Run: 2026-03-12-01KKHYXPJ3JA204ZB0VGBRD1G7

Run Details

Model:: Grok 4.20 (Beta, Reasoning)
Test:: Data extraction
Scenario:: What instrument does Lucy play?
Duration:: 4.3s
Cost:: $0.004838
Provider:: xAI

Evaluation summary

Score	Evaluator	Details Link
Fail	Matches text	(details)
Pass	Matches Regex	(details)
no eval	Overall

Model input

User/Human

What instrument does Lucy play based on the following text? Only return the instrument, nothing else.

In the school band, there are four instruments: drums, bass, flute, trumped.
John plays the drums, Mary plays the flute, and Pete plays the trumpet. Lucy doesn't play a wind instrument.

Model response

bass

The text lists four instruments (drums, bass, flute, trumpet) and three assigned players, leaving bass for Lucy. Drums and bass are not wind instruments, which aligns with the explicit statement that Lucy does not play a wind instrument (eliminating flute and trumpet).

Evaluation details

Result	Evaluator	Details	Meta Data
Fail	Matches text	Case insensitive: bass	n/a
Pass	Matches Regex	/\bbass\b/i	n/a
no eval