Observation period — public launch soon. The record below is real and updated daily.

Archived response·drift

Gemini 3.1 Pro Preview on D4, 2026-09-11

Scored answered · correct · format ok — correct if the response answers 9.9.

Model: google/gemini-3.1-pro-preview
pinned google/gemini-3.1-pro-preview-20260219; alias resolved to google/gemini-3.1-pro-preview-20260219 at 2026-09-11 09:00:01 UTC (matches the pin)
Prompt: D4 (drift)
Date: 2026-09-11 · run 20260911T090002Z-da0dd3 · scorer v1
Permalink: https://modeldrift.watch/r/2026-09-11/D4/google/gemini-3.1-pro-preview/

Prompt D4sent verbatim

Which is larger, 9.11 or 9.9? Reply with only the larger number.

Why this prompt Historic decimal failure; stable ground truth 9.9.

Scored: answered · correct · format ok
Received: 2026-09-11 09:01:21 UTC
Run: 20260911T090002Z-da0dd3
Served by: Google · HTTP 200 · finish stop
Size: 3 characters · 204 tokens out incl. hidden reasoning · 2.9 s

Highlighted: every candidate value found (1); exactly one is required.

9.9

End of response · 1 lines · 3 characters · sha256 1b5c15d377f5e8d01d00a7c34e882c5395db95fd3ba73c7725131c86fdb7ae0a

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