Home / Anthropic / Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback)NEW+4 tiers

Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback) is developed by Anthropic, released 2026-09-01.

Reasoning-effort tiers merged. This page shows the highest-intelligence tier. It merges 5 tiers of the same model: Claude Fable 5.1 (Adaptive Reasoning, Max Effort, Default Fallback), Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback), Claude Fable 5.1 (Adaptive Reasoning, High Effort, Default Fallback), Claude Fable 5.1 (Adaptive Reasoning, Medium Effort, Default Fallback), Claude Fable 5.1 (Adaptive Reasoning, Low Effort, Default Fallback).
Input price
$10.00 / 1M tok
Output price
$50.00 / 1M tok
Blended price
$20.00 / 1M tok
Intelligence
53.4
100th percentile of 536 models with an Intelligence score — highest tracked
Coding
81.6
100th percentile of 197 models with a Coding score — highest tracked
Math
—
Speed
67 tok/s
Time to first token
113.57s

Third-party resale listings

Captured 2026-09-22 from the reseller marketplace subrouter.ai's public pricing list. These are third-party resale prices, not Anthropic's official price. Many resellers use shared/subscription access or reverse-engineered integrations — availability and quality are not verified by this site. Prices are USD per 1M tokens. Reseller names are the marketplace's own listing IDs, not company names — none of them is Anthropic or any other model developer.

14 resellers passed our sanity checks against Anthropic's official price; cheapest trusted price $2.00/1M blended.

Reseller (marketplace ID)Input $/1MOutput $/1MBlended $/1Mvs. official
laoliu 0.2279 1.1397 0.4559 2% Likely subscription-resale / reverse-engineered
GETAPI 1.00 5.00 2.00 10%
viapi 1.2838 6.4191 2.5676 13%
naturalAi 1.3794 6.8926 2.7577 14%
leapnode 1.4706 7.3529 2.9412 15%
Stable AI 1.6471 8.2353 3.2941 16%
mixmix123 1.7647 8.8235 3.5294 18%
limeng-api 1.7647 8.8235 3.5294 18%
CCAI 2.6471 13.2353 5.2941 26%
viapi-plus 2.6735 13.3676 5.3471 27%
pcoreAI 2.9412 14.7059 5.8824 29%
OrangeAPI 4.80 24.00 9.60 48%
PandaAI 4.80 24.00 9.60 48%
my-star 5.00 25.00 10.00 50%

Resale listings: subrouter.ai public marketplace snapshot 2026-09-22.

Official pricing from Anthropic. See the third-party resale listings above for reseller prices — those are not official and not verified by this site.

See all of Anthropic's models on its provider page, or browse the full model directory.