Claude Platform Docs

Although Claude Opus 4.8 is still available, you should consider migrating to Claude Opus 5.5.

See Claude Opus 5.5

模型與定價舊版模型

Claude Opus 4.8Legacy

Migrate to Claude Opus 5.5

Context window: 1Mtokens
Max output: 128Ktokens
Input pricing: $5/ MTok
Output pricing: $25/ MTok

與目前產品陣容的比較

Model	Context	Max output	Price / MTok	Thinking	Default effort	Knowledge cutoff
Claude Fable 5.1	1M	128K	$10 / $50	Adaptive (always on)	`high`	Jun 2026
Claude Opus 5.5	1M	128K	$4 / $20	Adaptive (always on)	`medium`	Jun 2026
Claude Opus 4.8This modelLegacy	1M	128K	$5 / $25	Adaptive	`high`	Jan 2026
Claude Sonnet 5.5	1M	128K	$2 / $10	Adaptive	`high`	Jun 2026
Claude Haiku 5.5	1M	128K	From $0.10 / $0.50	Adaptive	`medium`	Jun 2026

規格

Model IDs

Claude API
Amazon Bedrock
Google Cloud
Microsoft Foundry
Claude Platform on AWS

Pricing

Input: $5 / MTok
Output: $25 / MTok
5m cache write: $6.25 / MTok
1h cache write: $10 / MTok
Cache read: $0.50 / MTok
Batch API: 50% discount on input and output

Full price list

Capabilities

Context window: 1M tokens
Max output: 128K tokens
Max output (Batch API, beta): 300K tokens
Thinking: Adaptive
Default effort: high
Input → output: Text and images → text
Reliable knowledge cutoff: Jan 2026
Training data cutoff: Jan 2026

Availability

Status: Active (legacy)
Released: May 28, 2026
Retirement: Not sooner than May 28, 2027
Platforms: Claude APIAmazon Bedrock Google Cloud Microsoft Foundry Claude Platform on AWS

資源

遷移至 Claude Opus 5.5

從 Claude Opus 4.8 遷移至 Claude Opus 5.5 時有哪些變更。

Claude Opus 5.5

目前的 Opus 模型：概覽、規格與資源。

為 Claude Opus 4.8 撰寫提示

針對特定模型的提示指引。

參考資料

Claude Opus 4.8 在 claude.ai 和 Claude 應用程式上使用的系統提示。

Claude Opus 4.8 的安全評估和部署決策。

完整價格表，包括批次折扣和提示快取費率。

模型 ID 和版本控制

模型 ID、別名和固定快照的運作方式。

每個 Claude 模型的生命週期狀態和退役承諾。

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