AWS's Bedrock price list carries Claude Fable 5.2 and Mythos 5.2 at $8 / $40, 20% below 5.1, before any word from Anthropic

Amazon's public price list for Bedrock now includes Claude Fable 5.2 and Claude Mythos 5.2, two models Anthropic has not announced. Both are priced 20% below the 5.1 models they would follow. ArtificialWatch read the rows directly in AWS's Price List API, in the Bedrock foundation-model file AWS published at 18:09 UTC on November 9.

THE PRICES

Per 1M tokens, global cross-region inference, from AWS's own price list:

• Input: $8, down from $10 for Fable 5.1 and Mythos 5.1.
• Output: $40, down from $50.
• Cache reads: $0.20, down from $0.25.
• Cache writes: $10 for the 5-minute cache and $16 for the 1-hour cache, down from $12.50 and $20.
• In-region endpoints cost 10% more, as they do for 5.1: $8.80 input and $44 output in us-east-1.
• Fable 5.2 and Mythos 5.2 carry identical prices, and each is listed in 35 AWS regions.

WHAT IS SOURCED

• The rows are named Claude Fable 5.2 (Amazon Bedrock Edition) and Claude Mythos 5.2 (Amazon Bedrock Edition), provider Anthropic, sold as on-demand inference through AWS Marketplace.
• The listing was first spotted on X by @tensorson at 18:19 UTC, then relayed by @Mr_Salio and @LuminaBench.
• At 18:50 UTC, Anthropic's models overview and pricing pages still list Fable 5.1 as the newest Fable, and neither OpenRouter nor models.dev lists a 5.2 id.

WHAT WE DO NOT KNOW

Whether and when Anthropic releases either model, what changed from 5.1, and whether Anthropic's own API prices fall by the same 20%. Mythos 5.1 is limited to verified organizations, and AWS's price list does not say whether Mythos 5.2 would be. ArtificialWatch's Fable 5.2 and Mythos 5.2 hunts are armed and send an alert the moment either id is served.