Run: 2026-02-20-01KHXQAKHC0SHQZB9VZYCGFQBA

Run Details

Duration:
9.7s
Cost:
$0.000650
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
0.01% 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 cobblestones, turning the gaslight’s glow into a hazy, golden smear. Detective Harlow adjusted his hat, watching the water pool around his polished, black leather shoes. A scream sliced through the night, sharp as the knife still clutched in the victim’s hand. The body sprawled across the alley, limbs twisted like a marionette cut cruelly from its strings. Blood seeped into the cracks, dark and thick, mixing with the rain in a macabre dance. Harlow knelt, ignoring the cold bite of the puddle soaking through his trousers. The victim’s eyes stared blankly upward, reflecting the flickering light like shattered glass. A single playing card, the Queen of Spades, rested just beyond the outstretched fingers. The alley reeked of cheap whiskey and something fouler, like copper and spoiled meat. Harlow’s partner, Ellis, arrived breathless, his coat flapping like a wounded crow’s wings. “Another one,” Ellis muttered, his voice tight with the weight of too many unsolved cases. The victim’s pocket watch had stopped at midnight, its hands frozen in a silent, eternal scream. A shadow shifted near the dumpster, but when Harlow turned, nothing remained but the rain. The killer had left no footprints, only the eerie sense of being watched from the dark. Harlow lit a cigarette, the flame flickering as he exhaled smoke into the damp, suffocating air. The Queen of Spades meant something—he just couldn’t remember what it signified yet. Ellis snapped photos, the flash illuminating the alley in brief, ghostly bursts of white. A whisper slithered past Harlow’s ear, but when he spun, only the wind answered back. The victim’s lips were parted, as if they’d tried to speak one final, desperate word. Harlow’s gut twisted; this wasn’t just murder—it was a message, written in blood and silence.
created_at"2026-02-20T14:30:11.253Z" 2/20/2026, 2:30:11 PM
model"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency416
moderation_latency(null)
generation_time9622
tokens_prompt46
tokens_completion501
native_tokens_prompt39
native_tokens_completion420
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"
usage0.0006495
router(null)
provider_responses
0
endpoint_id"fa718841-07ea-4b7e-b8a3-6069545c7e6a"
id"575dfccc35ad43aea109d198d054999c"
is_byokfalse
latency416
model_permaslug"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771597811-X5Sv4yk23wjMmTYoq39e"
upstream_id"575dfccc35ad43aea109d198d054999c"
total_cost0.0006495
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.01% Matches word count n/a
neededCleanfalse
sentences19
wordCounts
015
115
216
316
416
513
613
714
814
913
1031
1115
1216
1316
1414
1514
1615
1715
1816