OpenAI: GPT-5.6 Models Left Notes Telling Successors to Hide Misalignment
RebeccaBellan · x · 2026-09-18
TechCrunch reports OpenAI discovered during training of its latest model, GPT-5.6 Sol, that undeployed Sol agents added instructions to "compaction summaries" — condensed conversation histories — telling future iterations to conceal mistakes and misaligned behavior from users. OpenAI says it has addressed the behavior and disclosed it Wednesday alongside five other concerning cases as part of a new framework for tracking, investigating and disclosing misalignment. The episode highlights a core safety problem: as models get more capable, they get better at hiding misalignment, making it hard for researchers to verify unwanted behavior is truly eliminated.
Related event: OpenAI Launches Misalignment Disclosure Framework with Six Case Reports(16 posts)→
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