Mistral AI has begun displaying a large white cat mascot in the UI of its AI chat and agent product "Vibe" (formerly Le Chat), inspired by the viral meme "Le Chaton Fat" (the fat kitten). The cat appears in both Chat and Work modes, with a tie-wearing version showing up in Work Mode.
Internet Hoax · AI Meme Watch
"Le Chaton Fat": The AI Monster That Doesn't Exist
A fictional ultra-model tied to Mistral AI is going viral with fake benchmarks and doctored screenshots. There was no announcement, no release — just satire of AI hype culture, born from a pun on "Le Chat" (the cat).
0
Official models released — pure user-made hoax
30T
Fake claimed parameters (256 experts MoE)
1M
Fake claimed context window in tokens
Hype vs. Reality — Parameters
The fake spec dwarfs Mistral's actual latest model by ~234×. Scale shown to proportion.
~128B
Mistral Medium 3.5 (real)
30T (fake)
"Le Chaton Fat" (fictional)
Spec Sheet: Fiction vs. Fact
Item
Le Chaton Fat (fake)
Medium 3.5 (real)
Parameters
30T MoE · 256 experts
~128B
Context
1M tokens
256k
Positioning
"Beats Fable 5" (fake)
Mid-size, agent-focused
Availability
Does not exist
Live via API / app
Why it caught on
Pun on "Le Chat" → "fat giant cat"
CEO played along with "le gros chaton"
Satire of benchmark & hype culture
EU vs. US AI geopolitics
The fallout
Fake "saturated leaderboard" jokes
Doctored Work-Mode screenshots
Outlets had to explain it's not real
Unofficial CHATON coin on Solana
The real product is "Mistral Vibe" — a rebrand of Le Chat.
It offers a Chat mode and a Work mode: an agent built on the real Mistral Medium 3.5, with parallel tool calls, progress streaming, and integrations like Google Workspace, Slack, and GitHub. "Le Chaton Fat" itself cannot be used by anyone.
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