Mistral AI Drops 'Le Chonk': A Massive AI Model Named After a Cat Meme

Paris-based Mistral AI launched >Mistral Large 4 on Tuesday, an AI model with 1 trillion parameters. That is the kind of system behind chatbots like ChatGPT and Claude, as parameters are the adjustable numbers it tunes during training—more of them generally means more capacity to learn, and more expensive to run. “[Mistral Large 4] is at the frontier of open models, and by far the strongest open-weight model from the US or Europe,” Mistral AI’s Chief scientist Guillaume Lample, >wrote on X. Not all of those parameters work at once. Large 4 uses a "mixture of experts" design, meaning the model routes each question to a few specialist sub-networks, so only 49 billion parameters fire per answer. Mistral's last flagship, Large 3, did the same with 41 billion active out of 675 billion. The whole “Le Chonk” nickname has a backstory. In June, after Mistral renamed its Le Chat assistant to Vibe, fans on Reddit and X invented a fictional model called >Le Chaton Fat—roughly "the fat kitten"—with 30 trillion parameters, 1,000 meows per second, and fake benchmarks claiming it beat Claude Fable 5. The French Goverment needs to STOP Le Chaton Fat before it's too late. This is the FAT takeoff we've been warned against for years! pic.twitter.com/VoaBPJmfBT — GLIF (@heyglif) June 15, 2026 CEO Arthur Mensch >played along, replying that the model was really called "le gros chaton," French for "the big kitten." Mistral then added a cartoon cat to its Vibe website. Its real launch post now lists the model as, "very officially," le Chonk. Mistral sells "sovereign AI"—models a country or company can own and run without handing its data to outside firms. Saudi Arabia's state-backed HUMAIN signed a deal worth hundreds of millions of euros in August with this company for this exact reason. Mistral raised a

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