Run: 2026-10-27-01M5YG0VBXKQMB7R2KPCAMCXKV

Run Details

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

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_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1292
moderation_latency(null)
generation_time162407
tokens_prompt46
tokens_completion5751
native_tokens_prompt120
native_tokens_completion5364
native_tokens_completion_images(null)
native_tokens_reasoning5150
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"stop"
service_tier(null)
usage0.05388
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_byokfalse
latency1292
model_permaslug"moonshotai/kimi-k3.1-pro-20261023"
provider_name"Moonshot AI"
status200
total_cost0.05388
cache_discount(null)
upstream_inference_cost0
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
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720