Model

Writer: Palmyra X5

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYYXNV5XFCH4J5462KM0YYK

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 rain fell in silver sheets over the crumbling stone mansion nestled deep within the ancient forest’s shadowed edge. Inside, a grandfather clock struck midnight as a single candle flickered weakly against the oppressive darkness of the main hallway. Footsteps echoed—too light to be the butler’s, too steady to belong to the nervous housekeeper—moving swiftly toward the library door. A muffled gasp pierced the silence, followed by the sharp scent of almonds spreading slowly through the cold, damp air of the study. The body lay sprawled across the Persian rug, one hand clutching a torn letter, the other outstretched toward a shattered monocle. Blood pooled beneath the victim’s head, mixing with spilled brandy from an overturned glass beside an empty, unlabeled wine bottle. No one had heard the shot, though the window was open, its curtains flapping like ghostly wings in the storm-lashed night breeze. The family heirloom dagger was missing from the display case, its absence noted by the maid who entered with fresh firewood at dawn. Detective Mallory arrived at nine a.m., trench coat soaked, eyes scanning every guest with quiet, practiced suspicion hidden behind his thin smile. Each guest claimed innocence, yet all wore expressions strained by secrets too heavy to speak and fears too dark to name aloud.
created_at"2026-02-08T15:46:34.786813+00:00" Sunday, February 8th, 2026 at 3:46:34 PM GMT+00:00
model"writer/palmyra-x5-20250428" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1592
moderation_latency158
generation_time5255
tokens_prompt35
tokens_completion277
native_tokens_prompt273
native_tokens_completion279
native_tokens_completion_images(null)
native_tokens_reasoning0
native_tokens_cached0
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"stop" 
usage0.0018378
router(null)
provider_responses
0
status200
is_byokfalse
latency1591
endpoint_id"c684c4e7-1b77-4ca5-9516-7ecc66e2c455" 
provider_name"Amazon Bedrock" 
model_permaslug"writer/palmyra-x5-20250428" 
api_type"completions" 
id"gen-1770565588-kjykrXPZx6HlhdPSfTIS" 
upstream_id(null)
total_cost0.0018378
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock" 

Evaluation details

Result Evaluator Details Meta Data
36.5239% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
019
120
222
323
421
520
623
723
822
922