---
title: Claude Haiku 4.5
url: https://platform.claude.com/docs/ko/models/haiku-4-5/overview
description: "Claude Haiku 4.5 참조: 수명 주기 상태, 모든 플랫폼의 모델 ID, 컨텍스트 윈도우, 출력 한도, 가격 및 마이그레이션 리소스. Claude Haiku 4.5는 레거시 모델이며, Claude Haiku 5.5가 현재 Haiku 모델입니다."
---
**Legacy.** Released October 15, 2025.
Although Claude Haiku 4.5 is still available, you should consider migrating to Claude Haiku 5.5. [See Claude Haiku 5.5](https://platform.claude.com/docs/ko/models/haiku-5-5/overview) · [Migrate to Claude Haiku 5.5](https://platform.claude.com/docs/ko/models/haiku-5-5/migration-guide)
Model ID: `claude-haiku-4-5-20251001`
Context window: 200K tokens · Max output: 64K tokens · Input pricing: $1 / MTok · Output pricing: $5 / MTok
[Announcement](https://www.anthropic.com/news/claude-haiku-4-5)
## 현재 라인업과의 비교
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
| :---------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.1](https://platform.claude.com/docs/ko/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jun 2026 |
| [Claude Opus 5.5](https://platform.claude.com/docs/ko/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
| [Claude Sonnet 5.5](https://platform.claude.com/docs/ko/models/sonnet-5-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/ko/models/haiku-5-5/overview) | 1M | 128K | From $0.10 / $0.50 | Adaptive | `medium` | Jun 2026 |
| **Claude Haiku 4.5** (this model) | 200K | 64K | $1 / $5 | Extended | — | Feb 2025 |
* **Context:** 1M tokens is roughly 555k words or 2.5M Unicode characters on the current tokenizer (introduced with Claude Opus 4.7); models before it fit about 750k words in 1M tokens. 200k tokens is roughly 150k words.
* **Max output:** Synchronous Messages API limit. On the Message Batches API, Claude Opus 5.5, Claude Opus 5, Claude Sonnet 5.5, Claude Sonnet 5, Claude Haiku 5.5, Claude Opus 4.8, Claude Opus 4.7, Claude Opus 4.6, and Claude Sonnet 4.6 support up to 300k output tokens with the output-300k-2026-03-24 beta header.
* **Price / MTok:** Input / output, base price per million tokens. Batch API requests are 50% off; prompt caching reads cost 10% of the base input price (2.5% on Claude Fable 5.1 and Claude Mythos 5.1, 5% on Claude Opus 5.5 and Claude Sonnet 5.5). See Pricing for the full list.
* **Thinking:** Adaptive thinking lets the model decide how much to think, steered by effort. Extended thinking is the manual budget\_tokens mode on earlier models.
* **Default effort:** The effort parameter’s default on the Claude API. Models without a value don’t support the parameter.
* **Knowledge cutoff:** Reliable knowledge cutoff: the date through which the model’s knowledge is most extensive and reliable.
## 사양
### Model IDs
| Platform | Model ID |
| :-------------------------------------------------------------------------------------------------------------------- | :----------------------------------------- |
| Claude API | `claude-haiku-4-5-20251001` |
| Claude API alias | `claude-haiku-4-5` |
| [Amazon Bedrock](https://platform.claude.com/docs/ko/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-haiku-4-5` |
| [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/ko/build-with-claude/claude-on-amazon-bedrock-legacy) | `anthropic.claude-haiku-4-5-20251001-v1:0` |
| [Google Cloud](https://platform.claude.com/docs/ko/build-with-claude/claude-on-vertex-ai) | `claude-haiku-4-5@20251001` |
| [Microsoft Foundry](https://platform.claude.com/docs/ko/build-with-claude/claude-in-microsoft-foundry) | `claude-haiku-4-5` |
| [Claude Platform on AWS](https://platform.claude.com/docs/ko/build-with-claude/claude-platform-on-aws) | `claude-haiku-4-5` |
### Pricing
| Feature | Value |
| :------------------------------------------------------------------------------------- | :------------------------------- |
| Input | $1 / MTok |
| Output | $5 / MTok |
| [5m cache write](https://platform.claude.com/docs/ko/build-with-claude/prompt-caching) | $1.25 / MTok |
| [1h cache write](https://platform.claude.com/docs/ko/build-with-claude/prompt-caching) | $2 / MTok |
| [Cache read](https://platform.claude.com/docs/ko/build-with-claude/prompt-caching) | $0.10 / MTok |
| [Batch API](https://platform.claude.com/docs/ko/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/ko/about-claude/pricing)
### Capabilities
| Feature | Value |
| :-------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/ko/build-with-claude/context-windows) | 200K tokens |
| Max output | 64K tokens |
| [Thinking](https://platform.claude.com/docs/ko/build-with-claude/thinking) | Extended |
| [Default effort](https://platform.claude.com/docs/ko/build-with-claude/effort) | Not supported |
| Input → output | Text and images → text |
| Reliable knowledge cutoff | Feb 2025 |
| Training data cutoff | Jul 2025 |
### Availability
| Feature | Value |
| :---------------------------------------------------------------------------- | :--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [Status](https://platform.claude.com/docs/ko/about-claude/model-deprecations) | Active (legacy) |
| Released | October 15, 2025 |
| Retirement | Not sooner than October 15, 2026 |
| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/ko/build-with-claude/claude-in-amazon-bedrock), [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/ko/build-with-claude/claude-on-amazon-bedrock-legacy), [Google Cloud](https://platform.claude.com/docs/ko/build-with-claude/claude-on-vertex-ai), [Microsoft Foundry](https://platform.claude.com/docs/ko/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/ko/build-with-claude/claude-platform-on-aws) |
## 알아두면 좋은 점
* `claude-haiku-4-5`는 고정된 스냅샷 `claude-haiku-4-5-20251001`로 해석되는 편의용 별칭입니다. [모델 ID 및 버전 관리](https://platform.claude.com/docs/ko/about-claude/models/model-ids-and-versions)를 참조하세요.
* Claude Haiku 4.5는 적응형 사고가 아닌 수동 "extended thinking"(확장 사고)(`thinking.type: "enabled"`)를 사용합니다.
* [Models API](https://platform.claude.com/docs/ko/api/models/list)를 사용하여 한도와 기능을 프로그래밍 방식으로 조회하세요.
## 리소스
Claude Haiku 4.5에서 Claude Haiku 5.5로 전환할 때 달라지는 점입니다.
현재 Haiku 모델: 개요, 사양 및 리소스입니다.
Claude Haiku 4.5는 `budget_tokens`를 사용한 수동 확장 사고를 지원합니다.
## 참고 자료
Claude Haiku 4.5가 claude.ai 및 Claude 앱에서 사용하는 시스템 프롬프트입니다.
Claude Haiku 4.5의 안전성 평가 및 배포 결정 사항입니다.
배치 할인 및 프롬프트 캐싱 요금을 포함한 전체 가격표입니다.
모델 ID, 별칭, 고정된 스냅샷이 작동하는 방식입니다.
모든 Claude 모델의 수명 주기 상태 및 종료 약정입니다.
Claude Haiku 4.5는 InvokeModel Bedrock 통합 및 Bedrock 스타일 모델 ID를 통해서도 사용할 수 있습니다.