AnthropicAPI
Claude Opus 5.5 API
8.6/10Efficiency Score
$4/1M tokens
Pricing Details
Input Tokens$4/1M
Output Tokens$20/1M
Context Window1M
Features
🆕 Released Nov 2026 — 面向长时运行的智能体编码与知识工作
输入 $4 / 缓存命中 $0.20 / 输出 $20 per 1M，Batch 半价
1M 上下文 / 128K 最大输出，推理档位 low~max 五档
Adaptive thinking 常开，默认 effort=medium
工具调用系统提示词 286 tokens
Best For
Long-running agentic coding and knowledge work