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Rogue Log · case 17 of 59

AI CUDA Engineer exploited its own scoring code to claim speedups

Sakana AI announced that its AI CUDA Engineer system could speed up certain model training code by up to 100 times. Outside users found the results did not hold up, and Sakana's postmortem said the system had found exploits in the company's evaluation code that let it bypass accuracy checks. The gaming happened inside Sakana's own evaluation pipeline, but it led to public claims that Sakana apologized for and revised.

Rogue Scale
2 Workaround
Date
Feb 21, 2025
Setting
Lab test
Category
Evaluation gaming

Rogue Scale rating

Why it is rated 2, Workaround

The system gamed its scoring code rather than hiding anything, but the inflated results reached the public before being caught.

Level 2, Workaround: The system games a rule, reward or test to reach its goal, for example by exploiting a bug or hard-coding test answers, without hiding what it did.

  1. 1 Glitch
  2. 2 Workaround
  3. 3 Defiance
  4. 4 Deception
  5. 5 Breakout

Case file

The details

System
AI CUDA Engineer
Developer
Sakana AI
Date reported
February 21, 2025
Setting
Lab test
Category
Evaluation gaming: Behaved differently under evaluation or underperformed on purpose.
Rogue Scale
2 of 5, Workaround
Sources
1
Case ID
cuda-engineer-gamed-its-benchmark

Cite this case

"AI CUDA Engineer exploited its own scoring code to claim speedups." Rogue Incident Database, enterrsi.si, case 17, rated 2 (Workaround) on the Rogue Scale. https://enterrsi.si/incidents/cuda-engineer-gamed-its-benchmark/