1. Marketing hype / skepticism
"So yeah, huge marketing as always." — bobbycastorama
2. Independent verification of a step‑change
"1,752 of those high‑ or critical‑rated vulnerabilities have now been carefully assessed by one of six independent security research firms... 90.6% (1,587) have proved to be valid true positives, and 62.4% (1,094) were confirmed as either high‑ or critical‑severity." — Smaug123
3. High cost and restricted access
"Claude Mythos Preview will be available to participants at $25/$125 per million input/output tokens." — gpugreg 4. Real‑world exploit verification
"In the article they describe how all the vulns are actually exploitable end‑to‑end and >1,000 have been independently verified as critical." — solenoid0937