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Claude Fable 5.1

Official information

Release date: Sep 1, 2026
Official model ID: claude-fable-5-1

Vendor source: Claude Fable 5.1
Identity verified: Sep 7, 2026

API pricing

Verification: Verified
Verified at: Oct 26, 2026, 06:10:01 GMT+8
Value benchmark tier: claude-fable-5-1-standard

Input / output per million tokens
Tier / region	Input / output · per MTok	Context pricing tier	Billing	Validity	Source
claude-fable-5-1-standard global	$10 / $50	No upper pricing tier	Standard online · Cache miss All day	Current	Official rates Oct 26, 2026, 06:10:01 GMT+8

Rankings by category

Overall

#1High 0.98

97.0

Overall — Source breakdown
Source	Percentile	Raw score	Config folding
Epoch AI	94.9	166.5	Single config
LiveBench	98.9	83.8	Single config
LMArena	97.1	1512.5	Single config

Cross-source percentile spread 4.0

Coding

#2High 0.76

95.3

Coding — Source breakdown
Source	Percentile	Raw score	Config folding
LiveBench	96.7	74.2	Single config
LMArenatext-coding	93.1	1530.9	Single config
· webdev	94.7	1742.5	Single config

Cross-source percentile spread 2.8

Agent

#3Medium 0.57

89.6

Agent — Source breakdown
Source	Percentile	Raw score	Config folding
LMArena	89.6	0.1	Single config

Reasoning

#2High 0.84

97.4

Reasoning — Source breakdown
Source	Percentile	Raw score	Config folding
LiveBench	96.7	94.3	Single config
LMArenatext-math	99.0	1532.3	Single config
· text-hard	97.1	1528.1	Single config

Cross-source percentile spread 1.3

Value

#43High 0.98

14.7

Aliases & configurations

claude-fable-5-1
claude-fable-5-1-max· max
claude-fable-5-1-max-effort· max effort

Methodology & data sources