TL;DR: Aikido Code Audit fills the gap between SAST and pentesting by reasoning through your static codebases to surface multi-step, intent-dependent vulnerabilities before they ship. Last week Anthropic released Claude Fable 5, a public version of their Mythos-class model, which was able to discover and chain zero-day exploits. Fable 5 ships with guardrails that block cybersecurity queries and fall back to a more limited model, so the public version doesn't run those attacks for you.