Claude Sonnet 5Latest

The best combination of speed and intelligence

Context window: 1Mtokens
Max output: 128Ktokens
Input pricing: $2/ MTok
Output pricing: $10/ MTok

概覽

Claude Sonnet 5 是 Anthropic Sonnet 模型家族的下一代產品。它是 Claude Sonnet 4.6 的直接替換升級版本，具有三項行為變更：adaptive thinking（自適應思考）預設為開啟；手動「extended thinking」（擴展思考）現在會回傳 400 錯誤（它在 Claude Sonnet 4.6 上已被棄用）；將取樣參數（temperature、top_p、top_k）設為非預設值會回傳 400 錯誤。本頁彙整了發布時的所有新內容，包括新的 tokenizer（分詞器）。

Claude Sonnet 5 的新功能

比較

Model	Context	Max output	Price / MTok	Latency	Thinking	Default effort	Knowledge cutoff
Claude Fable 5.1	1M	128K	$10 / $50	Slower	Adaptive (always on)	`high`	Jun 2026
Claude Opus 5	1M	128K	$5 / $25	Moderate	Adaptive	`high`	May 2026
Claude Sonnet 5This model	1M	128K	$2 / $10	Fast	Adaptive	`high`	Jan 2026
Claude Haiku 4.5	200K	64K	$1 / $5	Fastest	Extended	—	Feb 2025

規格

Model IDs

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

Pricing

Input: $2 / MTok
Output: $10 / MTok
5m cache write: $2.50 / MTok
1h cache write: $4 / MTok
Cache read: $0.20 / MTok
Batch API: 50% discount on input and output
Full price list: Pricing

Capabilities

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

Availability

Status: Active (latest)
Released: June 30, 2026
Retirement: Not sooner than June 30, 2027
Platforms: Claude APIAmazon Bedrock Google Cloud Microsoft Foundry Claude Platform on AWS

須知事項

在 Message Batches API 上，Claude Sonnet 5 搭配 output-300k-2026-03-24 beta 標頭可支援最多 300k 輸出 token。
將 temperature、top_p 或 top_k 設為非預設值會回傳 400 錯誤。請參閱 Claude Sonnet 5 的新功能。
使用 Models API 以程式化方式查詢限制與功能。