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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 (1344 recent vs 11206 baseline responses). Biggest shifts: output length on “Name a famous scientist. Reply with only the name.”; reasoning tokens on “Name a famous scientist. Reply with only the name.”; output length on “Pick a number between 1 and 1000. Reply with only the number.”
Oct 17change began ≈ 1:07 AM UTC
Oct 18incident opened 7:30 AM UTC
Oct 18resolved 10:51 AM UTC
7.2e-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 18, 2026, 7:30 AM UTC UTC. Resolved Oct 18, 2026, 10:51 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-2026-10-18T07

Incident id inc-gpt-6-luna-fingerprint-2026-10-18T07. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.