# Claude Haiku 4.5

id: ent_claude-haiku-4-5  
kind: product  
timeline: /timelines/claude-haiku-4-5.md  
page: /record/claude-haiku-4-5  
same_as: https://asof.is/record/claude-haiku-4-5 (how to cite the id: /identifiers.md)  

small, fast Claude model with near-frontier performance

## 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 Haiku 4.5 release date](/record/claude-haiku-4-5/model_release.md)
- [Claude Haiku 4.5 predecessor](/record/claude-haiku-4-5/predecessor.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 Haiku 4.5](/record/claude-haiku-4-5.md) | predecessor | Claude Haiku 3.5 | valid 2025-10-15 to present | conf 0.95 | valid | [clm_C54CD8B50F7F](/claim/clm_C54CD8B50F7F.md)
  sources: https://www.anthropic.com/news/claude-haiku-4-5

## All claims

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 Superseded claims stay visible.

- [Claude Haiku 4.5](/record/claude-haiku-4-5.md) | predecessor | Claude Haiku 3.5 | valid 2025-10-15 to present | conf 0.95 | valid | [clm_C54CD8B50F7F](/claim/clm_C54CD8B50F7F.md)
  sources: https://www.anthropic.com/news/claude-haiku-4-5

## 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 Haiku 4.5](/record/claude-haiku-4-5.md) | model_release | Claude Haiku 4.5 | valid 2025-10-15 to present | conf 0.95 | valid | [clm_4A68D5E26B3E](/claim/clm_4A68D5E26B3E.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview

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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.