Jiahao Shao Accuses Anthropic of Misjudging His Distillation of Claude, Account Restricted

Jiahao Shao publicly accused Anthropic and Dario Amodei, stating that he never distilled Claude, that the rollouts came from a strong open-source model, and that Claude was only used to submit tasks and run analyses, yet he was flagged for "training a competitor." He said that operations involving RFT, SFT, or training larger models would result in a ban, that Opus 5.5 was downgraded to Opus 5, or that sessions were terminated outright.