Claude Fable 5.1 vs Grok 4.7

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

Higher intelligence
Claude Fable 5.1
Anthropic
53.4
Intelligence Index
View Claude Fable 5.1
Grok 4.7
xAI
46.4
Intelligence Index
View Grok 4.7

Capability profile

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

Head to head

Claude Fable 5.1
Grok 4.7
Intelligence
53.4
46.4
Coding
81.6
Math
Context window
1,000,000
500,000
Output price
$50/1M
$6/1M
Input price
$10/1M
$2/1M
Speed (t/s)
67
50
Knowledge cutoff
2026-06
2026-05
Open weights
No
No
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