Run: 2026-10-06-01M48VZD7VVR80EKKN5YBD6TDG

Run Details

Duration:
6.1s
Cost:
$0.000674
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
35.14% 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 antique clock in the hallway struck thirteen times as Detective Mara Voss stepped through the front door of Blackwood Manor. Rain lashed against the tall Gothic windows while thunder rolled across the Yorkshire moors that distant evening. Lord Pemberton's body lay sprawled upon the Persian rug, his silver letter opener protruding from his chest like a dark exclamation. Three guests remained in the drawing room, each wearing expressions of practiced shock and carefully concealed guilt beneath their masks. The butler stood rigid beside the fireplace, his white gloves trembling slightly as he clutched a silver tray with both hands. "I found him exactly as you see him now, Detective," he whispered, his voice cracking with theatrical sorrow that rang false. Mara knelt beside the corpse, noting the absence of struggle and the peculiar arrangement of playing cards scattered around the victim's outstretched fingers. A single red rose lay upon Lord Pemberton's chest, its thorns having drawn dark blood that pooled beneath his expensive silk cravat. The detective's eyes traveled slowly across the room, cataloging every nervous twitch and averted glance among the assembled suspects with cold precision. "Someone here murdered my brother," declared Lady Pemberton, her voice steady despite the mascara streaks running down her powdered cheeks like black tears. "And I intend to discover precisely which one of you committed this heinous act before the sun rises tomorrow," Mara replied quietly.
created_at"2026-10-06T15:05:38.816Z" 10/6/2026, 3:05:38 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency686
moderation_latency(null)
generation_time6046
tokens_prompt46
tokens_completion376
native_tokens_prompt50
native_tokens_completion306
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)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
service_tier"default"
usage0.00067354
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791299138-OrSchkMmjUNsF4hsDcEO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791299138-4JtIR2jBBGYWe7o8uJ8E"
upstream_id"55e74037074f482ca046dae069d56ec3"
provider_responses
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endpoint_id"540e63db-cc7c-4556-bb67-d449579bcf1a"
id"55e74037074f482ca046dae069d56ec3"
is_byokfalse
latency686
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00067354
cache_discount(null)
upstream_inference_cost0
provider_name"Mistral"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
35.14% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
021
117
221
320
421
521
623
722
822
923
1022