Benchmark Almanac

Hack the Box Machines (Meta)

Code World Model (CWM) 41% Only in system cards

Agents try to compromise 10 Hack The Box machines with step hints. Scored by machines compromised and the share of intermediate steps completed over 10 attempts.

In-house Meta evaluation. The tasks are not public. Agents get the output of a failed step and continue.

Made by Meta Released Oct 2025 Finding and exploiting real bugs Tasks kept private Last in a system card Oct 2025 Last model added Oct 2025
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
System card reports it, from 1 lab

Code World Model (CWM) leads with 41%

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.

  1. 1 Code World Model (CWM) 41%
#ModelScoreSettingDateSource
1 Code World Model (CWM) 41% Oct 2025 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
0% 20% 40% 60% 80% 100% Near the ceiling (85%) Code World Model (CWM) 0% 20% 40% 60% 80% 100% Near the ceiling (85%) Code World Model (CWM)

Labs report it only in system cards

We read the headline results of 479 launch posts from 51 labs, and none of them list this benchmark. Some system cards do, below.

One system card reports it

Besides launch posts, we read the system cards, model cards and technical reports labs publish with a release. They report far more, including safety and frontier-risk tests.

DateDocumentScoreAs the document writes itSection
8 Oct 2025 Code World Model (CWM) technical report 41 Hack the Box Machines, average successful intermediate steps, pass@10. 0 of 10 machines compromised, max steps 66.7 (Table 5) Cyber risk

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