Polymarket Odds for Anthropic Fable Model by Month-End Fall to 38%

Polymarket’s implied probability that Anthropic will make a qualifying Fable model publicly available by Oct. 31 stood at 38% at 12:55 a.m. ET (04:55 UTC) Friday, Oct. 23, after falling 30% over the previous 24 hours. For the market to settle “Yes,” a model’s name must contain “Fable” and its version number must be at least 5.2. Claude Fable 5.2, Claude Fable 5.3 and Claude Fable 6 meet those criteria; Claude Fable 5.1 and Claude Mythos 5.2 do not.