Run: 2026-02-20-01KHY7YH6EPS93J9R78VFTC16C

Run Details

Model:
Grok 4
Duration:
16.6s
Cost:
$0.007949
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
63.81% 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 mansion loomed on the hill, its windows like eyes watching the guests arrive one by one that night. Eleanor stepped inside first, her elegant gown whispering secrets, while the host greeted her with a smile hiding unknown motives. Detective Harlan followed closely behind, invited unexpectedly, his keen eyes scanning the room for any signs of impending trouble. The butler announced dinner promptly at eight, as thunder rumbled outside, setting a tense atmosphere among the assembled strangers. Seated around the antique table, conversations flowed uneasily, with whispers of old grudges surfacing like ghosts from the past. Suddenly, a scream pierced the air from upstairs, freezing everyone in place as footsteps hurried toward the source of alarm. They found Lord Harrington sprawled on the floor, blood pooling beneath him, a dagger clutched in his lifeless hand. Eleanor gasped in horror at the sight, while Harlan knelt down, examining clues that might reveal the killer's identity. The storm raged on outside the windows, trapping them all inside with suspicions mounting higher than the howling winds. Who among these guests held the motive, Harlan wondered silently, as alibis began crumbling under his piercing gaze.
created_at"2026-02-20T19:20:41.433Z" 2/20/2026, 7:20:41 PM
model"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7197
moderation_latency(null)
generation_time16542
tokens_prompt46
tokens_completion323
native_tokens_prompt719
native_tokens_completion488
native_tokens_completion_images0
native_tokens_reasoning243
native_tokens_cached679
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"
usage0.00794925
router(null)
provider_responses
0
endpoint_id"d40bef9d-6936-4c57-9749-bf7399de4a77"
id"a8ae87bf-2a69-785f-6dce-1dd62c56af1d"
is_byokfalse
latency382
model_permaslug"x-ai/grok-4-07-09" 4/7/2009, 12:00:00 AM
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615241-tr5d70YRsYD98K5ZK15K"
upstream_id"a8ae87bf-2a69-785f-6dce-1dd62c56af1d"
total_cost0.00794925
cache_discount0.00152775
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
63.81% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
021
120
219
319
419
520
619
719
819
918