Run: 2026-02-20-01KHXPR4RGJD5X5JW2AT05DW3P

Run Details

Duration:
7.1s
Cost:
$0.000544
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
63.81% 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 windows flickering with candlelight as guests arrived for dinner that evening. Detective Mercer adjusted his gloves, watching the butler’s stiff posture betray something unseen beneath his polished professional demeanor. A scream shattered the silence just as the clock struck nine, echoing through halls lined with portraits of long-dead ancestors. Lady Whitmore clutched her pearls, her pale face twisting into horror as the chandelier swayed violently above the dining table. Blood pooled around the body sprawled near the fireplace, its edges creeping toward the hearth like fingers reaching for forgotten secrets. The victim’s pocket watch lay shattered on the marble, its hands frozen at the exact moment the murderer struck without warning. Whispers spread like wildfire among the guests, each glance heavy with suspicion as Mercer scanned the room for telltale signs. A single glove, monogrammed with the letter *V*, was tucked beneath the sofa, its leather still warm to the detective’s touch. The air smelled of lavender and gunpowder, a contradiction that lingered as the wind howled through cracks in the ancient mansion. Mercer’s pulse quickened—this was no ordinary crime, but a meticulously planned act of vengeance decades in the making.
created_at"2026-02-20T14:20:06.298Z" 2/20/2026, 2:20:06 PM
model"mistralai/mistral-medium-3.1" 3/1/2001, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency248
moderation_latency(null)
generation_time6978
tokens_prompt46
tokens_completion345
native_tokens_prompt39
native_tokens_completion264
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"
usage0.0005436
router(null)
provider_responses
0
endpoint_id"13c5002b-8c5b-490c-8a5f-52ec0242804f"
id"c2fe66b3286341f78ddd3e7f4eee1a3e"
is_byokfalse
latency244
model_permaslug"mistralai/mistral-medium-3.1" 3/1/2001, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771597206-mXEEfdZRTmsVsvrYV4yU"
upstream_id"c2fe66b3286341f78ddd3e7f4eee1a3e"
total_cost0.0005436
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
63.81% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
019
118
221
320
421
521
620
721
821
919