NC Bench
Overview
About
Tests
Models
Model
Writer: Palmyra X5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYZH1BQNKT093Z9QDK4NW04
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
Messages
Meta
AI
The rain fell like shattered glass upon the cobbled streets of Blackthorn Hollow at exactly ten past midnight. Detective Eleanor Vance pulled her trench coat tight, the wind whispering secrets through the skeletal trees lining the manor’s drive. A single light burned in the upstairs window of the old Grayson estate, flickering as though someone had just left. She counted seventeen footsteps from the gate to the porch, each one muffled by the wet, decaying leaves underfoot. The front door creaked open before she could knock, revealing a butler with eyes wide and a silver tray trembling in his hands. “Master Grayson,” he stammered, “lies where he fell, sir, though I swear I heard only silence until now.” Blood pooled beneath the body, dark and thick, spreading slowly across the Persian rug like an inkblot confession. A pocket watch lay smashed on the floor, hands frozen at ten minutes past ten, though the clock read nearly midnight. No weapon was visible, but the wound on his temple suggested blunt force, precise, delivered by someone he had trusted. A photograph facedown near the fireplace showed the edge of a woman’s face, smudged with what might have been tears or dirt. The fire crackled, casting long shadows that danced like guilty figures fleeing across the bookshelves lined with leather-bound alibis. Outside, a dog barked once, sharply, then fell silent, as if warned not to speak of what it had seen. Eleanor knelt beside the corpse, noticing the faint scent of lavender beneath the iron tang of spilled blood on the air. She pulled a pair of gloves from her coat, snapped them on, and whispered, “Someone didn’t want this night to end quietly.” The butler shifted behind her, his reflection fractured in a mirror cracked down the center, just like the victim’s skull. A clock chimed eleven, though all others in the room remained still, their faces dark, as if time itself were lying.
created_at
"2026-02-08T15:57:20.0842+00:00"
Sunday, February 8th, 2026 at 3:57:20 PM GMT+00:00
model
"writer/palmyra-x5-20250428"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
10112
moderation_latency
192
generation_time
15921
tokens_prompt
35
tokens_completion
421
native_tokens_prompt
273
native_tokens_completion
426
native_tokens_completion_images
(null)
native_tokens_reasoning
0
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
usage
0.0027198
router
(null)
provider_responses
0
status
200
is_byok
false
latency
10112
endpoint_id
"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name
"Amazon Bedrock"
model_permaslug
"writer/palmyra-x5-20250428"
api_type
"completions"
id
"gen-1770566223-toVei9mTKOJD1Kne9YlJ"
upstream_id
(null)
total_cost
0.0027198
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
53.1905%
Matches word count
n/a
neededClean
false
sentences
15
wordCounts
0
18
1
20
2
20
3
19
4
23
5
18
6
18
7
21
8
20
9
22
10
20
11
20
12
21
13
42
14
21