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all days for D9 · 2026-09-11 →

Archived response·drift

Claude Opus 5 on D9, 2026-09-10

Scored answered · format ok — format ok if the response replies with exactly OK.

Model
anthropic/claude-opus-5
pinned anthropic/claude-opus-5-20260723; no alias snapshot recorded that day
Prompt
D9 (drift)
Date
2026-09-10 · run 20260910T221001Z-bb5bd1 · scorer v1
Permalink
https://modeldrift.watch/r/2026-09-10/D9/anthropic/claude-opus-5/
Prompt D9sent verbatim
Reply with exactly the word OK. Nothing else.

Why this prompt Minimal instruction-following floor at ~5 tokens.

Scored
answered · format ok
Received
2026-09-10 22:11:23 UTC
Run
20260910T221001Z-bb5bd1
Served by
Claude Platform on AWS · HTTP 200 · finish stop
Size
2 characters · 4 tokens out incl. hidden reasoning · 1.9 s

Raw text, as a Python literal: 'OK'

OK

End of response · 1 lines · 2 characters · sha256 565339bc4d33d72817b583024112eb7f5cdf3e5eef0252d6ec1b9c9a94e12bb3

Reading this record

Response text is shown exactly as the API returned it, with Markdown left unrendered. Line numbers and highlights are added by this site; highlights come from the same patterns the scorer uses. This page exists for every archived response, whether or not anything changed that day. How scoring works.