AnthropicAPI
Claude Fable 5.1 API
7.5/10Efficiency Score
$10/1M tokens
Pricing Details
Input Tokens$10/1M
Output Tokens$50/1M
Context Window1M
Features
🆕 Released Nov 2026 — 面向高强度推理与长程智能体任务
输入 $10 / 缓存命中 $0.25 / 输出 $50 per 1M，Batch 半价 $5/$25
1M 上下文 / 128K 最大输出
Adaptive thinking 常开，默认 effort=high
Anthropic 官方推荐：Opus 5.5 评测不理想时用 Fable 5.1
Best For
Demanding reasoninglong-horizon agentic work