China may have accessed Mythos
Semafor (via Verge): the White House export-control directive that shuttered Mythos was driven by intelligence that China may have accessed the model.
Why it matters
- Provides the security rationale that was missing from the public Fable shutdown narrative.
- Recharacterizes the action from competitor-lobbying to genuine national-security incident.
- Makes future model-access leakage events foreseeable export-control triggers — every lab's posture changes overnight.