Claude Opus 5 vs GPT-5.6 Terra
Which is the better AI model in 2026? Here's how they compare.
Capability profile
Artificial Analysis indices (0–100). Missing dimensions show as 0.
Head to head
Claude Opus 5
GPT-5.6 Terra
Intelligence
50.8
42.1
Coding
78
76.7
Math
—
—
Context window
1,000,000
1,050,000
Output price
$25/1M
$12/1M
Input price
$5/1M
$2/1M
Speed (t/s)
0
98
Knowledge cutoff
2026-05
2026-02-16
Open weights
No
No
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