Run: 2026-10-06-01M48VTTKRQXN2QP0PE3H7JKS2

Run Details

Duration:
10.7s
Cost:
$0.000435
Provider:
Mistral

Evaluation summary

Score Evaluator
Details Link
37.09% 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 shook the ancient stone walls of the sprawling estate. Lord Pemberton's body lay sprawled across the Persian rug with a silver letter opener protruding from his chest. Three guests stood frozen in the doorway, their faces pale with shock and something far more sinister hidden. The butler, Jenkins, clutched a silver tray and whispered that no one had left the house since dinner. A single red rose lay beside the corpse, its petals already wilting in the stagnant air of the room. Mara noticed muddy footprints leading from the body toward the library but none returning to any other part of the house. The storm outside raged louder now, as if nature itself conspired to keep the killer trapped within these walls.
created_at"2026-10-06T15:03:08.672Z" 10/6/2026, 3:03:08 PM
model"mistralai/mistral-large-4-0-20261006"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1021
moderation_latency(null)
generation_time10691
tokens_prompt46
tokens_completion226
native_tokens_prompt50
native_tokens_completion192
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"
usage0.00043528
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer(null)
request_id"req-1791298988-oL13oEng4NZyQcOrrzYk"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1791298988-QToW6xJ5GEU7iqcogAnd"
upstream_id"caa35d0c1bcd4218928bf2eee0a87b45"
provider_responses
0
endpoint_id"19b3b5d7-23f6-4b63-8109-64a6cc37d996"
id"caa35d0c1bcd4218928bf2eee0a87b45"
is_byokfalse
latency968
model_permaslug"mistralai/mistral-large-4-0-20261006"
provider_name"Mistral"
status200
total_cost0.00043528
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
37.09% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
021
118
218
318
418
519
621
719