OpenAI's ChatGPT-5.6 gets the same banhammer treatment as Anthropic’s Mythos from the federal government — source says that Washington cautioned OpenAI against releasing the model without receiving approval
… This wasn’t the first time that an American AI lab has delayed the release of its frontier model due to security concerns. Back in early April, Anthropic released Claude Mythos Preview to select key institutions first, allowing them to prepare for the general release of the powerful AI model. …
