Run: 2026-07-01-01KWE9CRF2TMP7R94MW806CJ0V

Run Details

Model:: Claude Sonnet 5 (Reasoning, Low)
Test:: N-Length Sentences
Scenario:: Write sentences with 10 words each
Duration:: 16.5s
Cost:: $0.018430
Provider:: Amazon Bedrock

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 hammered hard against the old manor's darkened windows tonight. Detective Mara Voss stepped carefully through the creaking front door. A single lamp flickered weakly within the grand entrance hallway. Lord Ashford lay motionless upon the cold marble floor tonight. Blood pooled beneath him, spreading dark against the pale stone. No weapon lay anywhere near his outstretched, cold, lifeless hand. Mara knelt down, examining the wound just below his ribs. The butler hovered nearby, wringing his trembling, pale hands nervously. Someone inside this house had clearly wanted Lord Ashford dead. Mara rose slowly, already suspecting everyone hiding within these walls.

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
8	10
9	10