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Compare AI models: Claude Opus 5.5 vs DeepSeek V4 Flash

  1. Claude Opus 5.5AnthropicHollow points use fallbacks · hover for details
  2. DeepSeek V4 FlashDeepSeek
ReasoningCodingCost efficiencyContext windowMultimodalTool use
Normalized model capability scores
ModelReasoningCodingCost efficiencyContext windowMultimodalTool use
Claude Opus 5.5100/10075/1008/10081/10050/10050/100 — Tool calling supported; no comparable benchmark
DeepSeek V4 Flash26/10073/10054/10081/1000/1000/100
Overview
Author
Context length
1M
1M
Reasoning
True
True
Input modalities
Text, Image, Pdf
Text
Output modalities
Text
Text
Providers
Pricing
Input
$4.00/ 1M
$0.44/ 1M
Output
$20/ 1M
$1.32/ 1M
Cached input
Unknown
Unknown
MomentumLast 2 mo
Unique users
1
952K
Completed sessions
2
13,931,186
Token share
0%
3.17%
Tokens
20M+100%
44T-85%
SEP 15NOV 9
SEP 15NOV 9
RetentionWeek 1
Returning users
Pending
57.9%59K user-weeks

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