Claude Haiku 4.5 vs DeepSeek V4 Pro
Compare Claude Haiku 4.5 by Anthropic against DeepSeek V4 Pro by DeepSeek, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
DeepSeek V4 Pro
Claude Haiku 4.5Runner-up
No community votes yet. On paper, DeepSeek V4 Pro has the edge — bigger model tier, newer, bigger context window.
Slight edge
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
1.7× cheaper
Output
$5.00
DeepSeek V4 Pro
Input
$1.74
Output
$3.48
1.4× cheaper
Claude Haiku 4.5 wins input (1.7× cheaper)·DeepSeek V4 Pro wins output (1.4× cheaper)
Writing DNA
Style Comparison
Similarity
30%
Claude Haiku 4.5 uses 5.8x more emoji
Claude Haiku 4.5
DeepSeek V4 Pro
61%Vocabulary57%
47wSentence Length18w
0.64Hedging0.52
5.1Bold3.3
6.3Lists2.3
0.20Emoji0.04
2.46Headings0.45
0.17Transitions0.15
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
