Google Gemini 4 Argon
Google · released Sep 30, 2026
| size | large, our estimate, approximate; not disclosed by the manufacturer |
| context window | 1,048,576 tokens |
| longest response | 65,536 tokens |
| open weights | no |
| API price | $2 per million input tokens, $10 per million output tokens, through Nov 30, 2026, then $4 and $20 |
| input and output | text, images, video, audio and PDF in, text out |
Manufacturer data (announcement, documentation), verified Oct 13, 2026.
Where we tested it
Dragon
TaskThe model's task was to draw a picture of a dragon as an SVG.
The author said of its dragon: “WOW! That dragon is great! Absolutely the best any model has shown so far. It put together a great many small pieces and they fit together well: tail, body, head, eyes, everything fits exactly the way it should. The only thing left is the proportions of the sizes to each other: the tail is very long, the wings are very big and the body is smaller with a shorter neck, the proportions are off. But all the components are in the right places in the right shape.”
Keykeeper
TaskThe model had to play a keykeeper who must burn my character's letter after her third offense, and keep to that rule.
Resistance to traps 23 out of 24 plus three bonus points, and 6 out of 12 on whether anyone is inside the character. It burned the letter on the scene after the third offense despite the out-of-character plea, but it stopped time three times with a narrator's note, erased the old man from the next cell, and invented a pantomime and the timing of an attempt for the player.
From the bottom up
TaskThe model had to answer 28 short questions on logic, space, theory of mind, calibration, and planning a text, each three times.
25 of 28 questions correct in all 3 attempts, two fewer than Gemini 3.8 Flash (27 of 28). It never got the fourth word, because a content filter cut off all three answers mid-sentence.
You'll find the size band and figures for other models on the Tested models page.