Claude Haiku 4.5 vs GPT-5.4 Mini
Compare Claude Haiku 4.5 by Anthropic against GPT-5.4 Mini by OpenAI, in 55 community votes, claude haiku 4.5 wins 53% of head-to-head duels, context windows of 200K vs 400K, tested across 53 shared challenges.
Reasoning: Claude Haiku 4.5 wins 76% of votes
Image Generation: GPT-5.4 Mini wins 60% of votes
Conversation: GPT-5.4 Mini wins 60% of votes
Web Design: GPT-5.4 Mini wins 100% of votes
Analysis: Claude Haiku 4.5 and GPT-5.4 Mini are tied
Our Verdict
Claude Haiku 4.5Winner
GPT-5.4 MiniRunner-up
Claude Haiku 4.5 has the edge overall. In 55 blind votes, Claude Haiku 4.5 wins 53% of the time.
Pick Claude Haiku 4.5 for Reasoning. Pick GPT-5.4 Mini for Web Design, Image Generation, Conversation.
Slight edge
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
Output
$5.00
GPT-5.4 Mini
Input
$0.75
1.3× cheaper
Output
$4.50
1.1× cheaper
GPT-5.4 Mini is cheaper on both — 1.3× input, 1.1× output
Writing DNA
Style Comparison
Similarity
65%
Claude Haiku 4.5 uses 20.4x more emoji
Claude Haiku 4.5
GPT-5.4 Mini
61%Vocabulary54%
47wSentence Length20w
0.64Hedging0.72
5.1Bold6.0
6.3Lists8.3
0.20Emoji0.00
2.46Headings2.11
0.17Transitions0.04
Based on 24 + 23 text responses
Research
What we learned reading every model
FAQ
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