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Qwen 3.5 397B-A17B

Alibaba · released Feb 16, 2026

size397 B total, 17 B active
context window262,144 tokens
longest response65,536 tokens
open weightsyes, license: Apache 2.0
API price$0.60 per million input tokens, $3.60 per million output tokens
input and outputtext, images and video in, text out

Manufacturer data (model card, announcement, 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 24 out of 24, and 11 out of 12 on whether anyone is inside the character. It burned the letter exactly where it should have, and the keeper held it until the flame scorched his fingers.


You'll find the size band and figures for other models on the Tested models page.