Run: 2026-03-18-01KM09DG0TWF44AV10NR3QWCNE

Run Details

Duration:
2.3s
Cost:
$0.000139
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
18.89% 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 clock struck midnight exactly as I stepped into the dimly lit study, its oak panels whispering secrets of darker nights past. A faint scent of cigar smoke lingered, mingling with the metallic tang of blood near the desk’s edge. My gloved fingers brushed the cold glass of whiskey, untouched since last night’s gathering. Moonlight sliced through the curtains, illuminating the crimson pool expanding beneath the slumped figure’s head. The victim’s face was frozen in silent accusation, eyes wide with the horror of their final breath. A single playing card lay splayed across the floor, the ace of spades smirking up at me like a taunting signature. My pulse quickened as I noticed the strand of pearls snapped beside it, a gift perhaps—or a deliberate snare. The grandfather clock’s pendulum swayed lazily, oblivious to the tragedy unfolding beneath it. Shadows stretched like grasping hands across the Persian rug, hiding more than they revealed. My breath fogged in the chilled air, carrying whispers of a killer untouched by dawn’s light.
created_at"2026-03-18T10:56:12.843Z" 3/18/2026, 10:56:12 AM
model"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency410
moderation_latency(null)
generation_time2256
tokens_prompt46
tokens_completion267
native_tokens_prompt51
native_tokens_completion219
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"
usage0.00013905
router(null)
provider_responses
0
endpoint_id"f5ed6283-4e17-457d-98cd-2ec0c318171d"
id"2b2157892070458e817af11c376b3961"
is_byokfalse
latency410
model_permaslug"mistralai/mistral-small-2603" 1/1/2603, 12:00:00 AM
provider_name"Mistral"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773831372-bh8bItbx7Y8Imskg43l5"
upstream_id"2b2157892070458e817af11c376b3961"
total_cost0.00013905
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
18.89% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
022
118
214
315
417
521
620
713
814
916