Run: 2026-02-20-01KHYA5BVSB57QPK2FY28E0JP5

Run Details

Model:
Grok 4
Duration:
19.8s
Cost:
$0.008492
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
84.45% 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 manor house loomed ominously against the night sky. Detective Harlan arrived promptly at the dimly lit crime scene. Blood stained the antique rug in the grand drawing room. Lady Victoria lay motionless with a dagger in her chest. Suspects gathered nervously in the adjacent library, whispering secrets. The butler fidgeted while polishing silverware with trembling hands. A mysterious letter rested unread on the mahogany desk nearby. Thunder rumbled outside as rain pelted the tall windows. Harlan examined clues carefully, noting inconsistencies in alibis provided. The plot thickened with each revelation from hidden motives.
created_at"2026-02-20T19:59:22.501Z" 2/20/2026, 7:59:22 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13907
moderation_latency(null)
generation_time19689
tokens_prompt46
tokens_completion173
native_tokens_prompt719
native_tokens_completion530
native_tokens_completion_images0
native_tokens_reasoning399
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"
usage0.0084915
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"c0d1f7b0-5f2a-8894-ec3e-6adc470465cb"
is_byokfalse
latency541
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771617562-iYU9tZ3accYxkNPFURa4"
upstream_id"c0d1f7b0-5f2a-8894-ec3e-6adc470465cb"
total_cost0.0084915
cache_discount0.0016155
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
011
110
210
310
49
59
610
79
89
99