Run: 2026-02-20-01KHXQC6BF2ZV907QH1GZSD6YV

Run Details

Duration:
9.2s
Cost:
$0.000657
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 damp wool, copper, and something sickly sweet—cheap perfume or decay. A shadow shifted near the fire escape, but when Harlow looked, nothing remained. The victim’s pocket watch had stopped at 11:47, its hands frozen in silent accusation. Harlow’s partner, Reeves, arrived panting, his breath curling in the frigid, wet air. “Another one,” Reeves muttered, his voice tight with the weight of too many unsolved cases. The crowd at the alley’s mouth whispered, their faces pale under the flickering streetlamp’s glare. Harlow’s fingers brushed the card, its edges damp but the ink still crisp and unblurred. A distant church bell tolled midnight, its mournful chime swallowed by the relentless rain. The victim’s coat bore a monogram—*E.V.*—stitched in thread that matched the blood. Reeves crouched beside the body, his gloved hands probing for clues in the dim light. Harlow’s gaze lingered on the fire escape, where a single, muddy boot print glistened. The killer had vanished like smoke, leaving only questions and the scent of betrayal behind.
created_at"2026-02-20T14:31:03.292Z" 2/20/2026, 2:31:03 PM
model"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency371
moderation_latency(null)
generation_time9169
tokens_prompt46
tokens_completion497
native_tokens_prompt39
native_tokens_completion425
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached16
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"
usage0.000657
router(null)
provider_responses
0
endpoint_id"fa718841-07ea-4b7e-b8a3-6069545c7e6a"
id"3784d53648974131b3d9e9fe1051df8a"
is_byokfalse
latency371
model_permaslug"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771597863-ZuoYtl4Cg4byVqJ7Uf2R"
upstream_id"3784d53648974131b3d9e9fe1051df8a"
total_cost0.000657
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.01% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
015
115
216
316
416
513
613
714
815
913
1014
1113
1245
1314
1412
1515
1614
1715