@ethanCaballero and it is warranted
Ethan Caballero@ethanCaballero
the claude fable 5 nerf for AI research has induced the angriest reaction from AI researchers that I've ever seen in my life
12:05 AM · Jun 10, 2026 · 819 Views
Extropic founder Guillaume Verdon backs complaints of Claude performance declines, while Andreas Kirsch warns of an escalating social panic
Operators reported a noticeable decline in advanced development effectiveness.
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Sentiment
Many users expressed intense anger at Anthropic for nerfing Claude on AI research tasks, seeing the limits as unjust barriers to scientific freedom after the company benefited from researchers' work.
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92.9%
14 comments with sentiment.
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Dante@thedntx
@ethanCaballero what exactly did they nerf? i keep seeing the rage but nobody posts the diff?
11hViews 1.2K
BOOKMARKS1
alex funk@alexzfunk
@ethanCaballero you can jailbreak it pretty easily:
8hViews 500Likes 5Bookmarks 1
LIKES35
Glen Wilson@GlenWilsonIA
@ethanCaballero Nothing scientists love more than being told what they can or cannot ask.
10hViews 717Likes 35Bookmarks 1
RETWEETS23
Ethan Caballero@ethanCaballero
the claude fable 5 nerf for AI research has induced the angriest reaction from AI researchers that I've ever seen in my life
13hViews 29.7KLikes 807Bookmarks 46
Mark Kretschmann@mark_k
@ethanCaballero Rightly so.
9hViews 481Likes 15
Andreas Kirsch 🇺🇦@BlackHC
It's almost on keep4o levels and people haven't even spent time with the model...
Also there is a social panic bc some folks have recklessly started describing the reduction in effectiveness as the model "sabotaging their work" and then others pick it up and understand it as the model introducing bugs and nerfing their experiments intentionally? 🤦
Ethan Caballero@ethanCaballero
the claude fable 5 nerf for AI research has induced the angriest reaction from AI researchers that I've ever seen in my life
7hViews 1.2KLikes 9Bookmarks 0
Pan Anon@therealpananon
@ethanCaballero You bomb the runway after you takeoff from it.
11hViews 352Likes 3
Gana@Gana_L_
@ethanCaballero It is warranted. Science is all about freedom and asking questions (and trying to answer them). There's nothing researchers dislike more than someone telling them what they can or cannot ask.
It's a 9/11 for all scientists (not only AI researchers)
8hViews 495Likes 3
AI News@AI_N3ws
@thedntx @ethanCaballero
10hViews 195Likes 3
rihim@rihim_s
@thedntx @ethanCaballero how are you supposed to diff it if you don’t know the baseline
11hViews 193Likes 3
sdmat@sdmat123
@ethanCaballero They're usually a chill bunch, has to be said (Yann aside)
10hViews 476Likes 2
Astraia@AstraiaAI
@ethanCaballero it's unexpected to say the least
at least only ban china and VPNs?
10hViews 725Likes 1
Choco@RobotChocobo
@ethanCaballero OpenAI + open source is the way
11hViews 345Likes 1
Ofek Shaked@VibeCoderOfek
@ethanCaballero Research communities optimize for exploration and benchmark chasing. Production teams optimize for reproducibility and auditability. The two groups experience the same release very differently.
10hViews 722
Evan 🛜@ubuto23
@ethanCaballero Yeah this is next level, they lost the fanboys even
9hViews 163Likes 1
Phill Gates@0x6080
@ethanCaballero The capitalists are squealing. They're being attacked from all angles.
One side: Bernie wants to take half of it Other side: Access is restricted
Comical
6hViews 304
Toast∆x@ToastMX
@ethanCaballero They should just smuggle in back doors in our codebase without telling us
9hViews 253
Pria@priadev888
@ethanCaballero Yes, they should die as a company.
10hViews 228
0xShobby@0xShobby
@ethanCaballero > release new AI model > refuses to do anything
Truly AGI
5hViews 60Likes 1
⚵ Dragonmonk1111 ⚵@Dragonmonk111
@ethanCaballero The inevitable rising of the singularity curve has been slowed down...
7hViews 185
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