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Run: 2026-03-18-01KM09DG0TWF44AV10NR3QWCNE
Run Details
Model:
Mistral Small 4
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2.3s
Cost:
$0.000139
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
18.89%
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 clock struck midnight exactly as I stepped into the dimly lit study, its oak panels whispering secrets of darker nights past. A faint scent of cigar smoke lingered, mingling with the metallic tang of blood near the desk’s edge. My gloved fingers brushed the cold glass of whiskey, untouched since last night’s gathering. Moonlight sliced through the curtains, illuminating the crimson pool expanding beneath the slumped figure’s head. The victim’s face was frozen in silent accusation, eyes wide with the horror of their final breath. A single playing card lay splayed across the floor, the ace of spades smirking up at me like a taunting signature. My pulse quickened as I noticed the strand of pearls snapped beside it, a gift perhaps—or a deliberate snare. The grandfather clock’s pendulum swayed lazily, oblivious to the tragedy unfolding beneath it. Shadows stretched like grasping hands across the Persian rug, hiding more than they revealed. My breath fogged in the chilled air, carrying whispers of a killer untouched by dawn’s light.
created_at
"2026-03-18T10:56:12.843Z"
3/18/2026, 10:56:12 AM
model
"mistralai/mistral-small-2603"
1/1/2603, 12:00:00 AM
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
410
moderation_latency
(null)
generation_time
2256
tokens_prompt
46
tokens_completion
267
native_tokens_prompt
51
native_tokens_completion
219
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
0.00013905
router
(null)
provider_responses
0
endpoint_id
"f5ed6283-4e17-457d-98cd-2ec0c318171d"
id
"2b2157892070458e817af11c376b3961"
is_byok
false
latency
410
model_permaslug
"mistralai/mistral-small-2603"
1/1/2603, 12:00:00 AM
provider_name
"Mistral"
status
200
user_agent
"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer
(null)
api_type
"completions"
id
"gen-1773831372-bh8bItbx7Y8Imskg43l5"
upstream_id
"2b2157892070458e817af11c376b3961"
total_cost
0.00013905
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
18.89%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
22
1
18
2
14
3
15
4
17
5
21
6
20
7
13
8
14
9
16