Anthropic API
Claude Fable 5.1 API Pricing 2026 — Cost per 1 Million Tokens
Current Claude Fable 5.1 API pricing from Anthropic per 1 million tokens, including input, output and cached-token rates when available.
| Model | Rate | Price / 1M tokens |
|---|---|---|
| Claude Fable 5.1 Anthropic's latest Fable model for demanding reasoning, long-horizon agentic work and complex coding. 1M context · 128K max output · adaptive thinking always on · text/image input. Input, output and cache-write rates are unchanged from Fable 5. Cache reads are 75% cheaper at $0.25 per 1M tokens, which Anthropic estimates reduces typical token-billed workloads by about 25%. | Input | $10 |
| Claude Fable 5.1 | 5m cache write | $12.5 |
| Claude Fable 5.1 | 1h cache write | $20 |
| Claude Fable 5.1 | Cache read / hit & refresh | $0.25 |
| Claude Fable 5.1 | Output | $50 |
How API token cost is calculated
Multiply the number of tokens by the provider rate, then divide by 1,000,000.
cost = tokens × price per 1M ÷ 1,000,000
Example: 250,000 input tokens at $2 / 1M = $0.50.