overview changedmodels/haiku-4-5/overview
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## How it compares to the current lineup ## How it compares
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11---
22title: Claude Haiku 4.5
33url: https://platform.claude.com/docs/en/models/haiku-4-5/overview
4description: "Claude Haiku 4.5 reference: lifecycle status, model IDs on every platform, context window, output limits, pricing, and migration resources. Claude Haiku 5.5 is the current Haiku model."
4description: "Claude Haiku 4.5 reference: lifecycle status, model IDs on every platform, context window, output limits, pricing, and migration resources. Claude Haiku 4.5 is a legacy model; Claude Haiku 5.5 is the current Haiku model."
55---
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77**Legacy.** Released October 15, 2025.
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9The fastest model with near-frontier intelligence
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119Although Claude Haiku 4.5 is still available, you should consider migrating to Claude Haiku 5.5 for improved performance. [See Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/overview) · [Migrate to Claude Haiku 5.5](https://platform.claude.com/docs/en/models/haiku-5-5/migration-guide)
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1311Model ID: `claude-haiku-4-5-20251001`
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1715[Announcement](https://www.anthropic.com/news/claude-haiku-4-5)
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19## How it compares
17## How it compares to the current lineup
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2119| Model | Context | Max output | Price / MTok | Thinking | Default effort | Knowledge cutoff |
2220| :---------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------------------- | :------------- | :--------------- |
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