What does Claude Fable 5.1 cost?

Claude Fable 5.1 is priced at $50 output and $10 input (USD per 1M tokens)

How large is the context window of Claude Fable 5.1?

Claude Fable 5.1 has a 1M Tokens context window with up to 128K Tokens output.

Where can I access Claude Fable 5.1?

Official channels: Website and API platform.

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Anthropic

Claude Fable 5.1

AClosed

Anthropic的2026年9月更新，Fable 5的性能比Fable 5提升2倍以上（Frontier-Bench）。支持新的“自适应推理”模式，用于处理复杂的多步骤任务。Claude Max/Team Premium的默认模型。

API Pricing

Input

$10

Output

$50

Cached input

$0.25

Peak hours

—

USD / 1M tokens

※ Same price as Fable 5; Adaptive Reasoning mode available; Batch 50% off; cache hits $0.25/MTok (90% savings), cache write $12.5/MTok

Price sourceanthropic.com ↗

No price change in the last two snapshots

Price history

12 snapshots · 2026-04-28 → 2026-08-17

Current: $3.971Period low: $2.515 (2026-04-28)Period high: $3.971 (2026-07-01)First tracked: $2.515 (2026-04-28)

Specifications

Context window: 1M Tokens
Max output: 128K Tokens
License: Closed

Overall score

Total

60.3

Rank

#10

Tier

Data confidence

85%

Capability94

Scale35

Value28

Context60.5

Ecosystem21

Freshness77.8

Capabilities & use cases

Best for

大型代码库迁移与重构
长期自主智能体
复杂多步骤推理
金融建模
视觉多模态分析

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

Claude Sonnet 5.5 Claude Haiku 5.5 Claude Opus 5.5

FAQ

What does Claude Fable 5.1 cost?: Claude Fable 5.1 is priced at $50 output and $10 input (USD per 1M tokens)
How large is the context window of Claude Fable 5.1?: Claude Fable 5.1 has a 1M Tokens context window with up to 128K Tokens output.
Where can I access Claude Fable 5.1?: Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.