--- title: Claude Opus 5.5 url: https://platform.claude.com/docs/zh-TW/models/opus-5-5/overview description: Claude Opus 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，以及使用它進行建構的指南和資源。 --- **Latest.** Released September 22, 2026. For long-running agentic coding and knowledge work Model ID: `claude-opus-5-5` Context window: 1M tokens · Max output: 128K tokens · Input pricing: $4 / MTok · Output pricing: $20 / MTok [Announcement](https://www.anthropic.com/claude-opus-5-5) · [What’s new](https://platform.claude.com/docs/zh-TW/models/opus-5-5/whats-new-opus-5-5) · [Migration guide](https://platform.claude.com/docs/zh-TW/models/opus-5-5/migration-guide) ## 概覽 Claude Opus 5.5 專為長時間執行的代理式程式設計與知識工作而打造。典型用途包括長達數小時的自主程式設計代理、大規模重構、複雜系統工程、大量依賴視覺的工作流程與電腦使用。 ## 比較 | Model | Context | Max output | Price / MTok | Latency | Thinking | Default effort | Knowledge cutoff | | :------------------------------------------------------------------------------------- | :------ | :--------- | :----------------- | :------- | :------------------- | :------------- | :--------------- | | [Claude Fable 5.1](https://platform.claude.com/docs/zh-TW/models/fable-5-1/overview) | 1M | 128K | $10 / $50 | Slower | Adaptive (always on) | `high` | Jun 2026 | | **Claude Opus 5.5** (this model) | 1M | 128K | $4 / $20 | Moderate | Adaptive (always on) | `medium` | Jun 2026 | | [Claude Sonnet 5.5](https://platform.claude.com/docs/zh-TW/models/sonnet-5-5/overview) | 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 5.1 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-opus-5-5` | | [Amazon Bedrock](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-amazon-bedrock) | `anthropic.claude-opus-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-opus-5-5` | | [Microsoft Foundry](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-in-microsoft-foundry) | `claude-opus-5-5` | | [Claude Platform on AWS](https://platform.claude.com/docs/zh-TW/build-with-claude/claude-platform-on-aws) | `claude-opus-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-opus-5-5` | ### Pricing | Feature | Value | | :---------------------------------------------------------------------------------------- | :------------------------------- | | Input | $4 / MTok | | Output | $20 / MTok | | [5m cache write](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $5 / MTok | | [1h cache write](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $8 / MTok | | [Cache read](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching) | $0.20 / 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 (always on) | | [Default effort](https://platform.claude.com/docs/zh-TW/build-with-claude/effort) | `medium` | | Comparative latency | Moderate | | 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 22, 2026 | | Retirement | Not sooner than September 22, 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）始終開啟，且無法關閉。請使用 [effort 參數](https://platform.claude.com/docs/zh-TW/build-with-claude/effort)控制思考深度。 * 在 [Message Batches API](https://platform.claude.com/docs/zh-TW/build-with-claude/batch-processing#extended-output-beta) 上，Claude Opus 5.5 搭配 `output-300k-2026-03-24` beta 標頭時，最多支援 300k 個輸出 token。 * 最小可快取提示長度為 512 個 token。請參閱[提示快取](https://platform.claude.com/docs/zh-TW/build-with-claude/prompt-caching#cache-limitations)。 * 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 Opus 5.5 特有的行為差異與提示模式。 控制思考深度、延遲和成本的設定。為每個工作負載選擇一個等級。 自適應思考的運作方式，以及思考區塊如何被保留。 在 Claude API 上提供較低延遲的 Claude Opus 5.5，另行計價。 ## 參考資料 Claude Opus 5.5 在 claude.ai 與 Claude 應用程式中使用的系統提示。 Claude Opus 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。