Fable 5.5 Pricing — and What Fable Costs Today
Anthropic has not published a Fable 5.5 price. The confirmed rates below are for the current model, Fable 5.1 — $10 / $50 per million input/output tokens. Use the calculator to compare Fable 5.1, Opus 5.5, Sonnet 5.5 and a cheaper compatible endpoint.
Official API price list (Anthropic, USD per million tokens)
| Item | Fable 5.1 | Opus 5.5 | Sonnet 5.5 |
|---|---|---|---|
| Input | $10 | $4 | $2 |
| Output | $50 | $20 | $10 |
| Cache write (5 min) | $12.50 | standard cache rules | |
| Cache write (1 hour) | $20 | ||
| Cache read / refresh | $0.25 | $0.20 | $0.20 |
| Batch (input / output) | $5 / $25 | $2 / $10 | $1 / $5 |
- Fallback billing rule: when the safety classifier triggers (cybersecurity / bio / chemistry / distillation-type requests), another Claude model may answer, and that request is billed at the answering model's rates, with a notice.
- The big lever: Fable 5.1 cut the cache-read rate to $0.25/M (1/40 of input). Long system prompts plus a high cache-hit rate are the largest cost reducer.
- No promised Fable 5.5 price. Extrapolating from Opus 5.5 or Sonnet 5.5 is not a quote — wait for official documentation.
- Third-party rate: aggregator OmniaKey lists
claude-fable-5-1at $2.80 / $14 per million (~72% below official) with $0.07 cache reads, on an official-compatible endpoint.
Subscription side: after the June window
⏰ The June promotion is over
June 9–22, 2026: Pro / Max / Team plans included Fable 5 at 2× usage.
Since June 23, 2026: removed from those plans — continued use requires paid usage credits or API access. There is no announced end-date extension.
Ways to keep using Fable → fableclaude.com
Cost calculator (Fable 5.1 vs Opus 5.5 vs an aggregated endpoint)
Method: Fable 5.1 at $10 input / $0.25 cache read / $50 output; Opus 5.5 at $4 / $0.20 / $20; OmniaKey Fable 5.1 at $2.80 / $0.07 / $14. Cache-write fees not included. Batch and caching don't stack (hit rate ignored when Batch is checked).
Done with the math? Start using it
OmniaKey: Fable 5.1 at $2.80/$14 per million (~72% off official) · $0.07 cache reads · USDT or card · no card required to sign up
FAQ
How much will Fable 5.5 cost?
No price has been announced. The current Fable model, Fable 5.1, is $10 input / $50 output / $0.25 cache read per million tokens. Any Fable 5.5 figure circulating now is speculation.
How much does Fable cost today?
API: $10 per million input, $50 per million output, $0.25 cache read. On claude.ai it now requires paid usage credits. Third-party aggregator OmniaKey offers the current model at $2.80/$14.
Does Fable have a free tier?
The API has no free allowance, and the June 2026 claude.ai inclusion ended. Fable now requires paid usage credits or API access.
How do I make Fable cheaper?
Four levers, in order of impact: maximize prompt-cache hits ($0.25 vs $10 per million), route only hard tasks to Fable and the rest to Opus 5.5 / Sonnet 5.5, use Batch for offline jobs (half price), and compare third-party rates — OmniaKey's $2.80/$14 is about 72% off official.
How are fallback requests billed?
When the safety classifier hands your request to another Claude model, that request is billed at the answering model's rates, and the response carries a downgrade notice. Budget at a blended rate if you work in sensitive domains.