Run: 2026-02-20-01KHXPCWY29M0TQF4V7D5DJM9W

Run Details

Duration:
8.5s
Cost:
$0.000612
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
1.93% 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, freezing him mid-step near the alley’s mouth. The body lay sprawled beneath the flickering streetlamp, limbs twisted like a discarded marionette’s strings. Blood, black in the dim light, snaked across the pavement, mixing with rain in macabre rivulets. Harlow knelt, ignoring the cold seeping through his trousers, and studied the victim’s pale, lifeless face. A playing card—ace of spades—rested on the chest, damp edges curling like a taunting smirk. The victim’s gloved hand clutched a torn scrap of paper, ink bleeding into illegible, frantic smears. A shadow shifted at the alley’s end, just beyond the reach of the sputtering, dying lamplight. Harlow’s fingers twitched toward his revolver, but the figure vanished before he could draw breath. The distant wail of a police whistle cut through the storm, sharp and urgent, like a warning. He exhaled, fog curling in the air, and wondered which secrets this corpse would refuse to keep. The rain showed no sign of stopping, as if the sky itself mourned the dead in endless tears. Harlow stood, water dripping from his coat, and knew this case would unravel more than just lies. A single, crimson rose lay near the body, petals bruised by the relentless, pounding rain. The detective’s pulse quickened; this wasn’t just murder—it was a message, bold and unmistakable. He pulled out his notebook, pencil hovering, as the first drops of truth began to fall.
created_at"2026-02-20T14:13:57.841Z" 2/20/2026, 2:13:57 PM
model"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency355
moderation_latency(null)
generation_time8429
tokens_prompt46
tokens_completion457
native_tokens_prompt39
native_tokens_completion395
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"
usage0.000612
router(null)
provider_responses
0
endpoint_id"fa718841-07ea-4b7e-b8a3-6069545c7e6a"
id"3c9643d72fa842c5b4888fe761f40d27"
is_byokfalse
latency355
model_permaslug"mistralai/mistral-large-2512" 1/1/2512, 12:00:00 AM
provider_name"Mistral"
status200
api_type"completions"
id"gen-1771596837-FD1FWssMHI8EwjRbejWm"
upstream_id"3c9643d72fa842c5b4888fe761f40d27"
total_cost0.000612
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"

Evaluation details

Result Evaluator Details Meta Data
1.93% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
015
117
218
315
416
516
617
716
816
915
1017
1117
1218
1317
1415
1515
1616