Run: 2026-10-27-01M5YH5CKN4QQJYQS5DX5Y61MR

Run Details

Duration:
1m 51s
Cost:
$0.041480
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 rain stopped at midnight, leaving Blackwood House shining beneath the moon, while its master lay dead inside the study. Detective Mara Venn arrived to find six guests silent in the hall, each avoiding her eyes and the grand staircase. Above them, a clock struck once, though every witness swore the mechanism had been broken for twenty years until now. The study door remained locked from within, and beside the body waited an empty glass smelling faintly of bitter almonds. No window stood open, no chimney offered passage, and the only key still rested deep inside the victim's waistcoat pocket. Mara photographed the room, then noticed fresh ink beneath one fingernail and a paper cut across his own left thumb. On the desk, an unfinished letter named one guest as a thief, a traitor, and the killer among them all. One line had been sliced from the page, leaving a date, three violet words, and no signature anywhere at all. Mara read those words twice, then turned toward the guests as the clock struck a second impossible time behind her. Before Mara could speak, every candle died, and a seventh set of footsteps began slowly descending the staircase above them.
created_at"2026-10-27T11:15:39.776Z" 10/27/2026, 11:15:39 AM
model"moonshotai/kimi-k3.1-pro-20261023"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1730
moderation_latency(null)
generation_time111432
tokens_prompt46
tokens_completion4224
native_tokens_prompt120
native_tokens_completion4124
native_tokens_completion_images(null)
native_tokens_reasoning3872
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)
usage0.04148
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.22.1; linux; x64))"
http_referer(null)
request_id"req-1793099739-ZyuKRc1L0EHJdJ7cE3kh"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1793099739-HTGcOWt6RLvCBV4ACPap"
upstream_id"chatcmpl-6ae087dcbe599f3ecd49bd8d"
provider_responses
0
endpoint_id"a3fafaac-f097-4ef1-86b3-842854dad5c6"
id"chatcmpl-6ae087dcbe599f3ecd49bd8d"
is_byokfalse
latency1730
model_permaslug"moonshotai/kimi-k3.1-pro-20261023"
provider_name"Moonshot AI"
status200
total_cost0.04148
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
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920