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  1. Models
  2. Text
  3. Anthropic

Claude Fable 5

Anthropic Claude Fable 5 for long-running coding, research, and knowledge-work tasks. Anthropic retains prompts and outputs for 30 days under its Covered Models policy; Zero Data Retention is not available.

  • Reasoning
  • Vision
  • Native PDF input
  • Tool Calling
  • Structured Output

Added Jun 9, 2026

Pricing

Auto routing · per 1M tokens
Input
$10.00
Output
$50.00
Cache read
$1.00
Compare provider prices

Specifications

Context window
1M
Max output
128K
Avg output (7d)
783 tokens
Longer than 65% of models

Benchmarks

Sourced from Artificial Analysis.

Coding Index

76.5

Coding Index: 76.5
Better than 95% of models compared

Agentic Index

50.7

Agentic Index: 50.7
Better than 92% of models compared

Agentic work

AutomationBench-AA

Workflow automation with guardrail penalties

54.1%

Better than 70% of models compared

AutomationBench-AA Tasks Completed

Fully completed workflows without guardrail violations

24.7%

Better than 72% of models compared

AA-Briefcase v1.1

Agentic knowledge work (Elo)

1535 Elo

Better than 88% of models compared

GDPval-AA v2.1

Economically valuable tasks (Elo)

1618 Elo

Better than 90% of models compared

Document reasoning

GDP.pdf

Professional PDF reasoning: all-pass rate

24.0%

Better than 81% of models compared

AA-LCR v1.1

Long context reasoning with updated grading

82.3%

Better than 92% of models compared

MLCR-AA

Medical long-context reasoning

20.6%

Better than 73% of models compared

Reasoning

HLE

Humanity's Last Exam

55.5%

Better than 99% of models compared

IFBench

Instruction-following benchmark

63.5%

Better than 74% of models compared

CritPt

Research-level physics reasoning

28.6%

Coding

Terminal-Bench v4.0

Practical coding and terminal tasks

42.4%

Better than 87% of models compared

SciCode

Python programming for scientific computing

61.0%

Better than 97% of models compared

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

92.6%

Better than 94% of models compared

Terminal-Bench Hard (legacy)

Agentic coding and terminal use

62.9%

Better than 99% of models compared

T²-Bench Telecom (legacy)

Conversational AI agents in dual-control scenarios

98.5%

Better than 99% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

82.3%

Better than 92% of models compared

GDPval-AA (unversioned / legacy)

Economically valuable tasks

55.9%

Last updated Oct 30, 2026

Artificial Analysis

Providers

Auto routing is available for this model. Explicit provider selection is not available.

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Reliability

Related text models

Compare Claude Fable 5 with similar models from the same provider or model family.

Claude Fable 5.1

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Claude Fable 5.1 improves on Fable 5 across agentic coding, long-running workflows, front-end and visual code generation, finance, analysis, and knowledge work, with more concise plans and summaries. Anthropic retains prompts and outputs for 30 days; Zero Data Retention is not available.

Claude Fable Latest

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Compatibility alias for Claude Fable 5.1. Anthropic retains prompts and outputs for 30 days under its Covered Models policy; Zero Data Retention is not available.

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Claude Sonnet 5.5 Thinking

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Claude Opus 5.5

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Claude Opus 5.5 is Anthropic's flagship model for agentic coding, computer use, complex knowledge work, and long-running tasks, with improved efficiency and more natural communication.