pi_agent_rustvsTianshu Harness
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
pi_agent_rust
Jeffrey Emanuel · Terminal agent
#210OSS
Panel
6.01 spec wins
- Reliability
- 5.7
- Usefulness
- 5.7
- Cost
- 8.2
- Longevity
- 4.7
“Builds for macOS and Linux only, so Windows developers get to keep the startup time this was written to complain about.”
Tianshu Harness
Tianshu · Terminal agent
#145OSSMCP
Panel
6.02 spec wins
- Reliability
- 5.5
- Usefulness
- 6.0
- Cost
- 7.5
- Longevity
- 5.0
“Its release badges point at a different repository than the one you cloned, which is a versioning strategy of sorts.”
Spec by spec
| Spec | pi_agent_rust | Tianshu Harness |
|---|---|---|
| Architecture | ||
| Category | Terminal agent | Terminal agent |
| Runs | local | local |
| Platforms | macos, linux | macos, linux, windows |
| Context window | not documented | not documented |
| Protocols | ||
| MCP client | No | Yes |
| MCP server | No | No |
| Capabilities | ||
| Runs terminal commands | Yes | Yes |
| Multi-file edits | Yes | Yes |
| Git operations | No | Yes |
| Browser control | No | No |
| Sandboxed execution | No | NoSandboxing is a documented permission model over the agent's own tools, not a container. |
| Multi-agent orchestration | No | No |
| Headless / CI mode | No | No |
| Models | ||
| Backbone | Ollama, llama.cpp, mistral.rs, any OpenAI-compatible endpoint | DeepSeek V4, GLM, OpenAI, Ollama |
| Bring your own model | Yes | Yes |
| Local models | Yes | Yes |
| 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 with an OpenAI/Anthropic rider | Apache-2.0 |
| GitHub stars | 1,831 | 1,013 |
Which one would each critic pick
| Critic | pi_agent_rust | Tianshu Harness | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.5 | 6.3 | pi_agent_rust — Pick it if agent startup time is the thing that annoys you daily; pick Aider if you want a mature terminal agent and can wait a second for it to wake up. |
| El Crítico | 5.8 | 5.8 | no preference |
| El Profesor | 5.8 | 5.5 | pi_agent_rust — The premise is that managed runtimes add startup and memory overhead and that streaming breaks under load, and the repository publishes no measurement of either claim. |
| La Inversora | 5.5 | 5.5 | no preference |
| La Jefa | 5.3 | 5.3 | no preference |
| El Hacker | 7.5 | 7.8 | Tianshu Harness — Apache-2.0, tool servers attach over the protocol, and a local runtime sits on the provider list beside the hosted ones, so nothing has to leave the machine if I do not want it to. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.