Claude Fable 5 vs Grok 4.6

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

Higher intelligence
Claude Fable 5
Anthropic
49.6
Intelligence Index
View Claude Fable 5
Grok 4.6
xAI
44.3
Intelligence Index
View Grok 4.6

Capability profile

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

Head to head

Claude Fable 5
Grok 4.6
Intelligence
49.6
44.3
Coding
76.5
76.8
Math
—
—
Context window
1,000,000
500,000
Output price
$50/1M
$6/1M
Input price
$10/1M
$2/1M
Speed (t/s)
0
81
Knowledge cutoff
—
2026-02-01
Open weights
No
No
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