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Compare AI models: Qwen3.5 Plus vs DeepSeek V4.1 Flash

  1. Qwen3.5 PlusAlibabaHollow points use fallbacks · hover for details
  2. DeepSeek V4.1 FlashDeepSeek
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Qwen3.5 Plus50/100 — Reasoning supported; no comparable benchmark50/100 — No data; neutral placeholder44/10081/10050/10050/100 — Tool calling supported; no comparable benchmark
DeepSeek V4.1 Flash100/100100/10064/10081/10033/10092/100
Overview
Author
Context length
1M
1M
Reasoning
True
True
Input modalities
Text, Image, Video
Text, Image
Output modalities
Text
Text
Providers
Pricing
Input
$0.40/ 1M
$0.17/ 1M
Output
$2.40/ 1M
$0.70/ 1M
Cached input
Unknown
$0.005/ 1M
MomentumLast 2 mo
Unique users
1.6K
4.3M
Completed sessions
16,969
114,366,256
Token share
0%
40.7%
Tokens
1.1B-96%
502T+100%
SEP 5OCT 30
SEP 5OCT 30
RetentionWeek 1
Returning users
Pending
69.2%413K user-weeks

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