October 9, 2026Practice
Pick your tool in Learn labs
Learn labs let you pick AlgoArena Agent, Claude Code, or Codex. The lab terminal stays connected and keeps your typing in order.

What changed
- Learn labs let you pick AlgoArena Agent, Claude Code, or Codex. The lab terminal stays connected and keeps your typing in order.
- Review my work now reads your files and what you did in the lab terminal. Lesson hints nudge you instead of handing over the answer.
- Signing in with GitHub now verifies your email without an inbox link, and Link with Google no longer closes itself after a GitHub sign-in.