NC Bench
Overview
About
Tests
Models
Model
MoonshotAI: Kimi K2.5
Test
N-Length Sentences
Scenario
Write sentences with 20 words each
Run ID
2026-02-08-01KGYYHF8Q94AXXZEKWVJK3T1M
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 chandelier flickered overhead as Lady Blackwood collapsed onto the Persian rug, her necklace scattering beads across the polished floor. Detective Miller stood frozen near the grand piano, his champagne glass hovering midway between the tray and his parted lips. Three hundred guests fell silent simultaneously, their festive masks suddenly grotesque against the backdrop of dying candles and whispered suspicions. Someone had finally silenced the hostess who threatened to reveal every dirty secret hidden within these gilded manor walls tonight. Miller knelt beside the body, noticing the thin trickle of blood beneath her diamond tiara and those vacant staring eyes. The orchestra had stopped playing, leaving only the ticking grandfather clock to mark time until justice would finally be served.
created_at
"2026-02-08T15:40:37.231391+00:00"
Sunday, February 8th, 2026 at 3:40:37 PM GMT+00:00
model
"moonshotai/kimi-k2.5-0127"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
739
moderation_latency
(null)
generation_time
47882
tokens_prompt
35
tokens_completion
2474
native_tokens_prompt
42
native_tokens_completion
2511
native_tokens_completion_images
(null)
native_tokens_reasoning
1971
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
0.0075582
router
(null)
provider_responses
0
id
"chatcmpl-6988ae4587e031ddc5c57ac8"
status
200
is_byok
false
latency
739
endpoint_id
"49762299-66fd-4514-b0ee-c9e11e231e3b"
provider_name
"Moonshot AI"
model_permaslug
"moonshotai/kimi-k2.5-0127"
api_type
"completions"
id
"gen-1770565188-7IoT5Be8Le7UF02RRL9i"
upstream_id
"chatcmpl-6988ae4587e031ddc5c57ac8"
total_cost
0.0075582
cache_discount
(null)
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
6
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20