Claude Sonnet 5.5 vs Gemini 3.7 Flash

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

Higher intelligence
Claude Sonnet 5.5
Anthropic
56
Intelligence Index
View Claude Sonnet 5.5
Gemini 3.7 Flash
Google
39.6
Intelligence Index
View Gemini 3.7 Flash

Capability profile

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

Head to head

Claude Sonnet 5.5
Gemini 3.7 Flash
Intelligence
56
39.6
Coding
—
71.5
Math
—
—
Context window
1,000,000
1,048,576
Output price
$10/1M
$3.75/1M
Input price
$2/1M
$0.75/1M
Speed (t/s)
144
0
Knowledge cutoff
2026-06
2026-03
Open weights
No
No
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