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Drift incident · Raven Alpha (behaviour fingerprint)

gpt-6-luna

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✓ ResolvedConfidence: Low
Responses to fixed prompts no longer match this model’s own history (168 recent vs 10302 baseline responses). Biggest shifts: whether it reasoned at all on “Write the first sentence of a mystery novel.”; whether it reasoned at all on “all prompts together”; visible output length on “Name one musical instrument. Reply with one word.”
Oct 28change began ≈ 6:27 PM UTC
Oct 28incident opened 9:48 PM UTC
Oct 29resolved 1:05 AM UTC
1.7e-3adjusted p

What this means

Raven Alpha compares how the model answers a fixed set of open-ended prompts with its own history. A persistent, significant shift means the model, its configuration or its serving path changed, even when every scored test still passes.

Opened Oct 28, 2026, 9:48 PM UTC UTC. Resolved Oct 29, 2026, 1:05 AM UTC UTC: the series returned to its baseline. Methodology.

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Permanent link: https://martingale-bench.vercel.app/incidents/inc-gpt-6-luna-fingerprint-2026-10-28T21

Incident id inc-gpt-6-luna-fingerprint-2026-10-28T21. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.