NC Bench
Overview
About
Tests
Models
Model
MoonshotAI: Kimi K2.5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYZB1FYQG5H0XZ82GMK45D2
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 lashed against the windows of the old Victorian mansion as guests gathered in the candlelit drawing room tonight. Lady Blackwood's body lay sprawled across the Persian carpet, her emerald necklace missing and her eyes staring at the ceiling. Detective Miller stepped forward, his shoes clicking against the marble floor while everyone held their breath in absolute deafening silence. "Nobody leaves this room," he commanded, scanning the faces of the terrified partygoers with his piercing gray eyes narrowed slightly. Outside, thunder crashed as the storm intensified, trapping them all together with a killer hidden somewhere among their very number.
created_at
"2026-02-08T15:55:14.984332+00:00"
Sunday, February 8th, 2026 at 3:55:14 PM GMT+00:00
model
"moonshotai/kimi-k2.5-0127"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
787
moderation_latency
(null)
generation_time
87213
tokens_prompt
35
tokens_completion
4551
native_tokens_prompt
42
native_tokens_completion
4574
native_tokens_completion_images
(null)
native_tokens_reasoning
3843
native_tokens_cached
42
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
0.0137262
router
(null)
provider_responses
0
id
"chatcmpl-6988b18b1f3312997503986c"
status
200
is_byok
false
latency
787
endpoint_id
"49762299-66fd-4514-b0ee-c9e11e231e3b"
provider_name
"Moonshot AI"
model_permaslug
"moonshotai/kimi-k2.5-0127"
api_type
"completions"
id
"gen-1770566026-rTg0nGFpApHOHPb4sKfR"
upstream_id
"chatcmpl-6988b18b1f3312997503986c"
total_cost
0.0137262
cache_discount
0.000021
upstream_inference_cost
0
provider_name
"Moonshot AI"
Evaluation details
Result
Evaluator
Details
Meta Data
100.0000%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
20
1
20
2
20
3
20
4
20