Run: 2026-02-20-01KHYA8P69CMGEM985XRH5R6J6

Run Details

Model:
Grok 4
Duration:
21.5s
Cost:
$0.008792
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
38.68% 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 ancient manor loomed under a thunderous sky, its jagged silhouette piercing the night as rain lashed the overgrown gardens relentlessly. Inside, flickering candlelight danced on ornate walls, casting long shadows that whispered secrets from a bygone era of wealth and intrigue. Lady Elara glided through the grand hallway, her silk gown rustling softly, eyes scanning the assembled guests with calculated suspicion and hidden dread. Lord Harrington raised his glass in a toast, his voice booming over the storm, masking the tension that simmered beneath polite smiles. Suddenly, a piercing scream echoed from the library, freezing everyone in place as the sound shattered the fragile veneer of civility. Detective Thorne burst into the room, his coat dripping rainwater, badge gleaming under the chandelier as he surveyed the chaotic scene intently. A lifeless body lay sprawled on the Persian rug, blood pooling around the antique dagger embedded deep in the victim's chest.
created_at"2026-02-20T20:01:11.386Z" 2/20/2026, 8:01:11 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency14852
moderation_latency(null)
generation_time21386
tokens_prompt46
tokens_completion256
native_tokens_prompt719
native_tokens_completion550
native_tokens_completion_images0
native_tokens_reasoning367
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"
usage0.0087915
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"79706a68-0ded-8ece-e006-296f591cd89f"
is_byokfalse
latency446
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617671-UY3NVsreUOPkLOdfqzn4"
upstream_id"79706a68-0ded-8ece-e006-296f591cd89f"
total_cost0.0087915
cache_discount0.0016155
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
38.68% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
021
121
223
322
421
522
621