Anthropic: The model based on Fable 5.2 and Mythos 5.2 was tested by evaluation agencies such as the UK Artificial Intelligence Security Research Institute, Frontier Design, and METR before release.

Anthropic: The model based on Fable 5.2 and Mythos 5.2 was tested by evaluation agencies such as the UK Artificial Intelligence Security Research Institute, Frontier Design, and METR before release.