Claude Fable 5.1 Pricing

Claude Fable 5.1 API pricing

Claude Fable 5.1 API pricing is $10 per million input tokens and $50 per million output tokens, verified October 8, 2026.

Input (per 1M tokens)

$10

Output (per 1M tokens)

$50

Cached input (per 1M tokens)

$0.25

Cache write, 5m TTL

$12.5

Cache write, 1h TTL

$20

Batch discount

50%

No Claude Fable 5.1 price changes have been recorded yet.

No price snapshots recorded yet.

Frequently asked questions

Short answers to the most common questions about Claude Fable 5.1 pricing, limits, and capabilities.

Notes

ADDED 2026-10-08, read directly from platform.claude.com/docs/en/about-claude/pricing. Positioned for demanding reasoning and long-horizon agentic work. STANDARD: input $10 / output $50 / cache write 5m $12.50 / cache write 1h $20 / cache read $0.25 per MTok. Batch halves input and output to $5 / $25. US regional endpoint 1.1x. SAME HEADLINE AS FABLE 5, QUARTER THE CACHE COST. Fable 5 is also $10 / $50 but its cache read is $1. Fable 5.1 reads cached input at $0.25 — 75% cheaper for the same headline price. For cache-heavy agentic workloads this is the entire difference between the two models, and it is invisible if you only compare input and output. Fable 5 remains listed and is NOT deprecated. Context Window and Max Output Tokens left EMPTY — not stated on the pricing page. Fill from the model overview page rather than assuming.