Run: 2026-02-20-01KHY7WY9T78JGS5ERFK4CKWBE

Run Details

Duration:
3.3s
Cost:
$0.000088
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
35.14% 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 rain hammered against the windowpanes as Inspector Harlow sipped his cold, bitter coffee at dawn’s first light. A single yellow envelope lay on the threshold, its wax seal unbroken by time or weather’s cruel bite. The victim’s name was scrawled in jagged letters, ink still damp as if written moments before his death. Bloodstains marred the parlor’s Persian rug, dark splotches that seemed to whisper secrets to anyone daring to look. Outside, the village clock struck midnight, though no one had heard it chime through the suffocating silence that clung to the air. Detective Marlow’s gloved fingers trembled slightly as he lifted the envelope, its weight heavier than any letter should be. The butler stood motionless in the doorway, his face a mask of stone, eyes fixed on something beyond the room’s grim confines. A child’s laughter echoed faintly from the upstairs hall, a sound so out of place it made the inspector’s stomach twist with dread. The local constable muttered under his breath, his breath fogging the air as he adjusted his hat with nervous, jerky motions. A half-empty brandy glass sat on the sideboard, its contents long since evaporated into the oppressive, scentless atmosphere. The victim’s pocket watch lay open on the floor, its hands frozen at three minutes past the hour of his demise. Inspector Harlow’s mind raced as he pieced together the fragments of this macabre tableau, each clue a thread in a tapestry of deceit. The fire in the hearth had burned low, embers glowing like malevolent eyes in the gathering shadows of the room. A single glove, pristine and untouched, rested on the mantel, its presence as puzzling as the absence of its mate. The detective’s pulse quickened as he realized this was no ordinary crime—this was a puzzle woven with threads of madness and malice.
created_at"2026-02-20T19:19:49.319Z" 2/20/2026, 7:19:49 PM
model"mistralai/ministral-14b-2512"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency190
moderation_latency(null)
generation_time3065
tokens_prompt46
tokens_completion463
native_tokens_prompt39
native_tokens_completion401
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"
usage0.000088
router(null)
provider_responses
0
endpoint_id"0b53717b-9af5-4de3-80af-ebedd2adf981"
id"885d597b03ba475cacc2e4e35e73538a"
is_byokfalse
latency190
model_permaslug"mistralai/ministral-14b-2512"
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771615189-Cf0RZwqI1Fg6uW5HmNl9"
upstream_id"885d597b03ba475cacc2e4e35e73538a"
total_cost0.000088
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
35.14% Matches word count n/a
neededCleanfalse
sentences15
wordCounts
018
118
218
318
422
519
622
723
821
919
1021
1123
1220
1320
1423