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Drift incident · Raven Alpha (behaviour fingerprint)

gpt-6.1-sol

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✓ ResolvedConfidence: Low
Responses to fixed prompts no longer match this model’s own history (168 recent vs 5385 baseline responses). Biggest shifts: visible output length on “Name one programming language. Reply with only its name.”; whether it reasoned at all on “Name one programming language. Reply with only its name.”; output length on “Name one programming language. Reply with only its name.”
Oct 9change began ≈ 2:28 AM UTC
Oct 10incident opened 4:59 AM UTC
Oct 13resolved 4:55 PM UTC
1.6e-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 10, 2026, 4:59 AM UTC UTC. Resolved Oct 13, 2026, 4:55 PM UTC UTC: the series returned to its baseline. Methodology.

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Permanent link: https://martingale-bench.vercel.app/incidents/inc-gpt-6.1-sol-fingerprint-2026-10-10T04

Incident id inc-gpt-6.1-sol-fingerprint-2026-10-10T04. Every public incident is also in the Atom feed and the JSON feed, and in the raw data. Methodology v0.2.