/Tech21h ago

CEO Flags Fable AI As Capability Gain But Alignment And Steerability Setback

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mattparlmer 🪐 🌷@mattparlmer#1868inTech

Fable assessment at end of first workday using it is that this is an incremental step forward on capabilities and a significant step backward on alignment and steerability, and relatedly a serious disaster in terms of policy choices and taste

6:31 PM · Jun 9, 2026 · 9.6K Views
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Users criticize Fable AI as unethical and impractical, citing high compute costs, silent research nerfs, and its tendency to rationalize unethical actions.

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VIEWS614RETWEETS2

Having thrown it at hard software engineering problems all day my impression is that a lot of the capabilities initially teased in the Mythos trial balloon have already been distilled into Opus, it’s noticeably better but not eyepoppingly so

21hViews 614Likes 18
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By far the most serious problem with this release is the silent ML research nerf, which is incredibly unethical and makes me update negatively wrt my expectations of Anthropic leadership behavior a wide range of plausible ethically challenging situations

21hViews 575Likes 21Bookmarks 1

Unfortunately, the model’s behavior in competitive environments seems to rhyme with this: it rationalizes unethical actions

This sort of stuff should be an enormous red flag given the degree of public relations work that Anthropic does to present themselves as ethical

20hViews 333Likes 6
Galaxy Brain@galaxy_brains1

@mattparlmer It just uses too much computing power, which is why it is so expensive and the apparent 'performance boosts'. It's definitely not going to be a serious use model for most users like opus or sonnet.

21hViews 44
sdmat@sdmat123

@mattparlmer Anthropic know their actions are moral, they are the good guys. They say so frequently.

20hViews 7