Run: 2026-04-24-01KQ0P5KJMF1DFKYB1Y7VMCGTQ

Run Details

Model:: GPT-5.5 (Reasoning, Low)
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 11.4s
Cost:: $0.016465
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
100.00%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 10 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain stitched silver lines across Blackthorn Manor's windows after midnight.
The grandfather clock stopped when the first scream shattered dinner.
Detective Mara Vale arrived before the candles finished guttering out.
Lord Ashcombe lay facedown, one hand clutching a white rose.
Blood darkened the parquet beneath his immaculate black evening jacket.
Every guest denied noticing the knife beside the crystal decanter.
Yet someone had wiped its handle with Lady Celia's scarf.
Mara noticed muddy footprints ending neatly at the locked study.

Evaluation details

Result

Evaluator

Details

Meta Data

100.00%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	10
3	10
4	10
5	10
6	10
7	10