Run: 2026-02-20-01KHY8YPRCN5ME61GGCY8073ED

Run Details

Duration:
2.1s
Cost:
$0.000061
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

AI
The old Victorian mansion loomed under a moonless sky, its peeling paint whispering secrets. A single candle flickered in the grand foyer, casting long shadows where no one dared tread. The butler adjusted his cufflinks nervously, his knuckles whitening around the polished silver tray. A bloodstained handkerchief lay crumpled near the marble steps, its edges frayed from desperate clutches. The victim’s last breath had frozen mid-sentence, their lips still parted in silent accusation. Outside, rain began to tap against the windows, mimicking the rhythm of a dying heartbeat. The front door creaked open, revealing a stranger’s silhouette, their breath curling in the frigid air. A violin’s mournful melody drifted from the drawing room, though no musician remained in sight. The housekeeper’s apron still bore fresh stains, though she insisted she’d never touched the wine. A locked music box sat on the piano, its brass key missing from the intricate design. The detective arrived too late, his boots sinking into the damp, blood-soaked carpet fibers. A child’s drawing, half-finished, depicted a shadowy figure with a knife in its hand. The butler’s watch had stopped at exactly eleven-forty-seven, the exact time of the murder. A single rose, blackened at the edges, lay crushed beneath the victim’s empty chair. The detective’s gloved fingers traced the rose’s petals, feeling the faintest trace of poison. A servant’s whispered confession echoed through the halls, though no one had heard its words. The mansion’s grand clock chimed midnight, its bells tolling like a funeral knell. The detective’s gaze locked onto the butler, whose face paled beneath the flickering candlelight.
created_at"2026-02-20T19:38:15.71Z" 2/20/2026, 7:38:15 PM
model"mistralai/ministral-8b-2512"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency232
moderation_latency(null)
generation_time1885
tokens_prompt46
tokens_completion462
native_tokens_prompt39
native_tokens_completion367
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"
usage0.0000609
router(null)
provider_responses
0
endpoint_id"c85d26e1-1e0c-449b-9775-2afce7ae510b"
id"1ddb418b28714f41abc653711f4f16dc"
is_byokfalse
latency232
model_permaslug"mistralai/ministral-8b-2512"
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771616295-kwgYsAAICDUz79ENLSrZ"
upstream_id"1ddb418b28714f41abc653711f4f16dc"
total_cost0.0000609
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.01% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
014
116
214
315
415
515
616
715
815
916
1015
1115
1216
1314
1414
1515
1613
1714