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7474
7575## Claude API versus cloud platforms
7676
77Claude is available through the direct Claude API and through cloud platforms. Choose based on your infrastructure, feature availability, compliance requirements, and pricing preferences.
77Claude is available through the first-party Claude API and through cloud platforms. Choose based on your infrastructure, feature availability, compliance requirements, and pricing preferences.
7878
7979### Claude API
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9999| Microsoft Foundry | Microsoft Azure (Anthropic-operated) | [Claude in Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) |
100100
101101<Note>
102 Claude Managed Agents is available through the direct Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), and [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed). For feature availability across platforms, see the [Features overview](https://platform.claude.com/docs/en/build-with-claude/overview).
102 Claude Managed Agents is available through the first-party Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), and [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed). For feature availability across platforms, see the [Features overview](https://platform.claude.com/docs/en/build-with-claude/overview).
103103</Note>
104104
105105## Request and response format
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106106
107107### Request size limits
108108
109The first-party Claude API enforces these request size limits:
110
109111| Endpoint | Maximum request size |
110112| -------------------------------------------------------------------------------------------------------------------- | -------------------- |
111| Messages, Token Counting | 32 MB |
113| Messages, Token Counting | 128 MB |
112114| Message Batches API (see [Batch processing](https://platform.claude.com/docs/en/build-with-claude/batch-processing)) | 256 MB |
113115| [Files API](https://platform.claude.com/docs/en/build-with-claude/files) | 500 MB |
114116| Sessions, Agents, Environments | 32 MB |
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116118If you exceed these limits, you’ll receive a 413 `request_too_large` error.
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118120<Note>
119 Partner-operated platforms have their own request size limits: Bedrock limits requests to 20 MB, and Claude Models on Google Cloud (Google managed) limits requests to 30 MB. Claude Platform on AWS uses the same limits as the direct Claude API. Consult your platform’s documentation for current values.
121 Partner-operated platforms have their own request size limits: Bedrock limits requests to 20 MB, and Claude Models on Google Cloud (Google managed) limits requests to 30 MB. Claude Platform on AWS, Claude Models on Google Cloud (Anthropic managed), and Microsoft Foundry support Messages and Token Counting requests of up to 32 MB. Consult your platform’s documentation for current values.
120122</Note>
121123
122124### Response headers
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