ALL of the "mythos-level" models that cost billions to develop are not publicly available: - Claude Mythos 5 - GPT-5.6 - Le Chaton Fat
2:36 PM · Jun 26, 2026 · 14.2K Views
LisanBench creator @scaling01 says three highly funded models, including GPT-5.6 and Claude Mythos 5, remain unavailable to the public
Rumors claim the Le Chaton Fat model cost trillions.
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Some users praise models like Le Chaton Fat and Mythos as superior while many others dismiss the claims about unavailable advanced AI models as clickbait or exaggeration.
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Lisan al Gaib@scaling01
(Mythos is still in a class of its own btw)
Lisan al Gaib@scaling01
ALL of the "mythos-level" models that cost billions to develop are not publicly available: - Claude Mythos 5 - GPT-5.6 - Le Chaton Fat
2hViews 1.9KLikes 16Bookmarks 0
BOOKMARKS1LIKES39RETWEETS2
Aidan McLaughlin@aidan_mclau
@scaling01 rumor is le chaton fat cost trillions
Lisan al Gaib@scaling01
ALL of the "mythos-level" models that cost billions to develop are not publicly available: - Claude Mythos 5 - GPT-5.6 - Le Chaton Fat
2hViews 1.5KLikes 39Bookmarks 1
Lisan al Gaib@scaling01
@aidan_mclau 7 trillion, sama knew
Aidan McLaughlin@aidan_mclau
@scaling01 rumor is le chaton fat cost trillions
2hViews 1KLikes 21Bookmarks 0
Javier@javi_22_dev
@scaling01 Le Chaton Fat is better kept private, too powerful for the masses
2hViews 223Likes 5
will@willx6923
@scaling01 This statement just proves you’ve never used Le Chaton Fat
2hViews 54Likes 5
DarthDoger@Boy95964151
@scaling01 Le Chaton Fat is in a class above "mythos-level" so I wouldn't include it in this list.
2hViews 193Likes 2
Ferbin@Ferbin08
@scaling01 they're not mythical, just proprietary.
billions to train, you're not giving it away. you're selling it. that's why frontier models stay closed.
2hViews 193Likes 1
Hong Groyper@Hong60282445
@scaling01
2hViews 158Likes 1
🌱@beelibers
@scaling01 Le Faton Cat
2hViews 51Likes 1
Sound@LuCaPloo
@scaling01 Yea, no shit. 5.6 preview-closed-limited revealed via TWO BENCHMARKS?
Clearly clickbait.
2hViews 45Likes 1
jack@digiIov
@scaling01 ur saying sol is on the 10T oom?
2hViews 95
Bryson@basedbryson
@scaling01 Glazer
1hViews 17Likes 1
Sound@LuCaPloo
@scaling01
Mythos level has only Mythos (and overweight cats...)
2hViews 43
Cawing Crow@cawcawingcrow
@scaling01 Not technically a model but… https://sakana.ai/fugu/ is damn close
1hViews 11Likes 1
overbait@overbeight
@scaling01 Le Chaton
1hViews 14
Naga@_Nagaa____
@aidan_mclau @scaling01 In unrealized profits
1hViews 6
Tim B.@axttimm
@scaling01 No!
2hViews 2
Bryant@Skunkmonkey1243
@scaling01 ROFLMAO you forgot to include Santa Claus and the Easter Bunny in that list right alongside Le Chaton Fat. That was a hox hon.
1hViews 1
Yashas@YashasGunderia
@scaling01 @Shekswess Claude Fable 5
1hViews 1