Head to head / Harness
Pi vs Reasonix
Pi: Minimal, extensible terminal agent from Earendil Works, designed to be customized. Reasonix: Open-source coding agent for the terminal, desktop app, browser and VS Code.
| Fact | Harness | Harness |
|---|---|---|
| Kind | Harness | Harness |
| Status | Active | Active |
| Source | Open source | Open source |
| License | MIT | MIT |
| Pricing | Free · Free | Free · Free |
| Model access | Your subscription, Your API key, Local models | Your API key |
| Platforms | macOS, Linux, Windows, Android | macOS, Linux, Windows |
| Interfaces | CLI, TUI, API | CLI, TUI, Desktop, Web, IDE extension |
| Install | npm install -g --ignore-scripts @earendil-works/pi-coding-agent | npm install -g reasonix |
| GitHub | ★ 116k · checked 2026-10-18 | ★ 35.8k · checked 2026-10-18 |
| Last verified | 2026-10-18 | 2026-10-18 |
| Worktrees | ? | ? |
| Parallel agents | ? | ? |
| Subagents | ✗ | ? |
| MCP | ✓ | ✓ |
| Remote access | ? | ? |
| Cloud sandbox | ? | ? |
| Diff review | ? | ? |
| Plan mode | ✗ | ✓ |
✓ yes ✗ no ? not verified yet
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