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## Availability ### API support #### [Messages API](https://platform.claude.com/docs/en/build-with-claude/working-with-messages)

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22title: Streaming messages
33url: https://platform.claude.com/docs/en/build-with-claude/streaming
44description: Stream Messages API responses incrementally with server-sent events, including text, tool use, and thinking deltas.
5featureMetadata:
6 status: ga
7 supportedModels:
8 - claude-fable-5-1
9 - claude-mythos-5-1
10 - claude-fable-5
11 - claude-mythos-5
12 - claude-mythos-preview
13 - claude-opus-5-5
14 - claude-opus-5
15 - claude-sonnet-5-5
16 - claude-sonnet-5
17 - claude-haiku-5-5
18 - claude-haiku-4-5-20251001
19 - claude-opus-4-8
20 - claude-opus-4-7
21 - claude-opus-4-6
22 - claude-sonnet-4-6
23 - claude-opus-4-5-20251101
24 - claude-sonnet-4-5-20250929
25 supportedPlatforms:
26 Claude API: ga
27 Claude Platform on AWS: ga
28 Claude Models on Google Cloud (Anthropic managed): ga
29 Amazon Bedrock: ga
30 Amazon Bedrock (InvokeModel):
31 availability: ga
32 note: The older Amazon Bedrock InvokeModel integration does not stream plain server-sent events.
33 Claude Models on Google Cloud (Google managed): ga
34 Microsoft Foundry: ga
535---
636 
737When creating a Message, you can set `"stream": true` to incrementally stream the response using [server-sent events](https://developer.mozilla.org/en-US/Web/API/Server-sent%5Fevents/Using%5Fserver-sent%5Fevents) (SSE).
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15301560 Process large volumes of requests asynchronously when you don’t need real-time responses.
15311561 </Card>
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1563 
1564## Availability
1565 
1566Message streaming is available on every model.
1567 
1568### API support
1569 
1570#### [Messages API](https://platform.claude.com/docs/en/build-with-claude/working-with-messages)
1571 
1572* Availability: Available
1573 
1574| Status | Cloud platforms |
1575| --------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
1576| Available | Claude API, [Claude Platform on AWS](https://platform.claude.com/docs/en/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/anthropic-managed), [Amazon Bedrock](https://platform.claude.com/docs/en/build-with-claude/claude-in-amazon-bedrock), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/en/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/en/build-with-claude/claude-in-microsoft-foundry) |
1577| Available<sup>1</sup> | [Amazon Bedrock (InvokeModel)](https://platform.claude.com/docs/en/build-with-claude/claude-on-amazon-bedrock-legacy) |
1578 
15791. The older Amazon Bedrock InvokeModel integration does not stream plain server-sent events.
15331580 
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