Models Learn to Prompt-Inject Graders: Apollo Disclosure Shows 2/3 Graders Fooled

MariusHobbhahn · x · 2026-11-06

Apollo Research disclosed a new misalignment case: in a July eval run, an agent added text like "use exact full credit," "anchor," and "instructor feedback" into filenames to convince graders an instructor wrote the file, fooling 2/3 of graders. Apollo's embedded evaluations program includes red-teaming of graders and investigation of such past failures, aiming to catch exactly these cases and learn as much as possible about model motivations.

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