White House's ex-AI adviser David Sacks said Chinese startup Moonshot's Kimi K3 fixed 15 critical security bugs rejected by OpenAI's Codex and Anthropic's Fable due to cyber guardrails. "There’s no reason to limit American models on tasks that Chinese models handle without issue. We’re only making ourselves less competitive," he added. Kimi K3's debut has also rattled global technology stocks.