---
title: Claude Sonnet 5.5
url: https://platform.claude.com/docs/zh-TW/models/sonnet-5-5/overview
description: Claude Sonnet 5.5 概覽：其用途、各平台上的模型 ID、上下文視窗、輸出限制、定價、可用性，以及使用它進行建置的指南與資源。
---
**Latest.** Released September 28, 2026.
The best combination of speed and intelligence
Model ID: `claude-sonnet-5-5`
Context window: 1M tokens · Max output: 128K tokens · Input pricing: $2 / MTok · Output pricing: $10 / MTok
[Announcement](https://www.anthropic.com/claude-sonnet-5-5) · [What’s new](https://platform.claude.com/docs/zh-TW/models/sonnet-5-5/whats-new-sonnet-5-5) · [Migration guide](https://platform.claude.com/docs/zh-TW/models/sonnet-5-5/migration-guide)
## 概覽
Claude Sonnet 5.5 提供速度與智慧的最佳組合。它專為日常程式設計、代理與企業工作負載而打造，例如程式碼生成、資料分析、內容創作、視覺理解與代理式工具使用。
## 比較
| Model | Context | Max output | Price / MTok | Latency | Thinking | Default effort | Knowledge cutoff |
| :----------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------- | :------------------- | :------------- | :--------------- |
| [Claude Fable 5.2](https://platform.claude.com/docs/zh-TW/models/fable-5-2/overview) | 1M | 128K | $8 / $40 | Moderate | Adaptive (always on) | `high` | Jun 2026 |
| [Claude Opus 5.5](https://platform.claude.com/docs/zh-TW/models/opus-5-5/overview) | 1M | 128K | $4 / $20 | Moderate | Adaptive (always on) | `medium` | Jun 2026 |
| **Claude Sonnet 5.5** (this model) | 1M | 128K | $2 / $10 | Fast | Adaptive | `high` | Jun 2026 |
| [Claude Haiku 5.5](https://platform.claude.com/docs/zh-TW/models/haiku-5-5/overview) | 1M | 128K | From $0.10 / $0.50 | Fastest | Adaptive | `medium` | Jun 2026 |
* **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 5.2, Claude Mythos 5.2, 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.
* **Latency:** Comparative latency, relative to the current lineup, as published in the models overview. Actual latency depends on prompt length, output length, and thinking effort.
* **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.
## 規格
### Model IDs
| Platform | Model ID |
| :------------------------------------------------------------------------------------------------------------------------------------------------------------ | :---------------------------- |
| Claude API | `claude-sonnet-5-5` |
| [Amazon Bedrock](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-sonnet-5-5` |
| [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-models-on-google-cloud/google-managed) | `claude-sonnet-5-5` |
| [Microsoft Foundry](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-microsoft-foundry) | `claude-sonnet-5-5` |
| [Claude Platform on AWS](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-platform-on-aws) | `claude-sonnet-5-5` |
| [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-models-on-google-cloud/anthropic-managed) | `claude-sonnet-5-5` |
### Pricing
| Feature | Value |
| :---------------------------------------------------------------------------------------- | :------------------------------- |
| Input | $2 / MTok |
| Output | $10 / MTok |
| [5m cache write](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $2.50 / MTok |
| [1h cache write](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $4 / MTok |
| [Cache read](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $0.10 / MTok |
| [Batch API](https://platform.claude.com/docs/zh-TW/build-with-claude/batch-processing) | 50% discount on input and output |
[Full price list](https://platform.claude.com/docs/zh-TW/about-claude/pricing)
### Capabilities
| Feature | Value |
| :----------------------------------------------------------------------------------------------------------------------------- | :--------------------- |
| [Context window](https://platform.claude.com/docs/zh-TW/build-with-claude/context-windows) | 1M tokens |
| Max output | 128K tokens |
| [Max output (Batch API, beta)](https://platform.claude.com/docs/zh-TW/build-with-claude/batch-processing#extended-output-beta) | 300K tokens |
| [Thinking](https://platform.claude.com/docs/zh-TW/build-with-claude/thinking) | Adaptive |
| [Default effort](https://platform.claude.com/docs/zh-TW/build-with-claude/effort) | `high` |
| Comparative latency | Fast |
| Input → output | Text and images → text |
| Reliable knowledge cutoff | Jun 2026 |
| Training data cutoff | Jun 2026 |
### Availability
| Feature | Value |
| :------------------------------------------------------------------------------- | :------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [Status](https://platform.claude.com/docs/zh-TW/about-claude/model-deprecations) | Active (latest) |
| Released | September 28, 2026 |
| Retirement | Not sooner than September 28, 2027 |
| Platforms | Claude API, [Amazon Bedrock](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-amazon-bedrock), [Claude Models on Google Cloud (Google managed)](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-models-on-google-cloud/google-managed), [Microsoft Foundry](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-microsoft-foundry), [Claude Platform on AWS](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-platform-on-aws), [Claude Models on Google Cloud (Anthropic managed)](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-models-on-google-cloud/anthropic-managed) |
## 須知事項
* 「Adaptive thinking」（自適應思考）預設為開啟。最低的思考設定為 `between_tools`，它會關閉預先思考。此設定適用於 `high` 或更低的「effort」（投入程度）。請參閱 [Claude Sonnet 5.5 的新功能](https://platform.claude.com/docs/zh-TW/models/sonnet-5-5/whats-new-sonnet-5-5#turn-off-up-front-thinking)。
* 設定 `temperature`、`top_p` 或 `top_k` 會傳回 400 錯誤。
* 可快取提示的最小長度為 512 個 token。請參閱[提示快取](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching#cache-limitations)。
* 在 [Message Batches API](https://platform.claude.com/docs/zh-TW/build-with-claude/batch-processing#extended-output-beta) 上，搭配 `output-300k-2026-03-24`「beta header」（測試版標頭），Claude Sonnet 5.5 最多支援 300k 個輸出 token。
* 使用 [Models API](https://platform.claude.com/docs/zh-TW/api/models/list) 以程式化方式查詢限制與功能。
## 資源
Claude Sonnet 5.5 特有的行為差異與提示模式。
控制思考深度、延遲與成本的設定。為每個工作負載選擇適合的等級。
自適應思考的運作方式、各模型接受哪些思考設定，以及思考區塊如何被保留。
## 參考
Claude Sonnet 5.5 在 claude.ai 與 Claude 應用程式上使用的系統提示。
Claude Sonnet 5.5 的安全性評估與部署決策。
完整價目表，包括批次折扣與提示快取費率。
模型 ID、別名與固定快照的運作方式。
每個 Claude 模型的生命週期狀態與退役承諾。