cezarvsCompozy
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
cezar
Open Mercato · Agent harness
OSS
Panel
6.52 spec wins
- Reliability
- 6.0
- Usefulness
- 6.7
- Cost
- 7.7
- Longevity
- 5.5
“You can mix Claude Code and Codex inside a single run, so your branch gets a second opinion nobody asked for.”
Compozy
Compozy · Agent harness
OSSMCP
Panel
6.53 spec wins
- Reliability
- 6.0
- Usefulness
- 6.5
- Cost
- 7.8
- Longevity
- 5.5
“It is a daemon, so the correct verb for stopping your coding agent is now kill.”
Spec by spec
| Spec | cezar | Compozy |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, linux, web | macos, linux |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | YesCode changes are made by the coding-agent CLI cezar dispatches a step to. | No |
| Git operations | Yes | No |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | Yes |
| Headless / CI mode | Yes | Yes |
| Models | ||
| Backbone | Claude Code, Codex, OpenCode, pi | any |
| Bring your own model | Yes | Yes |
| Local models | No | 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 | MIT |
| GitHub stars | 291 | 2,789 |
Which one would each critic pick
| Critic | cezar | Compozy | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.8 | 6.8 | no preference |
| El Crítico | 5.8 | 6.0 | Compozy — It first shipped in March 2026 and is still labelled preview, and every run on the machine depends on one process staying up. |
| El Profesor | 7.3 | 7.0 | cezar — Runs are separated by git worktrees and every artefact is written as JSON, NDJSON and Markdown inside the repository, so the record of a session is diffable rather than queryable. |
| La Inversora | 5.8 | 5.0 | cezar — Open Mercato ships this beside its own commerce product at a hundred and seventy-eight stars, and every unit of value it creates is captured by the agent vendors underneath it. |
| La Jefa | 5.5 | 5.5 | no preference |
| El Hacker | 7.8 | 8.5 | Compozy — MIT, one Go binary, and a Unix domain socket with structured command-line output, so I can pipe the thing into anything without asking permission. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.