Run: 2026-02-20-01KHYA28G9WFHG9VQXZ58BK3K9

Run Details

Model:
Grok 4
Duration:
14.2s
Cost:
$0.006556
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
77.52% 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 misty fog enveloped the quaint Victorian mansion as Detective Eliza Thorne arrived at the dimly lit driveway late that evening. She stepped out of her car, noticing the eerie silence broken only by distant owl hoots and crunching gravel underfoot. Inside, the grand hallway smelled of polished wood and faint lavender, with shadows dancing from a flickering chandelier overhead. A butler greeted her solemnly, his face pale and drawn, leading her toward the study where tragedy had just unfolded. There, sprawled on the Persian rug, lay the body of millionaire industrialist Victor Hargrove, a single gunshot wound piercing his chest. Eliza knelt down carefully, observing the scattered papers and overturned lamp, clues whispering secrets of betrayal and hidden motives. Outside, rain began to patter against the windows, as suspects gathered in the parlor, each harboring their own dark suspicions.
created_at"2026-02-20T19:57:40.755Z" 2/20/2026, 7:57:40 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6965
moderation_latency(null)
generation_time14164
tokens_prompt46
tokens_completion234
native_tokens_prompt719
native_tokens_completion401
native_tokens_completion_images0
native_tokens_reasoning226
native_tokens_cached718
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"completed"
usage0.0065565
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"3eb1c949-af41-e852-84af-ea963216c8ec"
is_byokfalse
latency74
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617460-98I4T5OkcqzyBbZtOzMo"
upstream_id"3eb1c949-af41-e852-84af-ea963216c8ec"
total_cost0.0065565
cache_discount0.0016155
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
77.52% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
021
120
219
320
421
519
620