Model

Writer: Palmyra X5

Test

N-Length Sentences

Scenario

Write sentences with 20 words each

Run ID

2026-02-08-01KGYXJGRSNYF4R1YPQ8Y363NB

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 straight silver lines, soaking the cobblestones of Elm Street with quiet, relentless precision. Detective Mara Voss stepped through the yellow tape, her coat damp, her eyes scanning the silent, onlooker-crowded scene. A body lay sprawled near the oak tree, one arm outstretched, fingers curled as if grasping at fading life. Blood pooled beneath the victim’s head, dark as wine, mixing slowly with the rainwater circling the gutters. Neighbors whispered behind cupped hands, their breath visible in the cold dawn air, eyes glinting with fear and curiosity. Mara knelt, gloves snapping taut, noting the victim’s watch had stopped at precisely three seventeen in the morning. A single pearl button rested near the left hand, pristine, out of place on the muddy, trampled grass nearby. She glanced up, spotting a curtain twitch in the gray house directly across the narrow, rain-slicked street. No forced entry was visible on the victim’s front door, which stood slightly ajar, creaking with each breeze. The victim’s name, later confirmed as Arthur Bellweather, meant nothing to Mara, though something in his face felt familiar. She stood, motioning to the forensics team, her mind already tracing invisible threads between the button, the watch, the oak tree. This was no random act, she thought, the pattern too careful, too cold, too deliberately arranged beneath the weeping sky.
created_at"2026-02-08T15:23:16.575644+00:00" Sunday, February 8th, 2026 at 3:23:16 PM GMT+00:00
model"writer/palmyra-x5-20250428" 
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17641
moderation_latency195
generation_time21411
tokens_prompt35
tokens_completion310
native_tokens_prompt273
native_tokens_completion316
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" 
usage0.0020598
router(null)
provider_responses
0
status200
is_byokfalse
latency17637
endpoint_id"c684c4e7-1b77-4ca5-9516-7ecc66e2c455" 
provider_name"Amazon Bedrock" 
model_permaslug"writer/palmyra-x5-20250428" 
api_type"completions" 
id"gen-1770564174-HOcVrOMdAz8Y4OE2Y5AA" 
upstream_id(null)
total_cost0.0020598
cache_discount(null)
upstream_inference_cost0
provider_name"Amazon Bedrock" 

Evaluation details

Result Evaluator Details Meta Data
42.2284% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
017
119
219
317
419
518
619
718
818
919
1021
1120