A "leaked" 14-trillion-parameter Anthropic model on Hugging Face turned out to be random numbers
A 7.72-terabyte repository called burner22/numbat, posted on October 23rd and promoted on X on Saturday, claimed to be a mid-training of Anthropic's next Mythos-class model at about 14 trillion . It had 5,846 downloads by Saturday evening. Hugging Face users then showed every tensor could be regenerated exactly from its name: hash the name, use the hash to seed a standard random number generator, and the file comes out bit for bit. One reported matching all 162,246,496 values tested across 770 of 772 shards.
The repository also ships its own model code and asks users to trust it, which is the actual risk: a fake that big is mostly an invitation to run a stranger's code. Anthropic had not commented. SourcesC
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This story ran in the Morning Brief of November 2nd 2026.