# Claude Fable 5.2

id: ent_claude-fable-5-2  
kind: model (product)  
timeline: /timelines/claude-fable-5-2.md  
page: /record/claude-fable-5-2  
same_as: https://asof.is/record/claude-fable-5-2 (how to cite the id: /identifiers.md)  

Fable model for demanding reasoning and long-horizon agentic work

## Fact pages

One page per fact: the current value with its sources, then every dated value and what replaced what. Fetch any of them as markdown.

- [Claude Fable 5.2 release date](/record/claude-fable-5-2/model_release.md)

## Models

- lineage: https://asof.is/models/claude.md
- family: claude · line: Fable (claude-fable)
- status: release not yet checked

## All claims

One claim per line, newest first. Superseded claims stay visible.

- [Claude Fable 5.2](/record/claude-fable-5-2.md) | model_release | Claude Fable 5.2 | valid 2026-11-09 to present | conf 0.70 | valid | [clm_C3B040A105E6](/claim/clm_C3B040A105E6.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview#2026-11-09, https://www.anthropic.com/claude-fable-and-mythos-5-2

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.