Run: 2026-02-20-01KHY86XQAVG0SVWYSAJWF7XVJ

Run Details

Model:
Grok 4
Duration:
11.3s
Cost:
$0.006025
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
83.51% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The fog shrouded the ancient manor on that fateful night. Detective Harlan arrived promptly at the dimly lit crime scene. A lifeless body lay sprawled across the ornate parlor floor. Blood stained the Persian rug near the antique fireplace. Suspects gathered nervously in the adjoining shadowed drawing room. Lady Victoria clutched her pearls with trembling, manicured hands. Sir Reginald paced anxiously while smoking a fine cigar. The maid whispered secrets to the stern-faced butler nearby. Harlan inspected clues scattered around the victim's cold form. A poisoned chalice rested ominously on the mahogany table. Thunder rumbled outside as the investigation truly began unfolding.
created_at"2026-02-20T19:25:16.408Z" 2/20/2026, 7:25:16 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6625
moderation_latency(null)
generation_time11136
tokens_prompt46
tokens_completion184
native_tokens_prompt719
native_tokens_completion362
native_tokens_completion_images0
native_tokens_reasoning229
native_tokens_cached694
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"
usage0.0060255
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"9127242b-a1e7-52c0-cb97-01fc0395bde3"
is_byokfalse
latency78
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615516-IE0fUteT86hxAdWFXwOj"
upstream_id"9127242b-a1e7-52c0-cb97-01fc0395bde3"
total_cost0.0060255
cache_discount0.0015615
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
83.51% Matches word count n/a
neededCleanfalse
sentences11
wordCounts
010
110
210
39
49
59
69
710
89
99
109