Google made Gemini 4 Argon generally available on October 13, two weeks after a limited launch that had confined access to cyber defenders in its Fairwind program and to trusted testers. Argon now ships through the paid Gemini API, AI Studio, Google AI Pro and Ultra in the Gemini app, AI Mode in Search, and the Ultra tier of the Antigravity coding environment, with a unified one-million-token input and output limit. Introductory pricing is $2 per million input tokens and $10 per million output tokens, rising to $4 and $20 after the promotional window, with a 95 percent discount on cached input.
The headline number is the independent Vals Index, where Argon sits first of 41 models at 68.9 percent, against 67.0 percent for Claude Sonnet 5.5 and 67.0 percent for Claude Opus 5.5, and 61.2 percent for GPT-6.1 Sol. At list price Vals puts Argon at about $15.68 per index task, roughly a quarter cheaper than Sonnet 5.5 and about half the cost of Opus 5.5. On sub-benchmarks it leads Finance Agent version two at 65.4 percent and places second on CyberBench at 77.9 percent, while Sonnet 5.5 narrowly beats it on Vibe Code Bench. Google's own figures, which have not been independently reproduced, include 77.9 percent on DeepSWE version 1.1, 87 percent on the ERQA embodied-reasoning benchmark, and a 0.7 percent attack-success rate on Gray Swan's indirect prompt-injection benchmark. Latent Space notes that third-party evaluations such as CursorBench have so far largely confirmed Google's claims.
Google paired the release with deployment stories rather than new architecture details. Chromium engineers are running multiple Argon agents in parallel to refactor parts of a decades-old codebase, with every change gated by the test suite and human review. Isomorphic Labs uses its multimodal reading to turn dense chemistry patents into structured reports in an afternoon rather than a month. In shadow A/B testing at Wiz, Argon found more than twice as many vulnerabilities as baseline models, including a file-download bypass and an exposed master key in healthcare software.
The caveats are familiar. Argon's lead on the composite index is about two points, inside the range where task mix and caching assumptions matter, and Vals tested at a 262,000-token output cap rather than the advertised one million. The cyber strength that sells the model is the same capability that triggered Google's strongest safeguards to date, covered in its separate safety report. Still, general availability at this price point puts a top-ranked long-horizon model in front of ordinary API customers, and it resets the cost-per-task comparison that enterprise buyers are now using to choose between frontier labs.
- Google DeepMind Blog: positions Argon for hard multi-step work across coding, finance, legal, cyber and science, with mostly self-reported results.
- Latent Space: says GA follows a preview two weeks earlier and independent benchmarks like CursorBench largely confirm Google's claims.
- DeepMind (YouTube): emphasizes deployments — Chromium codebase untangling, chemistry patent auditing at Isomorphic, and Wiz cyber-defense testing.