Run: 2026-02-20-01KHXQG3F1M6EXMG48T5HQNW7Y

Run Details

Duration:
7.8s
Cost:
$0.000522
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
0.17% 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 mixed with rainwater, swirling into the gutter where a single pearl earring glinted. Harlow knelt, ignoring the cold seeping through his trousers, and studied the lifeless, staring eyes. The victim’s coat bore a monogram—*E.V.*—stitched in silver thread near the torn pocket. A shadow shifted near the bakery’s awning, but when Harlow looked, only darkness answered. The scent of fresh bread lingered, oddly sweet against the metallic tang of death in the air. A constable arrived, breathless, his lantern casting long, trembling fingers across the grim scene. “No witnesses yet,” the young officer muttered, his voice barely louder than the drumming rain. Harlow’s fingers brushed the knife’s hilt, noting the absence of fingerprints in the slick blood. A torn scrap of paper peeked from the victim’s sleeve, ink smudged but legible: *Midnight. Dock 12.* The alley’s mouth yawned open, swallowing the last of the fading scream into its hungry silence. Harlow stood, his mind already racing, knowing this murder was just the first thread of something darker.
created_at"2026-02-20T14:33:11.404Z" 2/20/2026, 2:33:11 PM
model"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency829
moderation_latency(null)
generation_time7714
tokens_prompt46
tokens_completion397
native_tokens_prompt39
native_tokens_completion335
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"
usage0.000522
router(null)
provider_responses
0
endpoint_id"fa718841-07ea-4b7e-b8a3-6069545c7e6a"
id"e93006097c7b4c9bb3a627320e4dbd5e"
is_byokfalse
latency829
model_permaslug"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771597991-QwdvGBrmNL6njamBWmhr"
upstream_id"e93006097c7b4c9bb3a627320e4dbd5e"
total_cost0.000522
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
0.17% Matches word count n/a
neededCleanfalse
sentences14
wordCounts
015
115
216
316
414
515
613
714
817
914
1045
112
1216
1317