Resolves YES if Anthropic makes Claude Mythos available to the general public (via API or consumer product) by April 30, 2026. Early access or private testing does not count.

Claude Mythos was accidentally revealed on March 27 via a CMS misconfiguration. Anthropic confirmed it exists and described it as a step change in reasoning, coding, and cybersecurity. Currently in limited early access testing. Polymarket gives ~50% chance for April 30. Anthropic says rollout is determined by safety evaluation outcomes. Inference costs exceed Opus.