Anthropic to Launch Claude Fable 5 on June 9; Prediction Market Indicates 94% Probability of Release

According to monitoring by Beating, tech journalist Alex Heath reported that Anthropic plans to release Claude Fable 5, the first general-purpose large model in the Claude 5 series, on June 9 U.S. Eastern Time. The new model shares its underlying architecture with Claude Mythos 5, which is only available to controlled institutions, but includes additional safety safeguards for dual-use capabilities. Compared to existing Claude models, the new model demonstrates stronger performance on complex tasks such as long-context processing and multi-turn conversations. Rumors of the release have triggered significant volatility in prediction markets. As of publication, the probability of Claude 5 being released before June 30 has surged to 94.4%, while the probability of Claude Mythos being released before June 15 has reached 93%.