GPT-5.6 Luna vs GPT-5.6 Terra
GPT-5.6 Luna vs GPT-5.6 Terra compared on intelligence, speed, and cost. Try both models on Zo, the always-on AI computer that does real work for you.
Intelligence
Tievs
Speed
Tievs
Cost
GPT-5.6 Luna is cheapervs
How to read this
Intelligence comes from SWE-bench Verified, the coding benchmark used by the model picker. Speed means the model is fast enough for the picker threshold. Cost shows the relative tier across Zo models: green is cheaper, amber is pricier.
Model details
1.1M tokens
Context
1.1M tokens
Feb 2026
Knowledge
Feb 2026
Jul 2026
Released
Jul 2026
$1.00/1M
Input
$2.50/1M
$6.00/1M
Output
$15.00/1M
Both GPT-5.6 Luna and GPT-5.6 Terra are available on Zo Computer. Try them both to see which one works best for your use case.