Claude 2 vs GPT-4.5
Compare Claude 2 by Anthropic against GPT-4.5 by OpenAI, context windows of 100K vs 128K, tested across 1 shared challenge.
Our Verdict
GPT-4.5
Claude 2Runner-up
No community votes yet. On paper, GPT-4.5 has the edge — bigger model tier, newer.
Claude 2 is 4.6x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude 2
Input
$11.02
6.8× cheaper
Output
$32.68
4.6× cheaper
GPT-4.5
Input
$75.00
Output
$150.00
Claude 2 is cheaper on both — 6.8× input, 4.6× output
Writing DNA
Style Comparison
Similarity
51%
GPT-4.5 uses 56.5x more hedging
Claude 2
GPT-4.5
65%Vocabulary63%
13wSentence Length16w
0.00Hedging0.57
0.0Bold4.7
10.2Lists6.4
0.00Emoji0.00
0.00Headings1.30
0.00Transitions0.54
Based on 2 + 11 text responses
Research
What we learned reading every model
FAQ
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