Claude Haiku 4.5 vs GPT-5.6 Sol
Compare Claude Haiku 4.5 by Anthropic against GPT-5.6 Sol by OpenAI, context windows of 200K vs 1.1M, tested across 53 shared challenges.
Our Verdict
GPT-5.6 Sol
Claude Haiku 4.5Runner-up
No community votes yet. On paper, GPT-5.6 Sol has the edge — bigger model tier, newer, bigger context window.
Claude Haiku 4.5 is 6.0x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
5.0× cheaper
Output
$5.00
6.0× cheaper
GPT-5.6 Sol
Input
$5.00
Output
$30.00
Claude Haiku 4.5 is cheaper on both — 5.0× input, 6.0× output
Writing DNA
Style Comparison
Similarity
54%
Claude Haiku 4.5 uses 6.2x more emoji
Claude Haiku 4.5
GPT-5.6 Sol
61%Vocabulary63%
47wSentence Length15w
0.64Hedging0.79
5.1Bold3.4
6.3Lists3.8
0.20Emoji0.03
2.46Headings0.95
0.17Transitions0.08
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
