GPT-3.5 Turbo vs GPT-5.6 Terra
Compare GPT-3.5 Turbo and GPT-5.6 Terra, both from OpenAI, context windows of 16K vs 1.1M, tested across 54 shared challenges.
Our Verdict
GPT-5.6 Terra
GPT-3.5 TurboRunner-up
No community votes yet. On paper, GPT-5.6 Terra has the edge — bigger model tier, newer, bigger context window.
GPT-3.5 Turbo is 7.5x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-3.5 Turbo
Input
$1.50
1.7× cheaper
Output
$2.00
7.5× cheaper
GPT-5.6 Terra
Input
$2.50
Output
$15.00
GPT-3.5 Turbo is cheaper on both — 1.7× input, 7.5× output
Writing DNA
Style Comparison
Similarity
49%
GPT-5.6 Terra uses 275.5x more bold
GPT-3.5 Turbo
GPT-5.6 Terra
61%Vocabulary57%
16wSentence Length18w
0.23Hedging0.85
0.0Bold2.8
3.7Lists4.6
0.00Emoji0.00
0.00Headings1.12
0.38Transitions0.06
Based on 11 + 27 text responses
Research
What we learned reading every model
FAQ
