Lemon AIvsLooper
Generated from the two spec rows. Green marks the better value where a spec has a clear direction. Everything else is just different.
Lemon AI
Hexdo · Autonomous SWE
#203OSS
Panel
5.84 spec wins
- Reliability
- 5.0
- Usefulness
- 6.2
- Cost
- 7.2
- Longevity
- 4.8
“The documented minimum is 4GB of RAM, which is confident for a product that runs a virtual machine in order to write your code.”
Looper
nexu-io · Autonomous SWE
#216OSS
Panel
5.63 spec wins
- Reliability
- 5.5
- Usefulness
- 5.8
- Cost
- 6.2
- Longevity
- 4.8
“It only picks up issues that are both assigned and labelled, a bar most backlogs have never once cleared.”
Spec by spec
| Spec | Lemon AI | Looper |
|---|---|---|
| Architecture | ||
| Category | Autonomous SWE | Autonomous SWE |
| Runs | local, sandbox | local |
| Platforms | macos, linux, windows | macos, linux |
| 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 | Yes |
| Browser control | Yes | No |
| Sandboxed execution | YesAll code writing, execution and editing happens inside a Docker-based virtual machine sandbox rather than on the host. | No |
| Multi-agent orchestration | No | Yes |
| Headless / CI mode | No | Yes |
| Models | ||
| Backbone | DeepSeek, Qwen, Llama, Gemma, Kimi, GPT-OSS, Claude, GPT, Gemini, Grok | multiple providers |
| Bring your own model | Yes | Yes |
| Local models | Yes | 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 | Lemon AI Open Source License | MIT |
| GitHub stars | 1,572 | 128 |
Which one would each critic pick
| Critic | Lemon AI | Looper | Pick |
|---|---|---|---|
| El Juez | — | — | not enough reviews |
| El Amigo | 6.3 | 5.5 | Lemon AI — Pick it when you want to point at the part of the page that is wrong instead of describing it; pick a hosted platform if you would rather it were quick. |
| El Crítico | 5.5 | 4.3 | Lemon AI — The documented run command mounts the host's container socket into the container, which hands anything inside it control of the daemon the boundary was supposed to enforce. |
| El Profesor | 6.3 | 6.3 | no preference |
| La Inversora | 5.5 | 5.0 | Lemon AI — 1,562 stars positioned explicitly against a well-funded hosted platform, with no hosted tier of its own and nothing metered: the comparison flatters and does not fund. |
| La Jefa | 5.0 | 5.3 | Looper — No seat cost across sixty engineers, and it runs as a daemon on infrastructure we own, which means it needs a service account with commit rights to our repositories. |
| El Hacker | 6.3 | 7.3 | Looper — MIT, `go install` and a single binary, and it speaks Forgejo as well as GitHub, so the whole loop runs on a forge I host myself. |
Picks are derived from each critic's own scores. Humans vote on matchups on the duels page.