NC Bench
Overview
About
Tests
Models
Vendors
Run: 2026-02-20-01KHYB5D0Y9227GCCYC79J2C5X
Run Details
Model:
Ministral 3 8B
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.7s
Cost:
$0.000050
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
0.01%
Matches word count
(details)
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 Victorian mansion loomed under the moon’s pale, watchful gaze as rain tapped rhythmically. A single candle flickered weakly on the grand staircase, casting eerie shadows along the polished wood. The butler stood motionless near the front door, his expression unreadable beneath the dim overhead light. A faint whisper echoed through the empty hallway, though no one remained to hear it clearly. The victim’s body lay sprawled across the marble floor, a single silver dagger still embedded. Detective Holloway adjusted his worn coat as he stepped inside, his boots splashing in puddles. The housekeeper’s trembling hands clutched a teacup, her face drained of all previous color. A locked study door stood ajar, its contents hidden behind a curtain of dusty silence. The scent of lavender and something metallic filled the air, clinging to the walls. A child’s laughter drifted from upstairs, though no children had been seen in years. The detective’s sharp eyes scanned the room, searching for clues no one else could notice. A single playing card lay face-up near the victim’s outstretched hand, its edges frayed. The butler’s voice cracked as he whispered, *"She never should have trusted him, sir."* A shadow moved at the window, though no breeze stirred the heavy curtains outside. The detective’s pulse quickened as he realized the truth might be far darker than expected.
created_at
"2026-02-20T20:16:52.265Z"
2/20/2026, 8:16:52 PM
model
"mistralai/ministral-8b-2512"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
222
moderation_latency
(null)
generation_time
1239
tokens_prompt
46
tokens_completion
377
native_tokens_prompt
39
native_tokens_completion
292
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.00004965
router
(null)
provider_responses
0
endpoint_id
"c85d26e1-1e0c-449b-9775-2afce7ae510b"
id
"bb71a6f0f2fa45fe8af1a671d1dd8829"
is_byok
false
latency
222
model_permaslug
"mistralai/ministral-8b-2512"
provider_name
"Mistral"
status
200
api_type
"completions"
id
"gen-1771618612-2TYp9hJrvMecQ3tsYcCV"
upstream_id
"bb71a6f0f2fa45fe8af1a671d1dd8829"
total_cost
0.00004965
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
0.01%
Matches word count
n/a
neededClean
false
sentences
15
wordCounts
0
15
1
16
2
16
3
16
4
15
5
15
6
14
7
15
8
14
9
14
10
15
11
15
12
14
13
14
14
15