Miles Brundage Retweets Assessment of Fable 5.1 CoT Controllability

Miles Brundage, an AI policy researcher and Executive Director of AVERI, a nonprofit focused on third-party auditing and evaluation of frontier AI systems, retweeted a message. The message from @tenobrus indicates it seems likely that Fable 5.1 has CoT controllability on par with Astra. The retweet brings attention to this particular comparison in model performance. Available posts include only this single statement from the original poster. No additional details or confirmations from other sources appear in the posts. The claim reflects the view expressed by @tenobrus rather than an established fact.