NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Mini
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSS9N57N6N49BJ27TBNKYY
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
The evening fog settled thickly over the silent town as Detective Harris arrived, his coat pulled tight against the chill. Inside the grand mansion, gas lamps flickered weakly along the walls, casting eerie shadows that danced with unspoken secrets. A body lay sprawled across the ornate carpet, crimson staining the intricate patterns in a way that was horribly unnatural. Whispers of betrayal echoed through the heavy air, mingling with the faint scent of perfume and the sharp bite of fear. Detective Harris knelt beside the victim, noting the peculiar absence of a weapon, while guests shivered nervously in tight clusters. The clock above the mantel chimed midnight, its hollow tone reverberating ominously as footsteps approached the room with urgent purpose.
id
"gen-1744656181-tFnb7Uuu40roIiqnA8y1"
upstream_id
"chatcmpl-BMJ3ltd4goP6QkER0DMU4gDROK3C0"
total_cost
0.0002648
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:43:03.415318+00:00"
Monday, April 14th, 2025 at 6:43:03 PM GMT+00:00
model
"openai/gpt-4.1-mini-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
535
moderation_latency
217
generation_time
682
tokens_prompt
42
tokens_completion
154
native_tokens_prompt
42
native_tokens_completion
155
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
0.0002648
Evaluation details
Result
Evaluator
Details
Meta Data
86.8844%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
20
1
19
2
20
3
21
4
20
5
20