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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 6558 baseline responses). Biggest shifts: whether it reasoned at all on “Name one fruit. Reply with one word.”; visible output length on “Name one color. Reply with one word.”; whether it reasoned at all on “Name one color. Reply with one word.”
Oct 11change began ≈ 6:14 AM UTC
Oct 12incident opened 2:03 PM UTC
Oct 13resolved 11:12 AM UTC
4.8e-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 12, 2026, 2:03 PM UTC UTC. Resolved Oct 13, 2026, 11:12 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-2026-10-12T14

Incident id inc-gpt-6-luna-fingerprint-2026-10-12T14. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.