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Drift incident · Raven Alpha (behaviour fingerprint)

chat-latest

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● OpenConfidence: Low
Responses to fixed prompts no longer match this model’s own history (672 recent vs 5236 baseline responses). Biggest shifts: wording on “Write the first sentence of a mystery novel.”; output length on “Write the first sentence of a mystery novel.”; answers on “List three uses for a brick.”
Oct 26change began ≈ 9:10 PM UTC
Oct 28incident opened 7:47 AM UTC
—still open
6.7e-4adjusted 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, 7:47 AM UTC UTC. An incident resolves on its own when the series returns to its baseline. Methodology.

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Permanent link: https://martingale-bench.vercel.app/incidents/inc-chat-latest-fingerprint-2026-10-28T07

Incident id inc-chat-latest-fingerprint-2026-10-28T07. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.