Run: 2026-02-20-01KHY9V4CVA6DJT502TP6V5EC2

Run Details

Model:
Grok 4
Duration:
15.9s
Cost:
$0.008686
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
68.52% 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 fog-shrouded streets of Victorian London whispered secrets as Inspector Eliza Thorn approached the dimly lit alleyway crime scene. A lifeless body lay sprawled on cold cobblestones, its eyes wide open in eternal shock from an unseen assailant. She knelt down carefully to examine the victim, noting a peculiar silver locket clutched tightly in the rigid fingers. Footsteps echoed suddenly from the shadows nearby, prompting Eliza to draw her revolver while scanning the misty surroundings alertly. A mysterious figure emerged slowly into the lamplight, hands raised in surrender, claiming to have witnessed the brutal murder moments earlier.
created_at"2026-02-20T19:53:47.173Z" 2/20/2026, 7:53:47 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11269
moderation_latency(null)
generation_time15835
tokens_prompt46
tokens_completion169
native_tokens_prompt719
native_tokens_completion543
native_tokens_completion_images0
native_tokens_reasoning423
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"
usage0.0086865
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"5f150f17-1f6d-51f4-52ce-de4c76a1b202"
is_byokfalse
latency73
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617227-8UYITg1cByKyIUQftRi9"
upstream_id"5f150f17-1f6d-51f4-52ce-de4c76a1b202"
total_cost0.0086865
cache_discount0.0016155
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
68.52% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
119
219
319
421