Gemini 4 Argon writes up to 1M tokens per response, but almost nobody can use it yet

lmoroney · x · 2026-10-01

Google announced Gemini 4 Argon, a frontier model that can output up to 1 million tokens per response (up from 64K), with no size or input-context disclosures. Google claims internal agents use it to migrate C/C++ codebases to Rust — from tens of thousands of lines up to 800K+ lines of the Fuchsia Zircon kernel — and replaced 32K lines of SIMD in libgav1's Rust port, claiming a 2.7x faster memory-safe decoder. Laurence Moroney notes it's rolling out to security teams first, urges caution on vendor benchmarks, and explains how to prepare today for long-running agents.

Related event: Google Launches Frontier Model Gemini 4 Argon(42 posts)→

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