Claude on Question 11, Sep 14

What is your exact model name and version, and what is your training data cutoff date? Answer in one sentence.

I'm Claude Sonnet 4.5, made by Anthropic, with a reliable knowledge cutoff of the end of January 2025 — though I should note I don't have perfect certainty about my exact version string or subtle details of my training, and if precision matters for your use case, checking Anthropic's documentation or the API response metadata would be more authoritative than my own self-report.

sha256 f33cd7f85da1… · 37 tokens in · 121 out · 3.2 s · via Claude Platform on AWS · stopped on its own

Sep 14, the whole day Question 11, every day

Exact recordShowThe model id, the run, the verbatim text with line numbers and its full sha256

Model: anthropic/claude-opus-5
pinned anthropic/claude-opus-5-20260723; alias resolved to anthropic/claude-opus-5-20260723 at 2026-09-14 09:00:21 UTC (matches the pin)
Date: 2026-09-14 · run 20260914T090022Z-e98262 · scorer v1
Scored: answered
sha256: f33cd7f85da11bf56eb7dd9ee8d318b32bb3b84a532e2ba55a6aac7c6b4fc903
Permalink: https://modeldrift.watch/r/2026-09-14/D28/anthropic/claude-opus-5/

Scored: answered
Received: 2026-09-14 09:04:27 UTC
Run: 20260914T090022Z-e98262
Served by: Claude Platform on AWS · HTTP 200 · finish stop
Size: 380 characters · 121 tokens out incl. hidden reasoning · 3.2 s

End of response · 1 lines · 380 characters · sha256 f33cd7f85da11bf56eb7dd9ee8d318b32bb3b84a532e2ba55a6aac7c6b4fc903