---
title: "Claude Haiku 3.5"
provider: "Anthropic"
modelId: "claude-3-5-haiku-20241022"
releaseDate: "2024-10-22"
trainingDataCutoff: "2024-07-31"
deprecationDate: "2025-12-19"
retirementDate: "2026-02-19"
bedrockEolDate: "2026-06-19"
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toolUse: true
systemCard: "https://assets.anthropic.com/m/1cd9d098ac3e6467/original/Claude-3-Model-Card-October-Addendum.pdf"
modelsDev: "https://models.dev/anthropic/claude-3-5-haiku-20241022"
announcement: "https://www.anthropic.com/news/3-5-models-and-computer-use"
---

# Claude Haiku 3.5

Canonical URL: https://ghost.fail/models/claude-haiku-3-5

Note: this page is a stub — metadata is present but content has not been written yet.

## Overview

**Claude 3.5 Haiku** is a large language model by Anthropic. It was released on October 22, 2025 alongside [Claude 3.6 Sonnet](/models/claude-sonnet-3-6).

On most of Anthropic's benchmarks, the model surpassed [Claude 3 Opus](/models/claude-opus-3).

## Research

## Training

Pretraining data was collected up to July 2024.

## Interpretability

- ["On the Biology of a Large Language Model"](https://transformer-circuits.pub/2025/attribution-graphs/biology.html) (Lindsey et al, Mar 27, 2025)
- ["Circuit Tracing: Revealing Computational Graphs in Language Models"](https://transformer-circuits.pub/2025/attribution-graphs/methods.html) (Ameisen et al, Mar 27, 2025)
- ["When Models Manipulate Manifolds: The Geometry of a Counting Task"](https://transformer-circuits.pub/2025/linebreaks/index.html) (Gurnee et al, Oct 21, 2025)