GPT-5.4 Mini vs OpenAI: GPT-5.6 Terra
Compare GPT-5.4 Mini and OpenAI: GPT-5.6 Terra, both from OpenAI, context windows of 400K vs 1.1M, tested across 53 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
GPT-5.4 MiniRunner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Terra has the edge — bigger model tier, newer, bigger context window.
GPT-5.4 Mini is 3.3x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5.4 Mini
Input
$0.75
3.3× cheaper
Output
$4.50
3.3× cheaper
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
GPT-5.4 Mini is cheaper on both — 3.3× input, 3.3× output
Writing DNA
Style Comparison
Similarity
75%
GPT-5.4 Mini uses 2.2x more bold
GPT-5.4 Mini
OpenAI: GPT-5.6 Terra
54%Vocabulary57%
20wSentence Length18w
0.72Hedging0.85
6.0Bold2.8
8.3Lists4.6
0.00Emoji0.00
2.11Headings1.12
0.04Transitions0.06
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
