Commons, CC BY 3.0. Gemini logo via Wikimedia Commons (public domain).
Google said on October 13 that Gemini 4 Argon is now globally available to developers and enterprises through the API in AI Studio and the Gemini platform, to Google AI Ultra subscribers in Google Antigravity, and to AI Ultra and Pro subscribers in the Gemini app and AI Mode in Search. In a post by Koray Kavukcuoglu, SVP of Google DeepMind and Google's chief AI architect, the company described Argon as built for deep, multi-step work in coding, finance, legal, cybersecurity and science.
The model launches at an introductory price of $2 per million input tokens and $10 per million output tokens, with cached input tokens 95% off. After the introductory period ends on November 30, 2026, the price rises to $4 per million input tokens and $20 per million output tokens. Google says the Gemini API gives Argon a 1 million-token unified input-output limit.
Google says Argon ranks first on the Vals Index, which measures performance in sectors such as finance, coding, legal and tax work. Among internal uses, it says Argon helped Chrome engineers separate a roughly 6 million-line legacy folder of browser features within Chromium's codebase, and delivered a 2.85x end-to-end inference speedup for its open Gemma 4 E2B model on an A100 via vLLM. It also says Argon in Antigravity helped teams raise agentic code submissions by more than 35% while cutting code rollbacks by nearly a third. These are Google's own figures.
On safety, Google says shortcut attempts on coding benchmarks fell to 2%, that an automated misalignment monitor reads the agent's reasoning and actions to catch and block unintended workarounds, and that Argon cut attack success on the Gray Swan indirect prompt injection benchmark to 0.7%. Cyber defenders can apply to Google's Fairwind Program for access to Argon without cyber guardrails, and the company is offering 10,000 scientists six months of Antigravity's highest usage tier free, subject to eligibility and capacity.