Run: 2026-04-24-01KQ0NHF1PQSDZKCD89WQ7G56N

Run Details

Model:: GPT-5.5
Test:: N-Length Sentences
Scenario:: Write sentences with 20 words each
Duration:: 4.2s
Cost:: $0.004075
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
59.10%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 20 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain hammered the glass conservatory while Detective Mara Vale studied the corpse beneath the orchids, counting every breath in the room.
Lord Ashbury’s pocket watch ticked loudly, though its hands had stopped at midnight, precisely when the household swore he screamed.
No one admitted touching the silver letter opener, yet blood jeweled its handle like rubies arranged for a coronation.
Mara noticed mud on the vicar’s cuffs, perfume on the butler’s gloves, and terror in Lady Ashbury’s painted smile.
Then the lights failed, and in darkness someone whispered her name from beside the dead man’s empty chair.

Evaluation details

Result

Evaluator

Details

Meta Data

59.10%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	21
1	20
2	19
3	19
4	18