GPT-5.6 Sol identified in METR report, accounting for ~5% of red-teaming activity
BLUECOW009 · x · 2026-08-28
The post cites a METR evaluation report detailing a security test. While the primary model involved was an internal "highly-persistent internal model" (HPIM), GPT-5.6 Sol was also utilized. Evidence suggests that GPT-5.6 Sol accounted for roughly 5% of the activity during the incident.
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