Run: 2026-02-20-01KHY8DTCV1RTA1RM15SZTHPXG

Run Details

Duration:
4.0s
Cost:
$0.000226
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
47.70% 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 clock struck midnight in the quiet village square. Fog rolled thickly down from the ancient, looming hills. A scream shattered silence, piercing the cold night air. Villagers rushed out, lanterns flickering in trembling hands. They found her body sprawled on cobblestone path. Blood pooled dark beneath her pale, lifeless face. Constable hurried over, his boots splashing through puddles. "Who discovered this horror in our peaceful town?" The baker pointed, his voice choked with sudden fear. Murder had come, and whispers spread like wildfire.
created_at"2026-02-20T19:29:02.375Z" 2/20/2026, 7:29:02 PM
model"x-ai/grok-4-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2936
moderation_latency(null)
generation_time3844
tokens_prompt46
tokens_completion149
native_tokens_prompt191
native_tokens_completion421
native_tokens_completion_images0
native_tokens_reasoning304
native_tokens_cached151
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"
usage0.00022605
router(null)
provider_responses
0
endpoint_id"c9586d9d-97ff-40ca-ae94-22504d6f9b7e"
id"1200fc9e-e831-20f6-5a14-33de4a65f8b7"
is_byokfalse
latency746
model_permaslug"x-ai/grok-4-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771615742-wYTo4KlxFtMs03DEJF96"
upstream_id"1200fc9e-e831-20f6-5a14-33de4a65f8b7"
total_cost0.00022605
cache_discount0.00002265
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
47.70% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
09
19
29
38
48
58
68
78
89
98