Google launches Gemini 4 Argon in Japan with up to 1 million-token context
Google introduced Gemini 4 Argon, its newest flagship reasoning model, for the Japanese market on October 14, 2026. The model can handle a shared context of about 1.04 million tokens and generate up to 65,536 tokens in a synchronous API call. Google markets Argon for tasks such as contract analysis, financial data synthesis, video summarisation, and multi‑step business automation, and it…
What you can do with it
AI at Work →Draft business reports in seconds, right inside Gemini
What you get You can generate sales charts and write meeting minutes.
Creates documents, presentations, and analyses from uploaded files or text prompts.
- Who for
- founders, operations and marketers
- Cost
- paid from ¥2,900
- Effort
- minutes
- Already included in
- AI Pro
Use it for
- Summarise contracts
- Generate sales charts
- Write meeting minutes
How to set it up · From the article
- Visit the Gemini website and sign in with your Google account.
- Choose the AI Pro or Ultra plan and select Gemini 4 Argon.
- Upload your documents or paste text, then ask the model to generate the desired output.
Watch out Only available in Japan for now
Key points from the news
- Gemini 4 Argon processes up to 1.04 million tokens total, with a max synchronous output of 65,536 tokens.
- Japanese pricing: AI Pro ¥2,900/month, AI Ultra from ¥14,500/month; API intro pricing $2 input/$10 output per million tokens until 30 Nov 2026.
- Benchmarks: Argon 68.9% Vals Index, 65.4% Vals Finance, 19.6% legal benchmark, outperforming GPT‑6 Astra and Claude Opus 5.5 in most categories.
Pricing in Japan starts at ¥2,900 per month for the AI Pro plan and ¥14,500 per month for AI Ultra, with a higher‑tier Ultra option at ¥32,000. API usage is billed separately: introductory rates until 30 Nov 2026 are $2 per million input tokens and $10 per million output tokens, rising to $4 and $20 respectively from 1 Dec 2026. Official benchmarks show Argon scoring 68.9% on the Vals Index, beating GPT‑6 Astra (63.1%) and Claude Opus 5.5 (67.0%), and achieving 19.6% on a legal benchmark, far above its rivals. The guide also offers ten copy‑paste prompts for immediate business use.
Model pages: GPT-6 Astra → · Claude Opus 5.5 →
The story so far
8 episodes →- Google launches Gemini 4 Argon in Japan with up to 1 million-token contextthis story
[2026 Latest] Gemini 4 Argon Complete Guide | Has it surpassed ChatGPT and Claude? The true power of Google's strongest AI and 10 practical prompts to transform your work
note.com · 20 October 2026
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