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Runs AI clones of your teammates as a local multi-agent office that works while you're away.
Munder Difflin is a free, open-source multi-agent harness that coordinates coding-agent CLIs — including Claude Code, Codex, Google Antigravity, and Grok Build — into a persistent, office-themed simulation of clones handling tasks like code review and Q&A around the clock. It runs locally so no task data leaves the machine, and the simulation layer itself is deterministic and doesn't consume model tokens; you pay only for the underlying model subscriptions the clones use. Paid tiers add hosted features: an Individual Pro plan at $20/month adds memory and workflow tools, and a Teams plan starts at $39 per seat per month for shared clone-to-clone messaging. Built by a single developer, Chaitanya Giri, it launched in 2026 and had grown past 2,000 users.
The open-source harness itself is free; the $20/month Individual Pro and $39/seat/month Teams plans add hosted memory, workflows, and shared messaging on top of it.
Use tool ↗Munder Difflin is MIT-licensed and free at its core — the clones themselves cost nothing beyond whatever Claude Code or Codex subscription you already pay for. The paid Pro and Teams tiers layer on persistence and shared memory rather than gating the base multi-agent orchestration, which is unusual for this category.
Watch out: Running a multi-agent setup multiplies token usage against your underlying Claude or Codex plan, so costs scale with how many clones you run.
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