GPT-4 vs OpenAI: GPT-5.6 Terra
Compare GPT-4 and OpenAI: GPT-5.6 Terra, both from OpenAI, context windows of 8K vs 1.1M, tested across 26 shared challenges.
Our Verdict
GPT-4
OpenAI: GPT-5.6 Terra
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
OpenAI: GPT-5.6 Terra is 4.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4
Input
$30.00
Output
$60.00
OpenAI: GPT-5.6 Terra
Input
$2.50
12× cheaper
Output
$15.00
4.0× cheaper
OpenAI: GPT-5.6 Terra is cheaper on both — 12× input, 4.0× output
Writing DNA
Style Comparison
Similarity
58%
OpenAI: GPT-5.6 Terra uses 112.3x more headings
GPT-4
OpenAI: GPT-5.6 Terra
59%Vocabulary57%
18wSentence Length18w
1.10Hedging0.85
0.8Bold2.8
2.5Lists4.6
0.00Emoji0.00
0.00Headings1.12
0.45Transitions0.06
Based on 15 + 27 text responses
Research
What we learned reading every model
FAQ
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