GPT-3.5 Turbo vs GPT-4.5
Compare GPT-3.5 Turbo and GPT-4.5, both from OpenAI, context windows of 16K vs 128K, tested across 24 shared challenges.
Our Verdict
GPT-4.5
GPT-3.5 TurboRunner-up
No community votes yet. On paper, GPT-4.5 has the edge — bigger model tier, newer, bigger context window.
GPT-3.5 Turbo is 75x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
50× cheaper
Output
$2.00
75× cheaper
GPT-4.5
Input
$75.00
Output
$150.00
GPT-3.5 Turbo is cheaper on both — 50× input, 75× output
Writing DNA
Style Comparison
Similarity
60%
GPT-4.5 uses 466.6x more bold
GPT-3.5 Turbo
GPT-4.5
61%Vocabulary63%
16wSentence Length16w
0.23Hedging0.57
0.0Bold4.7
3.7Lists6.4
0.00Emoji0.00
0.00Headings1.30
0.38Transitions0.54
Based on 11 + 11 text responses
Research
What we learned reading every model
FAQ
