NC Bench
Overview
About
Tests
Models
Model
GPT-4.1
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSTPGWAZY18ZJJM7N68MPD
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
Messages
Meta
AI
A shrill scream sliced the frigid morning air, echoing down the marble corridors of Hemsworth Manor, shattering uneasy silence. Detective Clara Fields arrived swiftly, her breath clouding as she stepped through the grand entrance, eyes narrowed, senses trained for detail. A crystal chandelier flickered overhead, dim light casting long shadows over the lifeless figure sprawled across the ornate Persian rug. Blood pooled beneath the victim’s delicate hand, a crimson stain creeping outward, soaking into intricate patterns of blue and gold. Family members gathered nervously at the threshold, their anxious whispers bouncing off gilded walls, searching for explanations amid growing dread. A broken teacup glinted underfoot, shards scattered across polished hardwood like clues waiting to be pieced together by keen observation. As thunder rolled outside, Clara knelt beside the body, her gloved fingers hovering over a single, handwritten note clutched tightly. The grandfather clock chimed eight, its somber tone marking time’s relentless march and beginning of a night no one would forget.
id
"gen-1744656227-LbYs1G8InqWweP5piGkT"
upstream_id
"chatcmpl-BMJ4VYXvukvkXQFZ67AVm8TdIpfy0"
total_cost
0.00182
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:43:50.525061+00:00"
Monday, April 14th, 2025 at 6:43:50 PM GMT+00:00
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
485
moderation_latency
277
generation_time
1904
tokens_prompt
42
tokens_completion
216
native_tokens_prompt
42
native_tokens_completion
217
native_tokens_reasoning
0
num_media_prompt
(null)
num_media_completion
(null)
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00182
Evaluation details
Result
Evaluator
Details
Meta Data
85.2449%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
19
1
21
2
20
3
20
4
20
5
20
6
20
7
21