June 29, 2026
Restriction Without a Theory of Demand
Suspending access to Mythos did not remove the demand for AI, it just switched suppliers. Competitors with fewer guardrails filled the gap in two weeks.
The model is called Fugu. In Japanese, that is the name of the pufferfish, the feared fish whose preparation is reserved for master chefs and that kills if handled wrong. Sakana AI, founded in Tokyo by former Google researchers, insists the launch timing was "entirely coincidental."
Two weeks earlier, the US government had suspended global access to Anthropic's Mythos. The most audited model on the market, with the most documented guardrails, the longest public safety track record. The stated reason was that it was "too dangerous to circulate freely."
Shortly after, coincidentally, Sakana's site appeared updated: "frontier capability without the risk of export controls."
That sums up the problem better than any foreign policy analysis could. When you pull the most regulated supplier out of circulation without addressing the demand, the market does not stop, it just switches suppliers. In the same window, the Chinese company 360 launched Tulongfeng, built specifically to find software vulnerabilities. According to its founder, that capability is a "national strategic asset."
The decision to restrict was presented as protection, but the result was a market opening for whoever was not carrying the same restrictions.
We have seen this pattern in other products before: remove some feature "to protect the user" without understanding why they used it or how much it mattered. The user does not recognize parental intent. Like a rebellious teenager, they just switch tools.
Sources: TechCrunch · Reuters · Sakana AI