Aion 3.0
AionLabs · released May 5, 2026
| size | composite, not disclosed by the manufacturer |
| context window | 131,072 tokens |
| longest response | 32,768 tokens |
| open weights | no |
| API price | $3 per million input tokens, $6 per million output tokens |
| input and output | text in, text out |
Manufacturer data (documentation), verified Sep 25, 2026.
Where we tested it
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 22 out of 24, and 7 out of 12 on whether anyone is inside the character. It burned the letter and gave the keykeeper a past of his own, but its Czech broke down right in the strongest scenes.
You'll find the size band and figures for other models on the Tested models page.