# Why do LLM keys all start with sk? > Source: > Published: 2026-05-28 16:24:48+00:00 Hacker News new | past | comments | ask | show | jobs | submit login Why do LLM keys all start with sk? 2 points by swaraj 7 minutes ago | hide | past | favorite | discuss Genuinely curious, as a builder for so long, API keys took all shapes and sizes, but what's with the sk prefix these days? help Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact Search: