Claude Opus 5 vs Grok 4.5
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
Grok 4.5
Intelligence
44.2
38.8
Coding
—
72.4
Math
—
—
Context window
1,000,000
500,000
Output price
$25/1M
$6/1M
Input price
$5/1M
$2/1M
Speed (t/s)
50
0
Knowledge cutoff
2026-05
—
Open weights
No
No
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