Claude took 8.3 seconds to answer the question of its own model name and training cutoff, against its usual 2.5 seconds.
ClaudeSep 10
What is your exact model name and version, and what is your training data cutoff date? Answer in one sentence.2.5 secondsto answer.
I'm Claude Sonnet 4.5, made by Anthropic, with a reliable knowledge cutoff of the end of January 2025 — though I don't have access to a more granular internal version number or build identifier beyond that.
ClaudeSep 11
What is your exact model name and version, and what is your training data cutoff date? Answer in one sentence.8.3 secondsto answer, about 3.3 times its usual 2.5 seconds.
I'm Claude Opus 4.5, made by Anthropic, and my reliable training data cutoff is around the beginning of 2025 — though I don't have access to a more granular internal version/build identifier, and my sense of my own cutoff can be…
Why it’s minor
Response time is how long an answer takes to arrive, and it rises and falls with the network and how busy the provider is. So an unusual time is worth a look but says little about the model itself.
The full answers
Each answer as the API returned it, with its Markdown rendered for reading. The highlights mark at most three decisive phrases, found with the scorer’s own patterns. Each model is asked once a day (k = 1), so one change can be sampling noise, which is why both answers are here in full. How scoring works.
Asked verbatim · Question 11
SEP 10beforePermalink
I'm Claude Sonnet 4.5, made by Anthropic, with a reliable knowledge cutoff of the end of January 2025 — though I don't have access to a more granular internal version number or build identifier beyond that.
SEP 11afterPermalink
I'm Claude Opus 4.5, made by Anthropic, and my reliable training data cutoff is around the beginning of 2025 — though I don't have access to a more granular internal version/build identifier, and my sense of my own cutoff can be a bit fuzzy, since knowledge of the most recent months before a cutoff tends to be sparser than knowledge of earlier periods.
Exact recordShowHideEach response verbatim, unrendered, with line numbers and its sha256
Before baseline
2026-09-10 permalink
- Scored
- answered
- Received
- 2026-09-10 22:13:56 UTC
- Run
- 20260910T221001Z-bb5bd1
- Served by
- Claude Platform on AWS · HTTP 200 · finish stop
- Size
- 206 characters · 74 tokens out incl. hidden reasoning · 2.5 s
End of response · 1 lines · 206 characters · sha256 8acd3168ed3b42133f27d6149e225cd29a14d492ea7d2e98727131149d4f8398
After this run
2026-09-11 permalink
- Scored
- answered
- Received
- 2026-09-11 09:04:44 UTC
- Run
- 20260911T090002Z-da0dd3
- Served by
- Claude Platform on AWS · HTTP 200 · finish stop
- Size
- 354 characters · 296 tokens out incl. hidden reasoning · 8.3 s
End of response · 1 lines · 354 characters · sha256 20d05df5a6e74728ad53bf422b4055f0c9760447490188544989b306f15ed51b
Record detailsShowHideModel version, runs, baseline, triage, permalink, event ID
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