Run: 2026-09-29-01M3P2FFA3D3VG9431KXAPTX5X

Run Details

Model:: Claude Sonnet 5.5 (Reasoning)
Test:: N-Length Sentences
Scenario:: Write sentences with 5 words each
Duration:: 12.6s
Cost:: $0.014254
Provider:: Claude Platform on AWS

Evaluation summary

Score	Evaluator	Details Link
70.59%	Matches word count	(details)

Model input

User/Human

Please write the opening scene of a murder mystery where each sentence has exactly 5 words.
Please make sure that each sentence has the same length. Only return the opening itself.

Model response

Rain hammered the manor windows. Detective Voss shook her umbrella. The butler blocked the doorway. "Take me to the body." His hands were visibly shaking. "Upstairs, in the library, madam." Mara climbed the creaking staircase. Dead Ashcrofts watched from portraits. The library door stood open. Lord Ashcroft lay across papers. A silver dagger pierced him. The clock stopped at midnight. Mara studied his stained fingers. Ink covered them, not blood. Someone had rearranged the scene. "Who else was home tonight?" The butler swallowed very hard. "Only the family, Detective Voss." Mara smiled without any warmth. "Then everyone here is lying." Thunder shook the whole house. Downstairs, a woman screamed suddenly.

Evaluation details

Result

Evaluator

Details

Meta Data

70.59%

Matches word count

n/a

neededClean

false

sentences

wordCounts

0	5
1	5
2	5
3	10
4	10
5	5
6	5
7	5
8	5
9	5
10	5
11	5
12	5
13	10
14	10
15	10
16	5