Claude 3 Haiku vs GPT-5 Pro
Compare Claude 3 Haiku by Anthropic against GPT-5 Pro by OpenAI, context windows of 200K vs 400K, tested across 41 shared challenges.
Our Verdict
GPT-5 Pro
Claude 3 HaikuRunner-up
No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window.
Claude 3 Haiku is 96x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude 3 Haiku
Input
$0.25
60× cheaper
Output
$1.25
96× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
Claude 3 Haiku is cheaper on both — 60× input, 96× output
Writing DNA
Style Comparison
Similarity
58%
Claude 3 Haiku uses 34.3x more bold
Claude 3 Haiku
GPT-5 Pro
50%Vocabulary65%
22wSentence Length15w
0.71Hedging0.32
0.3Bold0.0
5.9Lists2.9
0.00Emoji0.00
0.00Headings0.00
0.08Transitions0.01
Based on 13 + 11 text responses
Research
What we learned reading every model
FAQ
