# Claude 2.1

id: ent_claude-2-1  
kind: product  
timeline: /timelines/claude-2-1.md  
page: /record/claude-2-1  
same_as: https://asof.is/record/claude-2-1 (how to cite the id: /identifiers.md)  

Claude 2 update with 200K token context window

## 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 2.1 release date](/record/claude-2-1/model_release.md)
- [Claude 2.1 predecessor](/record/claude-2-1/predecessor.md)
- [Claude 2.1 deprecation](/record/claude-2-1/deprecated.md)
- [Claude 2.1 retirement](/record/claude-2-1/retired.md)
- [Claude 2.1 context window](/record/claude-2-1/context_window.md)

## Current state

What the record asserts: claims that held, valid by their sources or primary-sourced at confidence 0.7 or more. Unverified, disputed, retracted and review-marked claims are listed below, labelled, not here.

- [Claude 2.1](/record/claude-2-1.md) | context_window | 200K token context window | valid 2023-11-21 to present | conf 0.95 | valid | [clm_EB2E8F209197](/claim/clm_EB2E8F209197.md)
  sources: https://www.anthropic.com/news/claude-2-1
- [Claude 2.1](/record/claude-2-1.md) | predecessor | Claude 2.0 | valid 2023-11-21 to present | conf 0.95 | valid | [clm_3BC5C78576BD](/claim/clm_3BC5C78576BD.md)
  sources: https://www.anthropic.com/news/claude-2-1

## All claims

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 Superseded claims stay visible.

- [Claude 2.1](/record/claude-2-1.md) | retired | claude-2.1 | valid 2025-07-21 to present | conf 0.95 | valid | [clm_88032FA366AC](/claim/clm_88032FA366AC.md)
  sources: https://platform.claude.com/docs/en/about-claude/model-deprecations
- [Claude 2.1](/record/claude-2-1.md) | deprecated | claude-2.1 | valid 2025-01-21 to present | conf 0.95 | valid | [clm_353889F4D96F](/claim/clm_353889F4D96F.md)
  sources: https://platform.claude.com/docs/en/about-claude/model-deprecations
- [Claude 2.1](/record/claude-2-1.md) | predecessor | Claude 2.0 | valid 2023-11-21 to present | conf 0.95 | valid | [clm_3BC5C78576BD](/claim/clm_3BC5C78576BD.md)
  sources: https://www.anthropic.com/news/claude-2-1
- [Claude 2.1](/record/claude-2-1.md) | context_window | 200K token context window | valid 2023-11-21 to present | conf 0.95 | valid | [clm_EB2E8F209197](/claim/clm_EB2E8F209197.md)
  sources: https://www.anthropic.com/news/claude-2-1

## Posts and Hugging Face repos (1)

Dated items from the entity's own feeds, and the days its Hugging Face repositories were created, newest first.

- [Claude 2.1](/record/claude-2-1.md) | model_release | Claude 2.1 | valid 2023-11-21 to present | conf 0.95 | valid | [clm_9B3815438148](/claim/clm_9B3815438148.md)
  sources: https://www.anthropic.com/news/claude-2-1

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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.