GPT-5.6 Terra vs Grok 4.7

Which is the better AI model in 2026? Here's how they compare.

GPT-5.6 Terra
OpenAI
42.1
Intelligence Index
View GPT-5.6 Terra
Higher intelligence
Grok 4.7
xAI
46.4
Intelligence Index
View Grok 4.7

Capability profile

Artificial Analysis indices (0–100). Missing dimensions show as 0.

Head to head

GPT-5.6 Terra
Grok 4.7
Intelligence
42.1
46.4
Coding
76.7
Math
Context window
1,050,000
500,000
Output price
$12/1M
$6/1M
Input price
$2/1M
$2/1M
Speed (t/s)
90
50
Knowledge cutoff
2026-02-16
2026-05
Open weights
No
No
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