Run: 2026-02-20-01KHXPHD8PB1CXA4P12JCPSRF5

Run Details

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

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_id182717
external_user(null)
streamedtrue
cancelledfalse
latency224
moderation_latency(null)
generation_time5001
tokens_prompt46
tokens_completion360
native_tokens_prompt39
native_tokens_completion294
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
usage0.0006036
router(null)
provider_responses
0
endpoint_id"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id"719430a60ef0420a95f3835d98fd3904"
is_byokfalse
latency224
model_permaslug"mistralai/mistral-medium-3.1" 3/1/2001, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771596985-xnVH7YkZIfp5re5UppWs"
upstream_id"719430a60ef0420a95f3835d98fd3904"
total_cost0.0006036
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
53.14% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
019
118
219
321
423
522
620
721
820
921