NC Bench
Overview
About
Tests
Models
Model
Writer: Palmyra X5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYYT3S1518RT7MGGZX9XE9Q
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 hard on the old mansion’s cracked stone steps, echoing through the silent, fog-laden night. Detective Mara Voss pulled her trench coat tighter, boots splashing through puddles as she approached the dimly lit front door. A butler in a wrinkled uniform opened the door, his face pale, hands trembling slightly beneath silver candlesticks. He whispered that the master was found dead in the study, throat slit, eyes wide with frozen terror. The clock struck midnight as Mara stepped across the threshold, a chill crawling up her spine despite the warm hall. Portraits of stern ancestors watched her pass, their eyes seeming to follow her toward the crime scene ahead. Blood pooled near the oak desk, smeared slightly, as if someone had tried to wipe it with a cloth. A single glove lay beneath the window, black silk, torn at the thumb, smelling faintly of lavender and gunpowder. Mara knelt, examining the glove, noticing a monogram stitched in dark thread: *E.B.*, barely visible in the weak light. The fireplace crackled, casting long shadows that danced like specters along the bloodstained walls of the silent room.
created_at
"2026-02-08T15:44:40.092824+00:00"
Sunday, February 8th, 2026 at 3:44:40 PM GMT+00:00
model
"writer/palmyra-x5-20250428"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
4598
moderation_latency
175
generation_time
7238
tokens_prompt
35
tokens_completion
252
native_tokens_prompt
273
native_tokens_completion
251
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
0.0016698
router
(null)
provider_responses
0
status
200
is_byok
false
latency
4598
endpoint_id
"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name
"Amazon Bedrock"
model_permaslug
"writer/palmyra-x5-20250428"
api_type
"completions"
id
"gen-1770565472-HN6flVj4NQoojipfWKMw"
upstream_id
(null)
total_cost
0.0016698
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
44.9627%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
18
1
20
2
18
3
18
4
20
5
18
6
19
7
19
8
19
9
18