Reddit User Says Hugging Face Mythos-Class Weights Look Synthetic

Reddit user johnxreturn said a limited sample of a Hugging Face repository claiming to hold an Anthropic Mythos-class checkpoint showed most of the sampled weights appeared synthetic. The repository, burner22/numbat, was created Oct. 23 and circulated on Reddit Sunday, Nov. 1. Its description calls the files a mid-training checkpoint from Anthropic's next Mythos-class run, with about 14 trillion parameters and 1,224 experts. It lists 7.72 terabytes of data split across 772 shards and does not identify a numbered Mythos version. johnxreturn said the analysis sampled only a small portion of the files and compared them with Alibaba's Qwen2.5-7B.

Source: TokenPost