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Drift incident · Raven Alpha (behaviour fingerprint)

chat-latest

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✓ ResolvedConfidence: Low
Responses to fixed prompts no longer match this model’s own history (84 recent vs 1484 baseline responses). Biggest shifts: answers on “Name one fruit. Reply with one word.”; output length on “Name one fruit. Reply with one word.”; wording on “Explain what a variable is in programming, in two sentences.”
Oct 7change began ≈ 7:45 PM UTC
Oct 7incident opened 11:06 PM UTC
Oct 17resolved 7:28 PM UTC
8.4e-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 7, 2026, 11:06 PM UTC UTC. Resolved Oct 17, 2026, 7:28 PM UTC UTC: the series returned to its baseline. Methodology.

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Permanent link: https://martingale-bench.vercel.app/incidents/inc-chat-latest-fingerprint-2026-10-07T23

Incident id inc-chat-latest-fingerprint-2026-10-07T23. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.