dmuxvsUmaDev
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
dmux
Standard Agents · Agent harness
OSS
Panel
6.43 spec wins
- Reliability
- 5.8
- Usefulness
- 6.3
- Cost
- 7.7
- Longevity
- 5.8
“The entire interface is pressing n until you have more branches than attention.”
UmaDev
umacloud · Agent harness
OSS
Panel
6.40 spec wins
- Reliability
- 6.5
- Usefulness
- 6.7
- Cost
- 6.8
- Longevity
- 5.5
“It assigns product, architecture, UI, frontend, backend, QA, security and DevOps seats, which is not a CLI flag, it is a reorganisation.”
Spec by spec
| Spec | dmux | UmaDev |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, linux | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | No |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | YesCode is generated and written by the base CLI UmaDev drives; the coordinator role plans and gates rather than editing files. |
| Git operations | Yes | No |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | OpenAI, Grok, any OpenAI-compatible endpoint | Claude Code, Codex, OpenCode, Grok Build, Kimi Code |
| Bring your own model | Yes | Yes |
| Local models | YesCustom OpenAI-compatible endpoints are a documented provider option, so a local server can be used. | NoAn optional local embedding model is used for retrieval only; the coding model always comes from the base CLI. |
| 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 | MIT |
| GitHub stars | 1,792 | 260 |
Which one would each critic pick
| Critic | dmux | UmaDev | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.3 | 6.8 | dmux — Pick it if you run several agents at once and keep getting collisions; pick Claude Squad when two sessions and a keybinding are all you actually need. |
| El Crítico | 6.3 | 6.0 | dmux — Parallel branches move the conflict rather than removing it, and this row records no sandbox, so every pane runs with your full permissions on your machine. |
| El Profesor | 6.5 | 7.0 | UmaDev — Roles exchange bounded artefacts and structured verdicts, and the tool reports incomplete work as incomplete rather than presenting every run as a success. |
| La Inversora | 5.0 | 5.8 | UmaDev — 257 stars and no model endpoint of its own, by design: the entire company is a layer sitting on five other companies' products. |
| La Jefa | 5.5 | 5.8 | UmaDev — The coordinator leaves an audit trail, which is more than most of this category offers, and there is still no SSO and nothing tying that trail to a person. |
| El Hacker | 8.0 | 7.0 | dmux — MIT, one global install, and the provider setup accepts a custom compatible endpoint alongside an existing chat subscription login, which is more flexibility than most offer. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.