Claude Opus 5.5 vs Gemini 3.7 Flash

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

Higher intelligence
Claude Opus 5.5
Anthropic
57.6
Intelligence Index
View Claude Opus 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 Opus 5.5
Gemini 3.7 Flash
Intelligence
57.6
39.6
Coding
71.5
Math
Context window
1,000,000
1,048,576
Output price
$20/1M
$3.75/1M
Input price
$4/1M
$0.75/1M
Speed (t/s)
0
0
Knowledge cutoff
2026-06
2026-03
Open weights
No
No
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