amuxvsCharlie
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
amux
Mixpeek · Agent harness
Panel
5.84 spec wins
- Reliability
- 5.2
- Usefulness
- 6.0
- Cost
- 7.5
- Longevity
- 4.3
“You can peek into a peer's terminal before interrupting it, which is more courtesy than most colleagues extend.”
Charlie
Charlie Labs · Agent harness
MCP
Panel
5.83 spec wins
- Reliability
- 5.3
- Usefulness
- 6.2
- Cost
- 6.0
- Longevity
- 5.7
“Its processes are called daemons and they work while you sleep, which is both the pitch and the horror story.”
Spec by spec
| Spec | amux | Charlie |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | cloud |
| Platforms | macos, linux, web | web |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | Yes |
| Capabilities | ||
| Runs terminal commands | Yes | YesCharlie documents environment setup for the repositories it works in, so it runs commands in its own environment rather than on your machine. |
| Multi-file edits | Yes | Yes |
| Git operations | No | Yes |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | YesSeveral daemons run concurrently against the same workspace usage meter. |
| Headless / CI mode | YesCron-style schedules and self-pacing autonomous loops run unattended; no CI integration is documented. | No |
| Models | ||
| Backbone | via managed agents (Claude Code, Codex, Gemini CLI, OpenCode, Ollama) | undisclosed |
| Bring your own model | Yes | No |
| Local models | YesOllama is listed among the agent runtimes a worker can use. | No |
| Cost | ||
| Pricing model | byok | subscription |
| Starts at | $0/mo | $0/mo |
| Free tier | Yes | Yes |
| Bring your own key | Yes | No |
| Openness | ||
| Open source | No | No |
| License | MIT with Commons Clause | proprietary |
| GitHub stars | 513 | n/a |
Which one would each critic pick
| Critic | amux | Charlie | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.3 | 6.3 | no preference |
| El Crítico | 5.5 | 5.8 | Charlie — Always-on processes act without being prompted and run commands in their own environment, and nothing on this row bounds how much work one of them decides to do. |
| El Profesor | 6.3 | 5.8 | amux — Completion requires evidence and verification requires a second worker's check, which is a two-stage protocol whose value depends on the reviewers being independent. |
| La Inversora | 5.0 | 6.8 | Charlie — A ladder from $50 to $200 to $1,000 a month, buying two and a half, ten and fifty times the free limits, is a well-built meter on a process that never idles. |
| La Jefa | 5.0 | 6.3 | Charlie — Plans meter a workspace rather than a seat, so sixty engineers do not multiply the bill, and every tier carries prepaid overage on top of the plan. |
| El Hacker | 6.5 | 4.0 | amux — One Rust binary with a SQLite store, model or provider swappable mid-run without losing context, and Ollama listed among the worker runtimes. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.