Run: 2026-02-20-01KHYB2F0GXBTFHSQK56F4V22S

Run Details

Duration:
3.9s
Cost:
$0.000103
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
50.87% 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 drummed against the windowpanes as Inspector Harlow lit his pipe, its ember glowing faintly in the dim lamplight. A single envelope lay on the desk, sealed with black wax bearing the crest of the late Lord Edgemont’s estate. The air smelled of damp wool and old books, the scent of a house long abandoned by its former inhabitants. Footsteps echoed in the empty hallway, though no one else had entered the study since the butler’s departure yesterday evening. Harlow traced the wax with a gloved finger, feeling the cold press of something sharp beneath its surface. Outside, the wind howled like a mournful chorus, as if the very elements conspired to keep secrets from prying eyes. The clock on the mantel ticked loudly, each second stretching into an eternity of unanswered questions about the night’s tragic events. A shadow flickered past the doorframe, too quick to be the wind, too deliberate to be mere imagination. The inspector exhaled smoke, watching it curl toward the ceiling where dust motes danced like silent witnesses to a crime unsolved. Lord Edgemont’s portrait stared down, his painted eyes seeming to follow Harlow’s every move with unsettling intensity. A floorboard creaked somewhere deep within the house, though no one had stepped upon it in hours. Harlow’s hand tightened around his pipe, the weight of the case pressing heavier than the lead in his pockets. The envelope’s edges were frayed, as if torn in haste by fingers trembling with either fear or fury. A single word was scrawled in ink across the back: *"Midnight."* The handwriting was elegant, yet trembling slightly. The inspector’s pulse quickened, realizing this wasn’t just a message—it was a confession, or perhaps a warning. The study’s fire had long since burned low, casting long, accusatory shadows that stretched toward the unopened envelope. Harlow reached for his magnifying glass, the cold metal biting into his palm as he prepared to uncover the truth. Somewhere in the house, a clock struck twelve, its chime ringing out like a death knell through the silent halls. The inspector knew then that the night’s mystery would not be solved by logic alone, but by the ghosts lingering in every corner.
created_at"2026-02-20T20:15:15.992Z" 2/20/2026, 8:15:15 PM
model"mistralai/ministral-14b-2512"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency200
moderation_latency(null)
generation_time3772
tokens_prompt46
tokens_completion592
native_tokens_prompt39
native_tokens_completion476
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"
usage0.000103
router(null)
provider_responses
0
endpoint_id"0b53717b-9af5-4de3-80af-ebedd2adf981"
id"864be6f74564432da669bd57dc5dc16a"
is_byokfalse
latency195
model_permaslug"mistralai/ministral-14b-2512"
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771618516-bB0QUvCnNToYUKIn2NJ6"
upstream_id"864be6f74564432da669bd57dc5dc16a"
total_cost0.000103
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
50.87% Matches word count n/a
neededCleanfalse
sentences19
wordCounts
020
120
220
320
418
520
621
718
821
917
1017
1119
1218
1318
1418
1518
1620
1720
1823