Claude Sonnet 5.5 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 Sonnet 5.5
GPT-5.6 Terra
Intelligence
56
42.1
Coding
—
76.7
Math
—
—
Context window
1,000,000
1,050,000
Output price
$10/1M
$12/1M
Input price
$2/1M
$2/1M
Speed (t/s)
130
108
Knowledge cutoff
2026-06
2026-02-16
Open weights
No
No
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