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Anthropic pricingClaude Fable 5.1 Pricing
Claude Fable 5.1 is Anthropic's most capable widely released model, for the most demanding reasoning and long-horizon agentic work. Its cache reads cost a quarter of Claude Fable 5's.
Claude Fable 5.1 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens. 1,000 typical requests cost about $40.00.
Claude Fable 5.1 API pricing
| Price type | Now (USD per 1M tokens) |
|---|---|
| Input | $10.00 |
| Cache reads | $0.25 |
| Cache writes, 5 minutes | $12.50 |
| Cache writes, 1 hour | $20.00 |
| Output | $50.00 |
| Batch input | $5.00 |
| Batch output | $25.00 |
What Claude Fable 5.1 costs in practice
Take a typical request with 2,000 input tokens and 400 output tokens. On Claude Fable 5.1:
- 1,000 requests cost $40.00 at standard prices.
- 1 million requests a month cost $40,000.
- If half of each prompt is read from cache, 1,000 requests cost $30.25.
- On the Batch API, with the same caching, they cost $15.12.
Cost calculator
Uses Claude Fable 5.1's standard prices checked October 30, 2026. Cache writes, thinking tokens and long-context tiers aren't included.
How to pay less for Claude Fable 5.1
- Cache reads cost $0.25 instead of $10.00. Writes cost 1.25x the base price for a 5-minute cache and 2x for a 1-hour cache, so caching pays off on prefixes you reuse.
- The Batch API takes 50% off input and output tokens.
- Model choice: route simple requests to Haiku 5.5, and keep Opus for the work that needs it.
apicuts switches these on for you, routes each request to the lowest-cost route that passes your quality checks, and guarantees at least 20% lower cost after our fee. See pricing.
Compare Claude Fable 5.1
See every model side by side in the LLM API pricing comparison.
Frequently asked questions
How much does Claude Fable 5.1 cost?
Claude Fable 5.1 costs $10.00 per 1M input tokens and $50.00 per 1M output tokens at standard prices, according to Anthropic's pricing page (checked October 30, 2026).
How much do 1,000 Claude Fable 5.1 requests cost?
About $40.00, for requests of 2,000 input and 400 output tokens without caching.
Is there a cheaper way to use Claude Fable 5.1?
Yes: caching repeated prompt prefixes, moving work that can wait to the Batch API at half price, capping output length, and sending simpler requests to a cheaper model.
Sources: Anthropic's pricing page. Checked October 30, 2026.
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