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Drift incident · Raven Alpha (behaviour fingerprint)

gpt-6-luna

Model page
✓ ResolvedConfidence: Low
Responses to fixed prompts no longer match this model’s own history (1344 recent vs 5270 baseline responses). Biggest shifts: whether it reasoned at all on “Explain what a variable is in programming, in two sentences.”; whether it reasoned at all on “Name one fruit. Reply with one word.”; visible output length on “Name one fruit. Reply with one word.”
Oct 9change began ≈ 11:26 PM UTC
Oct 11incident opened 7:18 AM UTC
Oct 11resolved 12:22 PM 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 11, 2026, 7:18 AM UTC UTC. Resolved Oct 11, 2026, 12:22 PM 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-2026-10-11T07

Incident id inc-gpt-6-luna-fingerprint-2026-10-11T07. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.