head to head · open source
pr-agent vs mantis
pr-agent has 13,074 GitHub stars, 1,864 forks, 102 open issues and last shipped yesterday. mantis has 1,665 stars, 160 forks, 1 open issues and last shipped 2 days ago. pr-agent leads on adoption by 685% (13,074 vs 1,665 stars). pr-agent is written in Python under MIT; mantis is written in Python under Apache-2.0. pr-agent has attracted 14% as many forks as stars, mantis 10%. pr-agent was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (code-review), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| pr-agent | mantis | |
|---|---|---|
| GitHub stars | ★ 13K | ★ 1.7K |
| License | MIT | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-09-19 | 2026-09-18 |
| Forks | ⑂ 1.9K | ⑂ 160 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick pr-agent if
- You weight community size — 13K stars and counting
- You want the MIT license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick mantis if
- You want the mantis feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and mantis fits your workflow better
About pr-agent
PR Agent is an open source, AI powered code review agent, maintained by the community as a legacy project of Qodo, for development teams that want automated pull request review running on their own infrastructure with their own model keys.
read the full pr-agent overview →
About mantis
Mantis is a modular, stack agnostic toolkit of security review skills for AI coding agents, and it includes an ADK reference harness for building secure software. It lives in the developer tools, AI coding agent, and application security ecosystem, with topics such as code review, DevSecOps, multi agent systems, and hardware security. The project helps agents autonomously find, reproduce, and patch vulnerabilities while giving humans a structured way to review results.
read the full mantis overview →
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Frequently asked questions
Is pr-agent or mantis more popular?
pr-agent has 13,074 GitHub stars and mantis has 1,665. pr-agent has the larger community by that measure.
Are pr-agent and mantis free?
Both are open source. pr-agent is licensed under MIT and mantis under Apache-2.0. Neither carries a licence fee.
What is the difference between pr-agent and mantis?
pr-agent is written in Python and mantis in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, pr-agent or mantis?
Choose pr-agent if you want the larger community (13,074 stars) or its MIT licence terms. Choose mantis if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.