Claude Sonnet 5.5 vs GPT-6 Astra
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-6 Astra
Intelligence
56
52.7
Coding
—
76.9
Math
—
—
Context window
1,000,000
1,050,000
Output price
$10/1M
$50/1M
Input price
$2/1M
$10/1M
Speed (t/s)
130
57
Knowledge cutoff
2026-06
2026-04-30
Open weights
No
No
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