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Run: 2026-02-20-01KHXPRR4HS5TKQ2ZHGQFXMDT0
Run Details
Model:
Mistral Medium 3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.5s
Cost:
$0.000530
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
63.81%
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 grand estate loomed under storm clouds, its windows flickering with candlelight as guests arrived for dinner that evening. Detective Mercer adjusted his gloves, watching the butler’s stiff posture betray something unseen beneath his polished professional demeanor. A scream shattered the silence just as the clock struck nine, echoing through halls lined with portraits of long-dead ancestors. Lady Whitmore’s diamond brooch lay shattered on the marble floor, its gems scattered like stars around her motionless, elegantly dressed body. The air smelled of lavender and gunpowder, a contradiction that hung heavy as whispers spread among the assembled suspects. Each guest claimed innocence, yet their eyes darted toward the library door, left slightly ajar as if inviting scrutiny. Mercer knelt beside the body, noticing a single playing card—the ace of spades—tucked into her lifeless, manicured fingers. Outside, thunder rumbled as the detective stood, his gaze sweeping over the room where secrets simmered behind forced smiles. The butler cleared his throat, his voice trembling while announcing the telephone lines had been cut by an unknown hand. Mercer’s pulse steadied; he knew the killer remained among them, waiting for the next carefully calculated move to unfold.
created_at
"2026-02-20T14:20:26.144Z"
2/20/2026, 2:20:26 PM
model
"mistralai/mistral-medium-3.1"
3/1/2001, 12:00:00 AM
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
237
moderation_latency
(null)
generation_time
5401
tokens_prompt
46
tokens_completion
340
native_tokens_prompt
39
native_tokens_completion
257
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
16
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
0.0005296
router
(null)
provider_responses
0
endpoint_id
"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id
"0fdd2631cf7543c08a115e718701897f"
is_byok
false
latency
237
model_permaslug
"mistralai/mistral-medium-3.1"
3/1/2001, 12:00:00 AM
provider_name
"Mistral"
status
200
api_type
"completions"
id
"gen-1771597226-fBN06TO4WBhjq5PRJGea"
upstream_id
"0fdd2631cf7543c08a115e718701897f"
total_cost
0.0005296
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
63.81%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
19
1
18
2
21
3
21
4
19
5
19
6
20
7
19
8
20
9
19