/Tech1d ago

Allen Institute's Finbarr Timbers questions which rival AI labs Anthropic expects 'Mythos' or 'Fable' will accelerate

Alexander Doria argues large corporations drive the acceleration risk.

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finbarr@finbarrtimbers#415inTech

I’m curious who the labs are that Anthropic is actually worried that Mythos/Fable will accelerate. OpenAI doesn’t use Claude. DeepMind?

12:20 PM · Jun 9, 2026 · 47.6K Views
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Many users accuse Anthropic of xenophobic targeting and manipulative intent to limit real AI development through its Mythos-related concerns about labs.

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AFAIK all of Meta, GDM, MAI, Amazon (heh), xai use Claude. I believe Nvidia too but unsure? And i don't know but i would guess that the four big Chinese ones do too?

And all of these have some sort of agi/frontier push effort.

Also unclear if they count all the R(eiou)cursive startups too?

finbarr@finbarrtimbers

I’m curious who the labs are that Anthropic is actually worried that Mythos/Fable will accelerate. OpenAI doesn’t use Claude. DeepMind?

1dViews 13.4KLikes 138Bookmarks 21
Nathan Lambert@natolambert

@finbarrtimbers Finbarr they're worried about me accelerating off the couch

finbarr@finbarrtimbers

I’m curious who the labs are that Anthropic is actually worried that Mythos/Fable will accelerate. OpenAI doesn’t use Claude. DeepMind?

1dViews 4KLikes 78Bookmarks 1

@finbarrtimbers What about small open-source labs? E.g. PrimeIntellect and co?

finbarr@finbarrtimbers

I’m curious who the labs are that Anthropic is actually worried that Mythos/Fable will accelerate. OpenAI doesn’t use Claude. DeepMind?

1dViews 3.2KLikes 22Bookmarks 2
finbarr@finbarrtimbers

@BlackHC Do you think they’re actually worried about them? I can’t see Ant being worried about eg Ai2 or Arcee

@finbarrtimbers What about small open-source labs? E.g. PrimeIntellect and co?

1dViews 2.8KLikes 19Bookmarks 1
Alexander Doria@Dorialexander

Maybe less labs than large companies. This is already happening in China and the tokenonomics crisis has created the incentives.

finbarr@finbarrtimbers

I’m curious who the labs are that Anthropic is actually worried that Mythos/Fable will accelerate. OpenAI doesn’t use Claude. DeepMind?

1dViews 2.8KLikes 27Bookmarks 0

Depends how much open-source AI could be accelerated when using their models to do the work

If a lot of the gains come from good post-training, then preventing acceleration makes sense from a safety point of view because you don't want open-source catching up to Mythos-style cyber capabilities super quickly

finbarr@finbarrtimbers

@BlackHC Do you think they’re actually worried about them? I can’t see Ant being worried about eg Ai2 or Arcee

1dViews 673Likes 9Bookmarks 1
finbarr@finbarrtimbers

@giffmana Oh, yes, ofc. I bet slowing down Meta is a major priority here.

AFAIK all of Meta, GDM, MAI, Amazon (heh), xai use Claude. I believe Nvidia too but unsure? And i don't know but i would guess that the four big Chinese ones do too?

And all of these have some sort of agi/frontier push effort.

Also unclear if they count all the R(eiou)cursive startups too?

1dViews 2.9KLikes 16Bookmarks 0
finbarr@finbarrtimbers

@immortaldip Do you think they’re actually worried about cursor/xai? Chinese labs maybe.

1dViews 190Likes 5
immortal@immortaldip

@finbarrtimbers could be Chinese labs or Cursor/Xai gang...

1dViews 186Likes 4
Saurabh Shah@saurabh_shah2

@finbarrtimbers me

1dViews 198Likes 7
finbarr@finbarrtimbers

@natolambert They should be worried about you!

1dViews 2KLikes 5
Ω.KendrickPlumard@fouriergalois

@BlackHC @finbarrtimbers bro how do you manage to turn that into safety problem haha

1dViews 207Likes 1
umumu@umi33563

@Dorialexander I'm utterly convinced that primary motivation for MAI-Thinking-1 was as a hedge and leverage vis-à-vis Ant pulling these kind of stunts.

1dViews 89Likes 1
Rohan@proxy_vector

@finbarrtimbers Could be less about named labs and more about diffusion into the long tail: smaller applied teams suddenly getting frontier-level leverage in cyber or bio workflows. That changes the threat surface faster than any one big lab.

1dViews 181Likes 3

@giffmana @finbarrtimbers Wonder if Arcee and Cohere as well

1dViews 467Likes 2
Roy Jossfolk Jr.@royjossfolk

@finbarrtimbers You. They don't want you to build anything of real substance. They just want you to one-shot little games and useless Saas that no one will buy.

They just want to give you the illusion that you're doing real work before they rug pull everyone's job.

1dViews 297Likes 2
/@gazorp5

@finbarrtimbers Meta, DeepMind, China

1dViews 241Likes 2
arb8020@arb8020

@finbarrtimbers me

1dViews 509Likes 1
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