Run: 2026-02-20-01KHXQ37CWVJN4M36ZN3S1TKTS

Run Details

Duration:
8.5s
Cost:
$0.000615
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
0.25% 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 scuffed, leather boots with quiet disdain. A scream sliced through the night, sharp as broken glass, silencing the distant hum of the city. He turned toward the alley, where shadows clung like cobwebs to the crumbling brick walls. The body lay sprawled beneath a flickering streetlamp, limbs twisted in unnatural, grotesque angles. A single glove, black and soaked, rested near the victim’s outstretched, lifeless fingers. Harlow knelt, ignoring the cold seeping through his trousers, and studied the pale, waxen face. The victim’s lips were parted, as if frozen mid-whisper, a secret trapped forever in the silence. A crumpled note peeked from the coat pocket, its edges damp but the ink still legible. *"Meet me at midnight—alone,"* it read, the handwriting jagged, urgent, and vaguely familiar. Harlow’s pulse quickened as he recognized the looping script of an old, forgotten case. The killer had left no footprints, no clues, just the eerie stillness of the empty alley. A match flared in the darkness, illuminating a face half-hidden behind a tattered newspaper. The stranger exhaled smoke, watching Harlow with eyes that gleamed like polished, obsidian stones. "Funny how death always finds the ones who run," the voice murmured, low and dripping with amusement. Harlow stood, hand hovering near his revolver, as the match flickered out, plunging them into blackness. The rain continued its relentless drumming, washing away the last traces of the night’s grim secret. Somewhere in the distance, a clock tower chimed twelve, marking the hour of the dead.
created_at"2026-02-20T14:26:09.445Z" 2/20/2026, 2:26:09 PM
model"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency336
moderation_latency(null)
generation_time8456
tokens_prompt46
tokens_completion467
native_tokens_prompt39
native_tokens_completion397
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"
usage0.000615
router(null)
provider_responses
0
endpoint_id"fa718841-07ea-4b7e-b8a3-6069545c7e6a"
id"cab0c81a67814635acfe4f681f4b3d4f"
is_byokfalse
latency336
model_permaslug"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771597569-HcqEfH0Hw41sq19TObOW"
upstream_id"cab0c81a67814635acfe4f681f4b3d4f"
total_cost0.000615
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.25% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
015
117
217
315
414
513
615
717
816
914
1014
1116
1215
1314
1417
1516
1616
1715