Run: 2026-02-20-01KHY8VS7RPTWAJYF3YX34CB7H

Run Details

Duration:
5.8s
Cost:
$0.000327
Provider:
xAI

Evaluation summary

Score Evaluator
Details Link
0.00% 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
Rain lashed the ancient manor house on Blackthorn Hill as thunder cracked the midnight sky apart. Detective Eliza Thorne arrived late, her trench coat soaked through from the relentless downpour outside. She pushed open the creaking oak door and stepped into the dimly lit foyer beyond. A butler stood frozen there, his face pale white like a ghost in candlelight glow. "Inspector, thank God you've come so quickly after our frantic emergency call tonight," he stammered. Eliza nodded sharply then followed him down the long corridor lined with stern portraits. Gasps echoed from the drawing room where guests huddled in shocked, terrified silence now. In the center lay Lord Harrington, lifeless on Persian rug with a dagger in chest. Blood pooled darkly around the ornate handle, staining silk threads a deep crimson red. No one spoke as Eliza surveyed the scene, her keen eyes noting every vital clue.
created_at"2026-02-20T19:36:39.938Z" 2/20/2026, 7:36:39 PM
model"x-ai/grok-4.1-fast"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency904
moderation_latency(null)
generation_time5675
tokens_prompt46
tokens_completion288
native_tokens_prompt191
native_tokens_completion635
native_tokens_completion_images0
native_tokens_reasoning450
native_tokens_cached190
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"
usage0.0003272
router(null)
provider_responses
0
endpoint_id"9821aa0e-dce3-4c27-9716-161359123d0b"
id"d13fb739-4fd9-f2e9-0c4a-3a4a206d20b2"
is_byokfalse
latency652
model_permaslug"x-ai/grok-4.1-fast"
provider_name"xAI"
status200
api_type"completions"
id"gen-1771616199-hKhuWbLvxcYWLGPCMnYw"
upstream_id"d13fb739-4fd9-f2e9-0c4a-3a4a206d20b2"
total_cost0.0003272
cache_discount0.0000285
upstream_inference_cost0
provider_name"xAI"

Evaluation details

Result Evaluator Details Meta Data
0.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
016
115
215
315
415
514
614
715
814
915