Anthropic's Fable 5 lasted 3 days before the US government pulled it

Bye bye Fable

Anthropic launched Claude Fable 5 on June 9 as a guardrailed version of its Mythos-class model. Three days later the US government suspended access for all foreign nationals, citing a jailbreak risk. Anthropic couldn't cleanly enforce nationality-based access, so they shut it down entirely. shadcn's takeaway: use the best model while you have it to create durable plans and specs, then execute with something cheaper you control. Separately, Ramp released SWE-Bench built from real internal engineering problems—Fable 5 leads, but each performance bump costs 1.5x more. DeepSeek raised $7.4B in its first funding round at a $50B+ valuation, with the CEO writing ~40% of the check.

Why it matters: Anthropic's flagship model went from launch to full shutdown in 3 days after the US government flagged jailbreak risks, locking out even foreign employees. It hits product release, safety incident, and policy intervention simultaneously — dense enough for featured. Not scoring...