Claude Opus 4.8 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 4.8
GPT-5.6 Terra
Intelligence
41.8
42.1
Coding
74.3
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
2026-01
2026-02-16
Open weights
No
No
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