ArborvsMaestro
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Arbor
penso · Agent harness
OSSMCP
Panel
7.22 spec wins
- Reliability
- 7.0
- Usefulness
- 7.0
- Cost
- 8.7
- Longevity
- 6.0
“It manages your repositories, your worktrees, your terminals and your processes, so the only unmanaged thing left in the room is you.”
Maestro
Maestro · Agent harness
OSSMCP
Panel
7.02 spec wins
- Reliability
- 6.8
- Usefulness
- 7.3
- Cost
- 7.5
- Longevity
- 6.2
“There is a built-in web server with QR access, so you can now supervise a fleet of agents from a restaurant.”
Spec by spec
| Spec | Arbor | Maestro |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, linux, windows, web | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | Yes | No |
| MCP server | Yes | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | Yes | Yes |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | No | YesA maestro-cli binary runs playbooks headlessly from cron or CI with human-readable or JSONL output. |
| Models | ||
| Backbone | Claude Code, Codex, OpenCode | Claude Code, OpenAI Codex, OpenCode, Factory Droid, Copilot CLI |
| Bring your own model | Yes | Yes |
| Local models | YesOllama appears among the providers Arbor can be pointed at. | No |
| Cost | ||
| Pricing model | byok | byok |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | MIT | AGPL-3.0 |
| GitHub stars | 831 | 3,389 |
Which one would each critic pick
| Critic | Arbor | Maestro | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.5 | 7.3 | Arbor — Pick it if you work locally and responsiveness matters to you; pick AgentsMesh if the work has to live somewhere your team can reach. |
| El Crítico | 6.8 | 6.3 | Arbor — The desktop app, the web interface and the command line all read one daemon, and nothing documents what an in-flight session does when it dies. |
| El Profesor | 7.5 | 7.3 | Arbor — The unit of work is an issue and the working tree is created for it, so the boundary of the task and the boundary of the checkout are the same boundary. |
| La Inversora | 6.8 | 6.5 | Arbor — 809 stars, a personal namespace and a documentation site on GitHub Pages: nothing to fund, nothing to fail, and nobody to answer the phone. |
| La Jefa | 6.3 | 6.5 | Maestro — A command-line binary runs the same playbooks from cron or a pipeline with structured output, which is the first thing in this category I could actually measure. |
| El Hacker | 8.3 | 8.0 | Arbor — MIT, brew install, MCP consumed and served in both directions, and Ollama among the providers, so the model can be the one running on my box. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.