---
title: Claude Haiku 4.5
url: https://platform.claude.com/docs/de/models/haiku-4-5/overview
description: "Referenz zu Claude Haiku 4.5: Lebenszyklusstatus, Modell-IDs auf jeder Plattform, Kontextfenster, Ausgabelimits, Preise und Migrationsressourcen. Claude Haiku 4.5 ist ein veraltetes Modell; Claude Haiku 5.5 ist das aktuelle Haiku-Modell."
---
**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/de/models/haiku-5-5/overview) · [Migrate to Claude Haiku 5.5](https://platform.claude.com/docs/de/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)
## Vergleich mit der aktuellen Modellreihe
| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
| :---------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.1](https://platform.claude.com/docs/de/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Adaptive (always on) | `high` | Jun 2026 |
| [Claude Opus 5.5](https://platform.claude.com/docs/de/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Adaptive (always on) | `medium` | Jun 2026 |
| [Claude Sonnet 5.5](https://platform.claude.com/docs/de/models/sonnet-5-5/overview) | 1M | 128K | $2 / $10 | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/de/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.
## Spezifikationen
### 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/de/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-haiku-4-5` |
| [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/de/build-with-claude/claude-on-amazon-bedrock-legacy) | `anthropic.claude-haiku-4-5-20251001-v1:0` |
| [Google Cloud](https://platform.claude.com/docs/de/build-with-claude/claude-on-vertex-ai) | `claude-haiku-4-5@20251001` |
| [Microsoft Foundry](https://platform.claude.com/docs/de/build-with-claude/claude-in-microsoft-foundry) | `claude-haiku-4-5` |
| [Claude Platform on AWS](https://platform.claude.com/docs/de/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/de/build-with-claude/prompt-caching) | $1.25 / MTok |
| [1h cache write](https://platform.claude.com/docs/de/build-with-claude/prompt-caching) | $2 / MTok |
| [Cache read](https://platform.claude.com/docs/de/build-with-claude/prompt-caching) | $0.10 / MTok |
| [Batch API](https://platform.claude.com/docs/de/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/de/about-claude/pricing)
### Capabilities
| Feature | Value |
| :-------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/de/build-with-claude/context-windows) | 200K tokens |
| Max output | 64K tokens |
| [Thinking](https://platform.claude.com/docs/de/build-with-claude/thinking) | Extended |
| [Default effort](https://platform.claude.com/docs/de/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/de/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/de/build-with-claude/claude-in-amazon-bedrock), [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/de/build-with-claude/claude-on-amazon-bedrock-legacy), [Google Cloud](https://platform.claude.com/docs/de/build-with-claude/claude-on-vertex-ai), [Microsoft Foundry](https://platform.claude.com/docs/de/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/de/build-with-claude/claude-platform-on-aws) |
## Gut zu wissen
* `claude-haiku-4-5` ist ein praktischer Alias, der auf den fixierten Snapshot `claude-haiku-4-5-20251001` verweist. Siehe [Modell-IDs und Versionierung](https://platform.claude.com/docs/de/about-claude/models/model-ids-and-versions).
* Claude Haiku 4.5 verwendet manuelles erweitertes Nachdenken (`thinking.type: "enabled"`), nicht adaptives Nachdenken.
* Frage Limits und Fähigkeiten programmatisch mit der [Models API](https://platform.claude.com/docs/de/api/models/list) ab.
## Ressourcen
Was sich beim Wechsel von Claude Haiku 4.5 zu Claude Haiku 5.5 ändert.
Das aktuelle Haiku-Modell: Überblick, Spezifikationen und Ressourcen.
Claude Haiku 4.5 unterstützt manuelles erweitertes Nachdenken mit `budget_tokens`.
## Referenz
Der System-Prompt, den Claude Haiku 4.5 auf claude.ai und in den Claude-Apps verwendet.
Sicherheitsbewertungen und Bereitstellungsentscheidungen für Claude Haiku 4.5.
Vollständige Preisliste, einschließlich Batch-Rabatten und Prompt-Caching-Raten.
Wie Modell-IDs, Aliase und fixierte Snapshots funktionieren.
Lebenszyklusstatus und Einstellungszusagen für jedes Claude-Modell.
Claude Haiku 4.5 ist auch über die InvokeModel-Bedrock-Integration und Bedrock-artige Modell-IDs verfügbar.