Claude Opus 5.5 vs Mistral Small 4
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 5.5
Mistral Small 4
Intelligence
57.6
11.3
Coding
—
26.6
Math
—
—
Context window
1,000,000
256,000
Output price
$20/1M
$0.6/1M
Input price
$4/1M
$0.15/1M
Speed (t/s)
97
172
Knowledge cutoff
2026-06
2025-06
Open weights
No
Yes
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