NC Bench
Overview
About
Tests
Models
Model
GPT-4.1 Mini
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2025-04-14-01JRTSZ3JS2GC8434CBCZ204RJ
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 old mansion loomed silently beneath a sky heavy with clouds, shadows creeping along its timeworn, ivy-clad walls. Detective Harper stepped cautiously inside, her flashlight piercing the darkness, revealing dust particles dancing in the stale, cold air. A sudden creak echoed softly, alerting her senses to unseen movements lurking somewhere deep within the mansion’s endless, twisting corridors. On the grand, polished floor lay a shattered vase, surrounded by crimson stains pooling near the lifeless body of Mr. Blackwood. Her breath caught briefly as she examined the scene, noting the peculiar arrangement of objects and the absence of obvious weapons. Footsteps approached from upstairs, hurried and uneven, while the distant clock chimed midnight, marking the ominous beginning of a deadly investigation.
id
"gen-1744656371-JrnHqU6c88JIc1Sl8Mid"
upstream_id
"chatcmpl-BMJ6q6HJa77k1n99a2Z6aUetyVU8n"
total_cost
0.0002728
cache_discount
(null)
provider_name
"OpenAI"
created_at
"2025-04-14T18:46:13.969662+00:00"
Monday, April 14th, 2025 at 6:46:13 PM GMT+00:00
model
"openai/gpt-4.1-mini-2025-04-14"
app_id
182717
streamed
true
cancelled
false
latency
438
moderation_latency
262
generation_time
743
tokens_prompt
42
tokens_completion
159
native_tokens_prompt
42
native_tokens_completion
160
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
0.0002728
Evaluation details
Result
Evaluator
Details
Meta Data
67.2109%
Matches word count
n/a
neededClean
false
sentences
6
wordCounts
0
19
1
19
2
20
3
21
4
21
5
21