Twitter/X

Linzumi positions itself as a multiplayer alternative to Codex, enabling teams to…

2026-06-23 · 17:35 UTC ·@garrytan ·0 min read

Brief

Linzumi is presented as a multiplayer Codex-style tool that coordinates dozens of AI coding agents in shared chat threads for team workflows. Sean Grove, credited with reducing ChatGPT sycophancy at OpenAI, joined the YC startup. Y Combinator notes a limited-time free offering of GLM 5.2 via Wafer.ai and links to linzumi.com.

Why it matters

Linzumi positions itself as a multiplayer alternative to Codex, enabling teams to bring whole teams and dozens of AI coding agents into the same chat threads to keep a coordinated, unblocked workflow.

Key details

  • Sean Grove, who worked on reducing sycophancy in ChatGPT at OpenAI, joined Linzumi after leaving OpenAI and is part of this YC-backed startup.
  • Y Combinator highlights a limited-time offer to try GLM 5.2 (open-weights) at high speed via a Wafer.ai partnership; landing page: linzumi.com.
Source evidence

Linzumi is Codex but actually multiplayer. It’s magical for teams.

Also Sean Grove was on the team at OpenAI that greatly reduced sycophancy in ChatGPT before he left to start this YC startup!

Y Combinator (@ycombinator)

Bring your whole team and dozens of AI coding agents into the same chat threads, then let @linzumi_ai keep the fleet coordinated and unblocked.

And for a limited time, try state of the art open-weights intelligence free: GLM 5.2 at high speed, via their @wafer_ai partnership. → linzumi.com

Video

— https://nitter.net/ycombinator/status/2069465556433211583#m