Model Comparator

Compare up to four models using the same criteria.

Claude Fable 5 (Max, Opus 4.8 Fallback)
Anthropic
Claude Fable 5.1 (Max, Default Fallback)
Anthropic

Differences only

✓ Best published value among measured models. — Data unavailable. These metrics do not establish an overall ranking.

Model Comparator
Metrics	Claude Fable 5 (Max, Opus 4.8 Fallback) Anthropic	Claude Fable 5.1 (Max, Default Fallback) Anthropic
Intelligence	Best: 49.6	49.2
Coding	76.5	Best: 80.7
Agentic	50.7	Best: 57.2
Cyber Index	—	25.0%
Speed	63.2 t/s	Best: 69.5 t/s
TTFT	Best: 108 s	252 s
Input · $ / 1M tokens	$10	$10
Output · $ / 1M tokens	$50	$50
Context window	1M	1M
Reasoning	Yes	Yes
Open weights	No	No
Cost / task	Best: $8.75	$12.99×1.5 relative to the lowest price among the compared models

Intelligence

Claude Fable 5 (Max, Opus 4.8 Fallback): Best: 49.6
Claude Fable 5.1 (Max, Default Fallback): 49.2

Coding

Claude Fable 5 (Max, Opus 4.8 Fallback): 76.5
Claude Fable 5.1 (Max, Default Fallback): Best: 80.7

Agentic

Claude Fable 5 (Max, Opus 4.8 Fallback): 50.7
Claude Fable 5.1 (Max, Default Fallback): Best: 57.2

Cyber Index

Claude Fable 5 (Max, Opus 4.8 Fallback): —
Claude Fable 5.1 (Max, Default Fallback): 25.0%

Speed

Claude Fable 5 (Max, Opus 4.8 Fallback): 63.2 t/s
Claude Fable 5.1 (Max, Default Fallback): Best: 69.5 t/s

TTFT

Claude Fable 5 (Max, Opus 4.8 Fallback): Best: 108 s
Claude Fable 5.1 (Max, Default Fallback): 252 s

Input · $ / 1M tokens

Claude Fable 5 (Max, Opus 4.8 Fallback): $10
Claude Fable 5.1 (Max, Default Fallback): $10

Output · $ / 1M tokens

Claude Fable 5 (Max, Opus 4.8 Fallback): $50
Claude Fable 5.1 (Max, Default Fallback): $50

Context window

Claude Fable 5 (Max, Opus 4.8 Fallback): 1M
Claude Fable 5.1 (Max, Default Fallback): 1M

Reasoning

Claude Fable 5 (Max, Opus 4.8 Fallback): Yes
Claude Fable 5.1 (Max, Default Fallback): Yes

Open weights

Claude Fable 5 (Max, Opus 4.8 Fallback): No
Claude Fable 5.1 (Max, Default Fallback): No

Cost / task

Claude Fable 5 (Max, Opus 4.8 Fallback): Best: $8.75
Claude Fable 5.1 (Max, Default Fallback): $12.99×1.5 relative to the lowest price among the compared models

Each reasoning level remains a separate configuration.

Score and cost

Each line joins the reasoning levels of a compared model; the large point marks the configuration in the table. The top-right corner holds the best score for the lowest cost. Select another point to compare that level.

Claude Fable 5 (Max, Opus 4.8 Fallback)49.6 · $8.75
Claude Fable 5.1 (Max, Default Fallback)49.2 · $12.99