Run: 2026-09-23-01M37NVRQJW772TTEE1Z9AR2HY

Run Details

Duration:
1m 21s
Cost:
$0.025947
Provider:
AionLabs

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 heavy rain hammered against the windows of Blackwood Manor as Detective Sarah Chen arrived at the crime scene tonight. Inside, the lifeless body of old Lord Edmund Blackwood lay sprawled across the Persian rug in his candlelit study room. A silver letter opener protruded from his chest, and his cold eyes stared blankly up at the ceiling above him. The elderly housekeeper, Mrs. Whitmore, had discovered the body at midnight while bringing his usual nightly cup of chamomile tea. Now she sat trembling in the dim hallway, wrapped in a thick blanket, refusing to speak to anyone at all. Sarah knelt beside the body, noting the absence of any blood spatter and the strange calm expression on his face. Whoever killed him had done it quickly, very quietly, and with a precision that suggested this was not random violence. On the desk beside him, a chessboard showed a game in progress, with black just one move from certain victory. The white king had been knocked over, as if by a hand that trembled or perhaps by one now gloating. Sarah picked up a torn photograph from the floor, showing Edmund with three people whose faces had been carefully removed. Outside, thunder rolled across the moors, and somewhere in the shadows of the house, a clock struck the half hour. Sarah knew one thing with absolute certainty: whoever had cut those faces out was still hiding somewhere within these walls.
created_at"2026-09-23T17:43:51.817Z" 9/23/2026, 5:43:51 PM
model"aion-labs/aion-3.5-20260923"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1420
moderation_latency(null)
generation_time81297
tokens_prompt46
tokens_completion3444
native_tokens_prompt39
native_tokens_completion4305
native_tokens_completion_images(null)
native_tokens_reasoning3094
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)
usage0.025947
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790185431-iNaXYN7FI7Ylcopffm2L"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790185431-OZmfqVHdYLg6htN527aG"
upstream_id"aad1f843a94d4a2796f06b6965fe3b2c"
provider_responses
0
endpoint_id"09b1fc56-3888-42bd-b7a0-926851c7f9d6"
id"aad1f843a94d4a2796f06b6965fe3b2c"
is_byokfalse
latency1420
model_permaslug"aion-labs/aion-3.5-20260923"
provider_name"AionLabs"
status200
total_cost0.025947
cache_discount(null)
upstream_inference_cost0
provider_name"AionLabs"
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
sentences12
wordCounts
020
120
220
320
420
520
620
720
820
920
1020
1120