Claude Fable 5 vs Claude Opus 5

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

Claude Fable 5
Anthropic
49.6
Intelligence Index
View Claude Fable 5
Higher intelligence
Claude Opus 5
Anthropic
50.8
Intelligence Index
View Claude Opus 5

Capability profile

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

Head to head

Claude Fable 5
Claude Opus 5
Intelligence
49.6
50.8
Coding
76.5
78
Math
—
—
Context window
1,000,000
1,000,000
Output price
$50/1M
$25/1M
Input price
$10/1M
$5/1M
Speed (t/s)
0
0
Knowledge cutoff
—
2026-05
Open weights
No
No
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