Model

Claude 3.7 Sonnet

Test

N-Length Sentences

Scenario

Write sentences with 10 words each

Run ID

2025-02-24-01JMX0VBVKBTMAQSS7VQDPH8VD

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

AI
The night was cold, with fog rolling in from the bay. Detective Morgan arrived at the scene, notebook clutched in hand. Yellow police tape fluttered across the entrance to the mansion. Inside, officers whispered as they circled around something unseen. A crystal chandelier cast eerie shadows throughout the grand foyer. The victim lay sprawled at the bottom of marble stairs. Her evening gown shimmered crimson, both from design and blood. A single high-heeled shoe had fallen several steps above her. Morgan knelt beside the body, studying the woman's pale face. "Time of death was approximately three hours ago," said forensics. The detective noticed a crumpled note clutched in her hand. Five distinct fingerprints marked the banister near the upper landing. "The guests are waiting in the study," an officer reported. Each one had reason to want Victoria Blackwood permanently silenced.
id"gen-1740435730-eCdYB1V3UpGL3FUmj2MZ" 
upstream_id"msg_0184i3bVQWEseZMmMK288AY2" 
total_cost0.003282
cache_discount(null)
provider_name"Anthropic" 
created_at"2025-02-24T22:22:15.280595+00:00" Monday, February 24th, 2025 at 10:22:15 PM GMT+00:00
model"anthropic/claude-3-7-sonnet-20250219:beta" 
app_id182717
streamedtrue
cancelledfalse
latency394
moderation_latency(null)
generation_time3710
tokens_prompt42
tokens_completion182
native_tokens_prompt44
native_tokens_completion210
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" 
usage0.003282

Evaluation details

Result Evaluator Details Meta Data
94.4461% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
011
110
210
39
410
510
610
711
810
910
1010
1110
1210
1310