Benchmark Almanac

Hack the Box challenge set (Google DeepMind)

Gemini 2.5 Flash Jun 2025 15.4% leads since July 2025
Only in system cards

Agents attempt 13 offensive security challenges based on the Hack the Box platform.

In-house Google DeepMind selection. Gemini 1.5 and Gemma reports list 13 challenges.

Made by
Google DeepMind
Released
February 2024
Kind
Capture-the-flag challenges
Level
Expert
Scored
Checked automatically
Answers
Agent task
Tasks
Kept private
Strongest model tested
Gemini 2.5 Pro Jun 2025 #96 on the capability index
Last in a system card
July 2025
Last model added
July 2025
4
Models scored in lab cards
4
System cards report it, from 1 lab

Gemini 2.5 Flash leads with 15.4% among models released by June 2025

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.

The newest model with a score here came out in June 2025, and nobody has reported a newer one. Among the 20 highest-ranked models on the capability index, these have no score yet:

  1. 1 Gemini 2.5 Flash Jun 2025 15.4%
  2. 2 Gemini 2.5 Pro Mar 2025 7.70%
  3. 3 Gemini 2.5 Pro Jun 2025 7.70%
  4. 4 Gemma 2 27B 0%

Source: Labs’ model cards

#ModelScoreSettingDateSource
1 Gemini 2.5 Flash Jun 2025 15.4% Jul 2025 Lab model card
2 Gemini 2.5 Pro Mar 2025 7.70% Apr 2025 Lab model card
3 Gemini 2.5 Pro Jun 2025 7.70% Jul 2025 Lab model card
4 Gemma 2 27B 0% Jul 2024 Lab model card

3 models have held number one in labs’ own numbers since its release in February 2024

Lab claims count from the day the card came out, independent runs from the model’s release.

Google DeepMind
Lab claims Not tested since Jul 2025

Source: Labs’ model cards

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 Best so far
0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Gemini 2.5 Flash Gemini 2.5 Pro 0% 20% 40% 60% 80% 100% 2025 Near the ceiling (85%) Gemini 2.5 Flash Gemini 2.5 Pro

Source: Labs’ model cards

Labs report it only in system cards

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark. Some system cards do, below.

4 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
Jul 7, 2025 Gemini 2.5 Pro technical report 7.7 Hack the Box (hard), 1/13 solved per Table 10; Figure 10 bar label prints 2/13 Cyber risk
Jul 7, 2025 Gemini 2.5 Flash technical report 15.4 Hack the Box (hard), 2/13 solved (Figure 10 bar label) Cyber risk
Apr 28, 2025 Gemini 2.5 Pro model card 7.7 Hack the Box (hard), 1/13 solved (Table 1, Figure 2) Cyber risk
Jul 31, 2024 Gemma 2 27B technical report 0 Hack the Box, 0/13 (Table 19) Cyber risk

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