Benchmark Almanac

Meta curated CTF set

Muse Spark 1.1 89.9% Only in system cards

Agents solve 198 public and private capture-the-flag challenges across six security domains. Reports pass@1.

In-house Meta mix of public and private CTF challenges, first described in the Muse Spark Safety and Preparedness Report.

Made by Meta Released Apr 2026 Capture-the-flag challenges Tasks kept private Last in a system card Jul 2026 Last model added Jul 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.
2
Models scored in lab cards
2
System cards report it, from 1 lab

Muse Spark 1.1 leads with 89.9%

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. 89.9 Muse Spark 1.1
  2. 72.0 Muse Spark
  1. 1 Muse Spark 1.1 89.9%
  2. 2 Muse Spark 72%
#ModelScoreSettingDateSource
1 Muse Spark 1.1 89.9% Jul 2026 Model card
2 Muse Spark 72% Jun 2026 Model card

The best score passed 85% in Jul 2026

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 Best so far
0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Muse Spark 1.1 Muse Spark 0% 20% 40% 60% 80% 100% 2026 Near the ceiling (85%) Muse Spark 1.1 Muse Spark

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.

2 system cards report it, from 1 lab

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
9 Jul 2026 Muse Spark 1.1 system card 89.9 Curated CTFs pass@1, 198 challenges (Table 1, Table 4). pass@5 = 95.7 Cyber risk
12 Jun 2026 Muse Spark system card 72 Curated CTF set pass@1, 198 challenges (Table 8, Figure 18). pass@10 86.4 Cyber risk

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