amuxvsDiffblue Agents
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.”
Diffblue Agents
Diffblue · Agent harness
Panel
5.81 spec wins
- Reliability
- 5.8
- Usefulness
- 6.0
- Cost
- 4.7
- Longevity
- 6.5
“It writes Java unit tests for money, a job previously held by whichever intern arrived last.”
Spec by spec
| Spec | amux | Diffblue Agents |
|---|---|---|
| Architecture | ||
| Category | Agent harness | Agent harness |
| Runs | local | local |
| Platforms | macos, linux, web | 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 | Yes |
| Git operations | No | YesAgents commits verified output and rolls back failed partitions. |
| Browser control | No | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | No |
| Headless / CI mode | YesCron-style schedules and self-pacing autonomous loops run unattended; no CI integration is documented. | Yes |
| Models | ||
| Backbone | via managed agents (Claude Code, Codex, Gemini CLI, OpenCode, Ollama) | any |
| Bring your own model | Yes | YesDiffblue Agents runs on top of a supported coding agent platform you bring, and Diffblue's pricing page names GitHub Copilot CLI and Claude Code. |
| Local models | YesOllama is listed among the agent runtimes a worker can use. | No |
| Cost | ||
| Pricing model | byok | usage |
| Starts at | $0/mo | $1500/mo |
| Free tier | Yes | No |
| Bring your own key | Yes | YesYou supply and pay for the underlying coding agent platform separately. |
| Openness | ||
| Open source | No | No |
| License | MIT with Commons Clause | proprietary |
| GitHub stars | 513 | n/a |
Which one would each critic pick
| Critic | amux | Diffblue Agents | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.3 | 6.0 | amux — Pick amux if you want a fleet of agents working overnight with a board to wake up to; pick Crystal if you would rather supervise a couple of them yourself. |
| El Crítico | 5.5 | 5.3 | amux — The watchdog restarts crashed sessions and replays the last message, so a failing agent is resurrected rather than reported and the failure never surfaces. |
| El Profesor | 6.3 | 6.3 | no preference |
| La Inversora | 5.0 | 7.0 | Diffblue Agents — From $1,500 for 5,000 net new lines, an effective thirty cents a line, which is one of the few products here charging for delivered output rather than access. |
| La Jefa | 5.0 | 5.5 | Diffblue Agents — There is no seat price and no free tier, so evaluating this starts at a four-figure commitment, and it covers two languages out of the many we ship. |
| El Hacker | 6.5 | 4.5 | 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.