NC Bench
Overview
About
Tests
Models
Model
Writer: Palmyra X5
Test
N-Length Sentences
Scenario
Write sentences with 10 words each
Run ID
2026-02-08-01KGYX4CF13TDRNBXKG6YD08KX
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain tapped the windowpane like secrets wanting out. Detective Mara Vex stirred cold coffee, thoughts circling yesterday’s silence. The coroner’s van idled by Elm Street’s crooked hydrant, waiting. A single glove lay in the gutter, fingers splayed in shock. No footprints marred the wet sidewalk near the body. She knelt, noting how the victim’s watch stopped at 3:03. Blood bloomed under the man’s ear, dark as old ink. His overcoat pocket held a train ticket to nowhere town. Mara frowned at the name penciled faintly on the stub. Crowds murmured, but no one claimed they’d seen a struggle. Her partner coughed, offering a yellowed photo taken at dusk. The victim’s eyes, wide open, reflected someone not standing there. A child’s balloon drifted down, red and quietly drifting.
created_at
"2026-02-08T15:15:15.620414+00:00"
Sunday, February 8th, 2026 at 3:15:15 PM GMT+00:00
model
"writer/palmyra-x5-20250428"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
861
moderation_latency
172
generation_time
3254
tokens_prompt
35
tokens_completion
194
native_tokens_prompt
273
native_tokens_completion
197
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
0.0013458
router
(null)
provider_responses
0
status
200
is_byok
false
latency
857
endpoint_id
"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name
"Amazon Bedrock"
model_permaslug
"writer/palmyra-x5-20250428"
api_type
"completions"
id
"gen-1770563711-nvtaPIJ8FsJE7QgVSlHh"
upstream_id
(null)
total_cost
0.0013458
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
88.6435%
Matches word count
n/a
neededClean
false
sentences
13
wordCounts
0
8
1
10
2
10
3
11
4
9
5
10
6
10
7
10
8
10
9
10
10
10
11
10
12
9