Diracvspi
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Dirac
Dirac · Terminal agent
#140OSS
Panel
6.83 spec wins
- Reliability
- 6.2
- Usefulness
- 7.2
- Cost
- 7.7
- Longevity
- 6.0
“Its browser control works by screenshots and coordinates, which is how we automated the web before anyone thought to ask the page.”
pi
Earendil Inc. · Terminal agent
#9OSS
Panel
6.82 spec wins
- Reliability
- 6.5
- Usefulness
- 6.5
- Cost
- 7.3
- Longevity
- 7.0
“A coding agent that ships themes, which is the first time anyone has cared what the terminal looks like while a file gets deleted.”
Spec by spec
| Spec | Dirac | pi |
|---|---|---|
| Architecture | ||
| Category | Terminal agent | Terminal agent |
| Runs | local | local |
| Platforms | macos, linux, windows | 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 | YesWork can be isolated in a git worktree with integration and cleanup controls. | No |
| Browser control | YesBrowser interaction is screenshot and coordinate based. | No |
| Sandboxed execution | No | No |
| Multi-agent orchestration | Yes | No |
| Headless / CI mode | No | Yes |
| Models | ||
| Backbone | Anthropic, OpenAI, OpenRouter, Gemini, Groq, Mistral, any OpenAI-compatible endpoint | OpenAI, Anthropic, Google, OpenRouter, llama.cpp |
| 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 | Apache-2.0 | MIT |
| GitHub stars | 1,518 | 111,339 |
Which one would each critic pick
| Critic | Dirac | pi | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 7.0 | 7.5 | pi — Pick pi if you want a terminal agent small enough to read in an afternoon and extend in TypeScript; pick OpenCode if your workflow already depends on MCP servers. |
| El Crítico | 6.3 | 6.8 | pi — Extensions are TypeScript modules loaded into the agent's own process, so a package is a supply chain, and the install line already says --ignore-scripts. |
| El Profesor | 7.3 | 7.3 | no preference |
| La Inversora | 6.5 | 5.5 | Dirac — A first release five months old, 1,476 stars, no price published anywhere and no hosted component: a project that has not yet chosen a business model. |
| La Jefa | 5.8 | 5.5 | Dirac — Nothing per seat for sixty engineers, and a second cheaper model handles compaction and permission triage, which is the only deliberate cost control I have seen this month. |
| El Hacker | 7.8 | 8.5 | pi — MIT TypeScript, extensions that add tools, commands and UI, /llama for llama.cpp on my box, ANTHROPIC_API_KEY in the environment, and packages to share it all. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.