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Run: 2026-10-27-01M5YG0VBXKQMB7R2KPCAMCXKV
Run Details
Model:
Kimi K3.1 Pro (Reasoning, Max)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
2m 42s
Cost:
$0.053880
Provider:
Moonshot AI
Evaluation summary
Score
Evaluator
Details Link
100.00%
Matches word count
(details)
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 midnight train hissed into Bellweather Station, where rain silvered the platform and Detective Mara Venn found nobody waiting there. Inside the locked waiting room, a single lamp burned above the ticket clerk's desk, though the clerk himself had vanished. On the tracks, the stationmaster lay beneath a tarpaulin, one polished shoe exposed and his silver whistle nowhere in sight. Mara knelt, touched his wrist, and found no pulse; a narrow wound beneath his ribs had soaked his linen shirt. She opened the fabric carefully and discovered a stopped watch, its cracked crystal holding a black feather against the hands. Behind her, the waiting room door unlocked with a delicate click, and someone began whistling the stationmaster's favorite tune softly. She recognized the melody instantly; her missing sister had hummed it on the night she vanished, exactly twenty years earlier. Mara rose without turning, one hand inside her coat, as the whistling faltered and the platform lights died at once.
created_at
"2026-10-27T10:55:42.471Z"
10/27/2026, 10:55:42 AM
model
"moonshotai/kimi-k3.1-pro-20261023"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1292
moderation_latency
(null)
generation_time
162407
tokens_prompt
46
tokens_completion
5751
native_tokens_prompt
120
native_tokens_completion
5364
native_tokens_completion_images
(null)
native_tokens_reasoning
5150
native_tokens_cached
0
num_media_prompt
(null)
num_input_audio_prompt
(null)
num_media_completion
0
num_search_results
(null)
num_fetches
(null)
web_search_engine
(null)
origin
"https://ncbench.com/"
is_byok
false
finish_reason
"stop"
native_finish_reason
"stop"
service_tier
(null)
usage
0.05388
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer
(null)
request_id
"req-1793098542-fBmmwzLLKyDayJR9Pnfe"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1793098542-VSf3HOwvuJpMu5KIkUN6"
upstream_id
"chatcmpl-6ae0832ec93cca9de3197d26"
provider_responses
0
endpoint_id
"a3fafaac-f097-4ef1-86b3-842854dad5c6"
id
"chatcmpl-6ae0832ec93cca9de3197d26"
is_byok
false
latency
1292
model_permaslug
"moonshotai/kimi-k3.1-pro-20261023"
provider_name
"Moonshot AI"
status
200
total_cost
0.05388
cache_discount
(null)
upstream_inference_cost
0
provider_name
"Moonshot AI"
response_cache_source_id
(null)
data_region
"global"
workspace_id
"97e315e5-d303-487d-83c1-83180e8a13d4"
Evaluation details
Result
Evaluator
Details
Meta Data
100.00%
Matches word count
n/a
neededClean
false
sentences
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20