GitHub[220K]Try OpenCode

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

  1. Qwen3.5 PlusAlibabaHollow points use fallbacks · hover for details
  2. DeepSeek V4 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 placeholder42/10081/10050/10050/100 — Tool calling supported; no comparable benchmark
DeepSeek V4 Flash26/10073/10082/10081/1000/1000/100
Overview
Author
Context length
1M
1M
Reasoning
True
True
Input modalities
Text, Image, Video
Text
Output modalities
Text
Text
Providers
Pricing
Input
$0.40/ 1M
$0.10/ 1M
Output
$2.40/ 1M
$0.20/ 1M
Cached input
$0.04/ 1M
$0.03/ 1M
MomentumLast 2 mo
Unique users
3.5K
1.9M
Completed sessions
18,633
26,702,359
Token share
0%
7.61%
Tokens
2.3B-91%
89T-67%
SEP 1OCT 26
SEP 1OCT 26
RetentionWeek 1
Returning users
Pending
63.1%139K user-weeks

Related comparisons. Other model pairs to check.