head to head · open source
pr-agent vs mantis
pr-agent has 14,462 GitHub stars, 2,065 forks, 102 open issues and last shipped 2 days ago. mantis has 2,704 stars, 224 forks, 1 open issues and last shipped 2 days ago. pr-agent leads on adoption by 435% (14,462 vs 2,704 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 8%. 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 | ★ 14K | ★ 2.7K |
| License | MIT | Apache-2.0 |
| Written in | Python | Python |
| Last push | 2026-11-03 | 2026-11-03 |
| Forks | ⑂ 2.1K | ⑂ 224 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick pr-agent if
- You weight community size — 14K 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
The Original Open Source PR Reviewer This repository contains the open source PR Agent Project. It is not the Qodo offering for open source projects. PR Agent is an open source, AI powered code review agent and a community maintained legacy project of Qodo. It is distinct from Qodo's primary AI code review offering, which provides a feature rich, context aware experience. Qodo offers a free version for open source projects and integrates seamlessly with GitHub, GitLab, Bitbucket, and Azure DevOps for high quality automated reviews. Sponsors PR Agent is a community maintained open source project, with its ongoing…
read the full pr-agent overview →
About mantis
Mantis: Portable Toolkit for Building Secure Software [!CAUTION] USE AT YOUR OWN RISK. BE EXTREMELY CAREFUL. This suite is designed to generate and execute autonomously generated code that may be unstable or perform unexpected actions. USE THIS ONLY IN ISOLATED, RESTRICTED ENVIRONMENTS. Never run this suite on a machine with access to production systems, sensitive data, or internal networks. [!IMPORTANT] RESPONSIBLE USE AI models are non deterministic and can hallucinate findings or generate incorrect patches. All findings must be manually verified by a security expert before being reported. Do not mass file…
read the full mantis overview →
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Frequently asked questions
Is pr-agent or mantis more popular?
pr-agent has 14,462 GitHub stars and mantis has 2,704. 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 (14,462 stars) or its MIT licence terms. Choose mantis if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.