NC Bench
Overview
About
Tests
Models
Model
GPT-4.1
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSS3F6YRZM4BS0R1N95Z12
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
Rain rattled the narrow windows as the grandfather clock in the hallway struck one, echoing ominously through the house. A silver tray of wine glasses shook in Mrs. Clay’s unsteady hands, spilling Bordeaux onto the pristine, white carpet. Colonel Ashcroft eyed the crimson stain with suspicion, his gaze darting to the closed parlor doors and their muffled voices. Lightning forked outside, illuminating the intricate wallpaper and sending everyone’s shadows slanting eerily across the polished floorboards. As the storm howled outside, a scream erupted from behind the doors, sharp and chilling, shattering the uneasy silence.
id
"gen-1744656175-vE528M3veG0ZqTAqjJWZ"
upstream_id
"chatcmpl-BMJ3fHZJ29MAAtSgk2sEOUtqzE9Op"
total_cost
0.001132
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:42:57.444835+00:00"
Monday, April 14th, 2025 at 6:42:57 PM GMT+00:00
model
"openai/gpt-4.1-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
373
moderation_latency
90
generation_time
1213
tokens_prompt
42
tokens_completion
130
native_tokens_prompt
42
native_tokens_completion
131
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
0.001132
Evaluation details
Result
Evaluator
Details
Meta Data
56.6140%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
19
1
19
2
20
3
17
4
19