Run: 2026-02-20-01KHY9MQ89X9B3H3FZB6Z5KY70

Run Details

Duration:
3.2s
Cost:
$0.000093
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
31.74% 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 rain lashed against the windows of the old Victorian mansion, its iron bars groaning under the storm’s relentless fury. Detective Eleanor Vane adjusted her coat, the scent of damp earth and something metallic lingering in the air. A single candle flickered weakly on the grand foyer table, casting long shadows that seemed to whisper secrets. The butler’s stiff posture suggested he had delivered grim news, his knuckles white around the silver tray he held. "The master’s body was found in the library," he murmured, voice trembling like the candle’s trembling flame. Bloodstains marred the Persian rug where the victim lay sprawled, his eyes frozen in an expression of sheer terror. A shattered decanter lay nearby, its contents spilled like the man’s final, desperate breath upon the floor. The detective’s sharp gaze swept the room, noting the faint scent of lavender mixed with something far more sinister. Outside, thunder rumbled ominously, as if the sky itself mourned the man who had met his untimely end. A pocket watch stopped at three minutes past midnight lay beside the body, its hands frozen in time’s cruel embrace. The butler’s lips parted again, but no words came out, only a choked sob escaping his rigid composure. "Who discovered him?" Eleanor asked, her voice steady despite the chill creeping up her spine like a thief. "It was Miss Harlow," he whispered, his face pale as the ghostly specter of the deceased. The detective’s fingers twitched toward her revolver, the weight of the mystery pressing down heavier than the storm. A locked door stood between her and the truth, its key hidden somewhere in the mansion’s labyrinthine halls. The victim’s study was a shrine to greed, gold coins and ledgers scattered haphazardly across the desk like confessions. A single sheet of paper bore only three words: *"The debt must be paid in blood."* Eleanor’s breath hitched as she realized this wasn’t just a murder—it was a message meant for her eyes alone.
created_at"2026-02-20T19:50:17.111Z" 2/20/2026, 7:50:17 PM
model"mistralai/ministral-14b-2512"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency301
moderation_latency(null)
generation_time2870
tokens_prompt46
tokens_completion505
native_tokens_prompt39
native_tokens_completion425
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"
usage0.0000928
router(null)
provider_responses
0
endpoint_id"0b53717b-9af5-4de3-80af-ebedd2adf981"
id"c51a6c29db1341329ef54326e54cdfb4"
is_byokfalse
latency301
model_permaslug"mistralai/ministral-14b-2512"
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771617017-Hh42PTztjxQWVr0JGrDa"
upstream_id"c51a6c29db1341329ef54326e54cdfb4"
total_cost0.0000928
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
31.74% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
020
118
218
319
417
519
617
719
818
920
1018
1118
1216
1318
1418
1519
1636