Gemini 4 Argon at a glance.
From Google's own pages, read Oct 20, 2026, so company-reported. A token is a word or part of a word. Prices can change; check the maker's page before you build on them.
- Made by
- GoogleBased in US
- Released
- Sep 30, 2026Google blog: 'Gemini 4 Argon: our next era of frontier intelligence'
- What it is for
- “Our flagship reasoning model with a unified 1M context window and long decodes up to 1M tokens.”Gemini API docs: Models, Oct 19, 2026 · in Google's words
- Reads at once
- 1M tokensIts context window: how much text it can take in one go
- Takes in
- text, image, video, audio, pdf
- Download
- No, online only
$2per million tokens in$10per million tokens out
Introductory price
Introductory price through Nov 30, 2026; from Dec 1, 2026: $4 in / $20 out. Context caching $0.10 (then $0.20). Batch: $1 in / $5 out (then $2 / $10). No prompt-length tier listed. Not available on the free tier.
Gemini API docs: Pricing, Oct 20, 2026 · company-reported
Where it ranks.
Its position on each of the 21 tests the models page uses, by testers other than the maker. Epoch AI's and Vectara's scores are shown under their open licenses; for LMArena, Scale and Vals we give the position and link to their own leaderboard. Each list is a snapshot with its date.
| Test | Rank | Score |
|---|---|---|
| Epoch Capabilities IndexEpoch AI, Oct 20, 2026 | #5 | 164.6range 161.67 to 168.7 |
| Vals IndexVals AI, Oct 19, 2026 | #3 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena WebDevLMArena, Oct 19, 2026 | #10 | On LMArena |
| SWE-Bench ProScale AI, Sep 22, 2026 | #2 | On Scale AI |
| Vibe Code BenchVals AI, Oct 18, 2026 | #2 | On Vals AI |
| LMArena coding chatsLMArena, Oct 15, 2026 | #1 | On LMArena |
| Test | Rank | Score |
|---|---|---|
| LMArena textLMArena, Oct 15, 2026 | #1 | On LMArena |
| LMArena creative writingLMArena, Oct 15, 2026 | #2 | On LMArena |
| MultiChallengeScale AI, Feb 3, 2026 | Not in the top 15 |
| Test | Rank | Score |
|---|---|---|
| LMArena Agent ArenaLMArena, Oct 19, 2026 | #6 | On LMArena |
| Remote Labor IndexScale AI | Not in the top 16 | |
| Terminal-Bench 4.0Vals AI, Oct 19, 2026 | #6 | On Vals AI |
| CUA-bench (games)Vals AI, Oct 13, 2026 | #8 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena mathLMArena, Oct 15, 2026 | #1 | On LMArena |
| Humanity's Last ExamScale AI | #3 | On Scale AI |
| ProofBenchVals AI, Oct 12, 2026 | #7 | On Vals AI |
| Test | Rank | Score |
|---|---|---|
| LMArena visionLMArena, Oct 19, 2026 | Not in the top 20 | |
| LMArena documentsLMArena, Sep 13, 2026 | Not in the top 20 |
| Test | Rank | Score |
|---|---|---|
| GPQA DiamondVals AI, Sep 1, 2026 | Not in the top 20 | |
| MMMU ProVals AI, Sep 1, 2026 | Not in the top 20 |
| Test | Rank | Score |
|---|---|---|
| Vectara hallucination testVectara, Oct 16, 2026 | #83 | 12.1%made up facts in summaries; lower is better |
“Not in the top” means it isn't among the models in our copy of that list, which runs to the position shown; it may not have been tested. Vectara's test ranks by how rarely a model adds facts, so lower is better. Positions can be shared when scores tie. Epoch's range is its margin of uncertainty. Epoch AI and Vectara data: CC BY 4.0 and Apache-2.0.
What Gemini costs.
Google's chat app, priced by the month in US dollars on its own pages. Which plans include Gemini 4 Argon is on Google's pages.
Every chat app's plans| Plan | A month |
|---|---|
| Free | Free |
| Google AI Plus | $4.99 |
| Google AI Pro | $19.99 |
| Google AI Ultra | from $99.99 |
Google: Gemini subscriptions page, Oct 20, 2026 · company-reported
Our note: Announced 2026-09-30 with initial rollout to 'trusted cyber defenders'; Google's developer blog says developers could build with it 'Starting today' on 2026-10-13 via the paid tier of the Gemini API. Output limit 65,536 by default, up to 1,048,576 with long decode (model page).