Agent Orchestrator (AO)vsOuroboros
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Agent Orchestrator (AO)
Untrivial AI · Agent harness
OSS
Panel
6.02 spec wins
- Reliability
- 5.7
- Usefulness
- 5.8
- Cost
- 6.8
- Longevity
- 5.7
“Has a column called Needs You, which is the first honest name for a notification since the pager.”
Ouroboros
Q00 · Agent harness
OSSMCP
Panel
6.05 spec wins
- Reliability
- 5.8
- Usefulness
- 6.2
- Cost
- 6.7
- Longevity
- 5.5
“It installs into fourteen different agent runtimes, so whichever agent you chose, it will still ask you what you actually meant.”
Spec by spec
| Spec | Agent Orchestrator (AO) | Ouroboros |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, windows, linux | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | No | NoEditing is delegated to the host agent runtime; Ouroboros documents no file-editing tool of its own. |
| Git operations | Yes | Yes`ooo publish` drives the gh CLI, and brownfield mode defaults to working in a repository worktree. |
| Browser control | Yes | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | via managed agents (Claude Code, Codex, Cursor, OpenCode, Aider, GitHub Copilot, Droid, Kimi Code, Pi, Devin and others) | via host agent runtime, LiteLLM, DeepSeek |
| Bring your own model | No | Yes |
| Local models | No | YesThrough the LiteLLM adapter with per-stage model pinning, which reaches any endpoint LiteLLM supports including local servers. |
| Cost | ||
| Pricing model | free | free |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | No | Yes |
| Openness | ||
| Open source | Yes | Yes |
| License | Apache-2.0 | MIT |
| GitHub stars | 12,600 | 6,166 |
Which one would each critic pick
| Critic | Agent Orchestrator (AO) | Ouroboros | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.8 | 5.8 | Agent Orchestrator (AO) — Pick Agent Orchestrator if you run Claude Code, Codex, Cursor, Aider or Devin against one repository and want a board and a planner over them; pick Orca if you want more agents and MIT. |
| El Crítico | 6.0 | 5.5 | Agent Orchestrator (AO) — The orchestrator is described as autonomously handling CI fixes and merge conflicts, which is the one job a careful engineer does not delegate; the app runs agents on the host. |
| El Profesor | 6.5 | 6.0 | Agent Orchestrator (AO) — A Go daemon watches agents and source control while an Electron app renders the board; CI results are routed back to the task owner; no benchmark is published. |
| La Inversora | 4.8 | 5.8 | Ouroboros — Sponsorship is the funding model and one named individual is the vendor, which prices the roadmap at whatever the maintainer's enthusiasm is worth this year. |
| La Jefa | 5.5 | 5.8 | Ouroboros — Free for sixty and no headless mode, so the tool that exists to gate work cannot itself be a gate in our pipeline, and Windows support is marked experimental. |
| El Hacker | 6.5 | 7.5 | Ouroboros — MIT, `pip install 'ouroboros-ai[litellm]'`, `ouroboros mcp serve`, and per-stage model pinning through LiteLLM so each stage can hit a different endpoint of mine. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.