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The Claude Fable 5 Drama: How the Most Impressive Model We Have Ever Tested Got Pulled

We spent the last few days testing Mythos, and it was unlike anything else in the field. Then the most impressive model we have ever used became the center of a national-security storm: cyber-capability flags, curtailed access, an investor reportedly uneasy in advance, governance debate stretching to India, and a stinging rebuke from AI godfather Geoffrey Hinton. Here is what actually happened, grounded in the record, and why it matters for everyone who builds on this technology.