NC Bench
Overview
About
Tests
Categories
Models
Vendors
Compare
Run: 2026-09-23-01M37PG4VMQS8VZW2NH9HY00GZ
Run Details
Model:
Aion 3.5 (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1m 2s
Cost:
$0.020945
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
Messages
Meta
AI
The cold rain hammered relentlessly against the tall windows of old Blackwood Manor as lightning split the darkened sky above. Inside the grand entrance hall, Margaret Ashworth lay completely motionless on the cold marble floor, her glassy eyes fixed upward. A silver letter opener protruded from her chest, its ornate handle gleaming beneath the flickering light of the overhead chandeliers. Detective Sarah Chen stepped carefully around the dead body, noting the strange absence of blood on the expensive Persian rug. The elderly housekeeper had discovered the corpse at midnight, screaming loudly enough to wake every single guest staying overnight upstairs. Six guests had gathered here for the lavish weekend dinner party, and now each one waited nervously in the library. Chen knew that one of them was certainly lying, and that the cold-blooded killer still remained somewhere inside the house. The ancient clock on the mantel struck one, and somewhere deep in the shadows, someone began quietly laughing to themselves.
created_at
"2026-09-23T17:54:59.588Z"
9/23/2026, 5:54:59 PM
model
"aion-labs/aion-3.5-20260923"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
404
moderation_latency
(null)
generation_time
62028
tokens_prompt
46
tokens_completion
2958
native_tokens_prompt
39
native_tokens_completion
3486
native_tokens_completion_images
(null)
native_tokens_reasoning
2700
native_tokens_cached
39
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
0.02094525
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790186099-2nNJVUFQcksdj9yFUHqT"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790186099-6c1a1OM7668zaesteQKP"
upstream_id
"3def5bff3a4e45b9bae5ee07e5c0857e"
provider_responses
0
endpoint_id
"09b1fc56-3888-42bd-b7a0-926851c7f9d6"
id
"3def5bff3a4e45b9bae5ee07e5c0857e"
is_byok
false
latency
404
model_permaslug
"aion-labs/aion-3.5-20260923"
provider_name
"AionLabs"
status
200
total_cost
0.02094525
cache_discount
0.00008775
upstream_inference_cost
0
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
neededClean
false
sentences
8
wordCounts
0
20
1
20
2
20
3
20
4
20
5
20
6
20
7
20