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Anthropic

Claude Sonnet 5.5

AClosed

Anthropic于2026年9月28日发布的Claude 5.5家族第二款模型，Sonnet 5的明确升级版，运行速度提升30%以上、多数任务成本降低最多30%。定位为Opus 5.5的更快、更低成本补充，擅长范围明确的日常任务、Bug修复与文档/幻灯片/表格制作。

API Pricing

Input

$2

Output

$10

Cached input

$0.2

Peak hours

—

USD / 1M tokens

※ 官方发布公告（anthropic.com/claude-sonnet-5-5，2026-09-28）：输入 $2 / 缓存读取 $0.2 / 输出 $10 每百万 tokens，与 Sonnet 5 同价；因每任务所需 token 更少，实测单任务成本最多低 30%

Price sourceanthropic.com ↗openrouter.ai ↗

No price change in the last two snapshots

Price history

12 snapshots · 2026-04-28 → 2026-08-17

Current: $25Period low: $25 (2026-04-28)Period high: $25 (2026-04-28)First tracked: $25 (2026-04-28)

Specifications

Context window
1M Tokens
Max output
128K Tokens
Input modalities
Text · Image
License
Closed

Overall score

Total

69.6

Rank

#4

Tier

A

Data confidence

85%

Capability97
Scale35
Value52
Context60.5
Ecosystem36
Freshness92.8

Capabilities & use cases

Terminal-Bench_4.0 70.6%GDPval-AA_v2.1 1844

Key capabilities

  • Cyber safeguards (first Sonnet with Opus-level safeguards)
  • Long-horizon work
  • Image understanding
  • Fast iteration

Best for

  • 日常编程与Bug修复
  • 文档/幻灯片/表格制作
  • 高并发Agent
  • 长时程任务

Official links

Website ↗API platform ↗Pricing page ↗Open in comparator ↗

Same vendor

Claude Haiku 5.5Claude Opus 5.5Claude Fable 5.1

Similar price

GPT-6.1 Sol $10GPT-5.6 Sol $10Gemini 4 Argon $10GPT-5.6 Terra $12Gemini 3.0 Pro $12Qwen3.8-Max（通义千问） $6

FAQ

What does Claude Sonnet 5.5 cost?
Claude Sonnet 5.5 is priced at $10 output and $2 input (USD per 1M tokens)
How large is the context window of Claude Sonnet 5.5?
Claude Sonnet 5.5 has a 1M Tokens context window with up to 128K Tokens output.
Where can I access Claude Sonnet 5.5?
Official channels: Website and API platform.

Data is refreshed daily and cross-checked against two independent sources; please confirm pricing and specs on the vendor page.