Run: 2026-03-06-01KK1HA8M4RWHZH9DMVECXZV7P

Run Details

Model:: GPT-5.4 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 20 words each
Duration:: 3.6s
Cost:: $0.001677
Provider:: OpenAI

Evaluation summary

Score	Evaluator	Details Link
80.33%	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 needled the manor windows as mourners gathered, whispering beneath chandeliers that trembled like trapped stars above their black umbrellas.
At precisely midnight, the grandfather clock groaned, and Lady Vale collapsed beside the hearth, crimson blooming across her pearl gown.
No one admitted hearing the shot, yet every face blanched equally when the butler locked the doors without speaking.
Inspector Crowe arrived through thunder and mud, studying twelve guests whose careful condolences already sounded rehearsed, brittle, and dangerous.

Evaluation details

Result

Evaluator

Details

Meta Data

80.33%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	20
1	20
2	19
3	19