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Run: 2026-02-20-01KHXPHD8PB1CXA4P12JCPSRF5
Run Details
Model:
Mistral Medium 3.1
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
5.3s
Cost:
$0.000604
Provider:
Mistral
Evaluation summary
Score
Evaluator
Details Link
53.14%
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 gilded gates creaking ominously as thunder rolled across the desolate moors. Detective Harlan adjusted his damp coat, eyes narrowing at the flickering candlelight spilling from shattered second-floor windows. A butler with hollow cheeks stood rigid, his gloved hands trembling while whispering something about the master’s locked study. Bloodstains marred the Persian rug, leading to an overturned chair where a silver letter opener glinted beneath the chandelier’s dim glow. The victim’s wife clutched a lace handkerchief, her red-rimmed eyes darting toward the servants’ quarters as police boots echoed down the hall. A clock struck midnight, its brass pendulum swinging wildly, as if counting the seconds since the body had been discovered in disarray. Harlan knelt beside the corpse, noticing the peculiar scent of bitter almonds clinging to the stiffened fingers and crumpled cufflinks. The coroner’s assistant muttered about cyanide, but the detective’s gaze locked onto a half-burned photograph tucked beneath the desk’s edge. Outside, the wind howled through skeletal trees, carrying the faintest sound of a woman’s sobs from the overgrown garden maze. Somewhere in this house, a killer waited, watching, as the detective’s fingers brushed against a monogrammed pocket watch stopped at nine.
created_at
"2026-02-20T14:16:25.634Z"
2/20/2026, 2:16:25 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
224
moderation_latency
(null)
generation_time
5001
tokens_prompt
46
tokens_completion
360
native_tokens_prompt
39
native_tokens_completion
294
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
0.0006036
router
(null)
provider_responses
0
endpoint_id
"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id
"719430a60ef0420a95f3835d98fd3904"
is_byok
false
latency
224
model_permaslug
"mistralai/mistral-medium-3.1"
3/1/2001, 12:00:00 AM
provider_name
"Mistral"
status
200
api_type
"completions"
id
"gen-1771596985-xnVH7YkZIfp5re5UppWs"
upstream_id
"719430a60ef0420a95f3835d98fd3904"
total_cost
0.0006036
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Mistral"
Evaluation details
Result
Evaluator
Details
Meta Data
53.14%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
19
1
18
2
19
3
21
4
23
5
22
6
20
7
21
8
20
9
21