GPT-3.5 Turbo vs GPT-5 Pro
Compare GPT-3.5 Turbo and GPT-5 Pro, both from OpenAI, context windows of 16K vs 400K, tested across 41 shared challenges.
Our Verdict
GPT-5 Pro
GPT-3.5 TurboRunner-up
No community votes yet. On paper, GPT-5 Pro has the edge — bigger model tier, newer, bigger context window.
GPT-3.5 Turbo is 60x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
10× cheaper
Output
$2.00
60× cheaper
GPT-5 Pro
Input
$15.00
Output
$120.00
GPT-3.5 Turbo is cheaper on both — 10× input, 60× output
Writing DNA
Style Comparison
Similarity
75%
GPT-3.5 Turbo uses 38.3x more transitions
GPT-3.5 Turbo
GPT-5 Pro
61%Vocabulary65%
16wSentence Length15w
0.23Hedging0.32
0.0Bold0.0
3.7Lists2.9
0.00Emoji0.00
0.00Headings0.00
0.38Transitions0.01
Based on 11 + 11 text responses
Research
What we learned reading every model
FAQ
Common questions
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