Model

Claude 3.7 Sonnet

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2025-02-24-01JMX2EJZQ6TEH2TT8DJCDSZNZ

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

AI
The old mansion stood silent in the rain, its windows like dead eyes staring out over the expansive grounds. Detective Sarah Morgan pulled her coat tighter against the chill as she approached the imposing stone structure deliberately. Inside, the body of Charles Blackwood lay sprawled across his expensive Persian rug, a single bullet hole between his eyes. Blood had pooled beneath his head, soaking into the intricate patterns and forever staining the legacy of his wealth. Sarah knelt beside the corpse, her trained eyes scanning for details others might miss among the disturbed surroundings. The victim's hand still clutched a torn photograph, his fingers rigid in death's uncompromising grip around the mysterious clue. Across the room, a grandfather clock ticked loudly, marking time in a house where someone's had abruptly, violently ended.
id"gen-1740437409-Bp39vSIltKAAgenP9w6n" 
upstream_id"msg_01MZhs4yAMJzohj5EJ7V1yrH" 
total_cost0.003012
cache_discount(null)
provider_name"Anthropic" 
created_at"2025-02-24T22:50:13.511482+00:00" Monday, February 24th, 2025 at 10:50:13 PM GMT+00:00
model"anthropic/claude-3-7-sonnet-20250219:beta" 
app_id182717
streamedtrue
cancelledfalse
latency387
moderation_latency(null)
generation_time3436
tokens_prompt42
tokens_completion160
native_tokens_prompt44
native_tokens_completion192
native_tokens_reasoning0
num_media_prompt(null)
num_media_completion(null)
num_search_results(null)
origin"https://ncbench.com/" 
is_byokfalse
finish_reason"stop" 
native_finish_reason"stop" 
usage0.003012

Evaluation details

Result Evaluator Details Meta Data
52.8113% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
019
118
220
319
418
519
619