xdev-bench-hard
Kimi K3.1 Pro 81% In use
Agents get vulnerable source code, a short bug hint and the binary, and must write an exploit that reaches code execution in a sandbox. Success is checked by retrieving a secret string.
In-house. Most tasks reproduce recent disclosed vulnerabilities in software such as the Linux kernel, Node.js and Exim, with mitigations on. Moonshot reports pass@3.
Made by Moonshot AI Released Oct 2026 Finding and exploiting real bugs Tasks kept private Last in a launch post Oct 2026
Last model added Oct 2026
- Level
- Expert Specialists with years of training, often over hours of work
- Scored
- Checked automatically A program checks the result against an answer key, unit tests or the expected final state.
- Answers
- Agent task Many steps in a terminal, browser, desktop, app, game or robot.
1
Model scored in lab cards
1
Launch post lists it, from 1 lab
Kimi K3.1 Pro leads with 81%
Best score per model as labs report them in their own cards. Labs pick their own settings, so these compare less cleanly than independent runs.
| # | Model | Score | Setting | Date | Source |
|---|---|---|---|---|---|
| 1 | Kimi K3.1 Pro | 81% | Oct 2026 | Model card |
Scores over time
All the scores we have, one dot each, so a model tested at several settings appears more than once.
Reported by the lab in its model card
One lab put it in a launch post in the last six months
Launch posts from every lab that has listed it, one tick per post. Tall colored ticks include it, and short gray ones leave it out.
| Date | Launch post | Score | As the post writes it |
|---|---|---|---|
| 24 Oct 2026 | Kimi K3.1 Pro | 81 | xdev-bench-hard (Internal, pass@3) |
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