# Herdr vs pi vs tmux: Which Agent Harness Should You Run?

DevFeed: [Herdr vs pi vs tmux: Which Agent Harness Should You Run?](<https://devfeed.tech/articles/herdr-vs-pi-vs-tmux-which-agent-harness-should-you-run-56168.md>)

Original publisher: [Read original article](<https://www.developersdigest.tech/blog/herdr-vs-pi-vs-tmux-agent-harness-compared>)

Author: Developers Digest

Published: 2026-08-23T00:00:00Z

Content type: comparison

Language: en

Sources: [Developers Digest](<https://devfeed.tech/sources/developers-digest.md>)

Topics: [Agent Harness](<https://devfeed.tech/topics/agent-harness.md>)

Tags: [agent-harness](<https://devfeed.tech/tags/agent-harness.md>), [ai-agents](<https://devfeed.tech/tags/ai-agents.md>), [developer-tools](<https://devfeed.tech/tags/developer-tools.md>), [herdr](<https://devfeed.tech/tags/herdr.md>), [pi](<https://devfeed.tech/tags/pi.md>), [terminal-multiplexer](<https://devfeed.tech/tags/terminal-multiplexer.md>), [tmux](<https://devfeed.tech/tags/tmux.md>)

## AI overview

A comparison of Herdr, pi, and plain tmux scripts as agent harnesses, based on their documentation and including cases where Herdr is weaker.

## Source excerpt

An Ask HN reply asked what Herdr fills that pi and plain tmux scripts don't already cover. We compared all three against their own documentation - including the places where Herdr genuinely loses.