Run: 2026-04-24-01KQ0MZMFRGTB17RF2592HB377

Run Details

Model:: GPT-5.5
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 4.3s
Cost:: $0.003295
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
93.52%	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 threads across the windows of Blackthorn Manor.
Inspector Vale arrived just as midnight strangled the last bell.
Inside, the guests stood frozen around Lord Pembroke's body.
His champagne flute lay shattered beneath the library's green lamp.
No one spoke, except the clock coughing behind velvet curtains.
Vale noticed crimson fingerprints on the ivory chess queen nearby.
Lady Mara's smile trembled, too carefully, beneath her black veil.
Thunder rolled, and someone upstairs began laughing, then stopped.

Evaluation details

Result

Evaluator

Details

Meta Data

93.52%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	10
1	10
2	9
3	10
4	10
5	10
6	10
7	9