NC Bench
Overview
About
Tests
Models
Model
Writer: Palmyra X5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYYQJ17P7MWRH4G84EMT557
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 cobblestone streets of Blackthorn Hollow, echoing secrets the town refused to speak aloud. Detective Eleanor Blake stepped from her worn sedan, trench coat damp, eyes scanning the shadowed alley where the body was found. A single lamplight flickered above the crime scene, illuminating the pale hand protruding from beneath a bloodstained velvet cloak. Sergeant Calloway approached, breath visible in the cold, holding a notepad with trembling, gloveless fingers despite the winter chill. No witnesses had come forward, though every shuttered window likely hid a pair of watching eyes filled with fear or guilt. The victim, later identified as reclusive novelist Victor Hale, lay faceup, a fountain pen plunged deep into his left temple. Blood mixed with rainwater formed thin crimson rivulets that snaked toward the gutter, carrying whispers of unfinished stories. His manuscript pages were scattered nearby, fluttering like wounded birds, each page ending mid-sentence as if fear had struck first. Eleanor knelt, careful not to disturb evidence, and noticed the pen's gold engraving: "To V — may your words live forever." She glanced toward the empty balcony of the old Victorian library, where a broken window suggested a hurried, unseen escape. Something about the scene felt staged—a narrative constructed not just to kill, but to tell a very specific, chilling tale.
created_at
"2026-02-08T15:43:30.914219+00:00"
Sunday, February 8th, 2026 at 3:43:30 PM GMT+00:00
model
"writer/palmyra-x5-20250428"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
17801
moderation_latency
208
generation_time
21489
tokens_prompt
35
tokens_completion
293
native_tokens_prompt
273
native_tokens_completion
297
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
0.0019458
router
(null)
provider_responses
0
status
200
is_byok
false
latency
17799
endpoint_id
"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name
"Amazon Bedrock"
model_permaslug
"writer/palmyra-x5-20250428"
api_type
"completions"
id
"gen-1770565388-qMZosHEI03jgOV6s8ksT"
upstream_id
(null)
total_cost
0.0019458
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
67.1005%
Matches word count
n/a
neededClean
false
sentences
11
wordCounts
0
19
1
21
2
19
3
19
4
21
5
20
6
18
7
21
8
20
9
20
10
21