NC Bench
Overview
About
Tests
Models
Model
Writer: Palmyra X5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYZR69Y1F0V30YAHMSF78EV
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 cobblestones, echoing through the silent, shadowed streets of the old city district late one Tuesday night. Detective Mara Voss pulled her coat tighter, boots splashing through puddles as she approached the dimly lit townhouse on Willow Lane. Yellow police tape fluttered in the wind, fluttering like a warning ribbon stretched between the iron gate and a broken potted fern. Inside, the parlor was freezing, the fire long dead, but the room reeked of burnt almonds and something darker, coppery like blood. A man lay sprawled across the Persian rug, eyes wide open, mouth frozen in surprise, a silver letter opener buried in his chest. No one had heard a scream, the butler claimed, though the windows were cracked open and the clock had stopped at 9:17 exactly. Mara crouched beside the body, noting the polished shoes, the gold cufflinks, the faint smudge of lipstick on his right cheek. The victim was Charles Dunleigh, head of Dunleigh Shipping, recently divorced, currently embroiled in a scandal involving missing cargo and a mistress in Lisbon. She scanned the bookshelves, the untouched brandy glasses, the torn photograph near the hearth showing half a smiling couple violently ripped apart. Someone wanted him dead, someone close, someone who knew his routines, his secrets, his weaknesses—and who’d left behind almost no trace at all.
created_at
"2026-02-08T16:01:05.597439+00:00"
Sunday, February 8th, 2026 at 4:01:05 PM GMT+00:00
model
"writer/palmyra-x5-20250428"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
3391
moderation_latency
175
generation_time
6822
tokens_prompt
35
tokens_completion
298
native_tokens_prompt
273
native_tokens_completion
305
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
0.0019938
router
(null)
provider_responses
0
status
200
is_byok
false
latency
3391
endpoint_id
"c684c4e7-1b77-4ca5-9516-7ecc66e2c455"
provider_name
"Amazon Bedrock"
model_permaslug
"writer/palmyra-x5-20250428"
api_type
"completions"
id
"gen-1770566457-sWmD1GW05mZJZUFeiIxs"
upstream_id
(null)
total_cost
0.0019938
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Amazon Bedrock"
Evaluation details
Result
Evaluator
Details
Meta Data
22.4849%
Matches word count
n/a
neededClean
false
sentences
10
wordCounts
0
21
1
21
2
22
3
22
4
23
5
23
6
21
7
24
8
22
9
24