Run: 2026-06-01-01KT1J440MTWNY1EJ44CWZ2VQY

Run Details

Model:: Claude Opus 4.8 (Reasoning, Low)
Test:: Data extraction
Scenario:: What's the correct time?
Duration:: 11.9s
Cost:: $0.021285
Provider:: Anthropic

Evaluation summary

Score	Evaluator	Details Link
Fail	Matches Regex	(details)

Model input

User/Human

What is the correct time based on the following text? Only return the time in HH:MM format, nothing else.

The clock shows 3:45. It's 15 minutes slow. The actual time is a quarter past an hour.

Model response

**04:00**

The clock shows 3:45 and is 15 minutes slow, so the actual time is 3:45 + 0:15 = 4:00.

(Note: the final clue "a quarter past an hour" is inconsistent with the other information, since adding 15 minutes to 3:45 gives 4:00, not a quarter-past time.)

Evaluation details

Result	Evaluator	Details	Meta Data
Fail	Matches Regex	/\b0?4:15\b/i	n/a