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Run: 2026-09-23-01M36NW4G5KCJMCWRS2ZN406DH
Run Details
Model:
GPT-6 Luna (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
13.9s
Cost:
$0.000615
Provider:
OpenAI
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
The rain stopped just as Inspector Vale reached Blackthorn House. One upstairs window glowed, though the family claimed nobody remained. Inside, a grandfather clock ticked beside the untouched dinner plates. Then Vale noticed wet footprints crossing the carpet toward nowhere. At the staircase, Mrs. Wren held a bloodstained silver key. She whispered, “You’re early,” then vanished before he could answer. Vale followed, finding one door locked securely from the inside. Behind it, someone laughed once, then begged for silence again. Vale raised his old revolver; the downstairs clock suddenly stopped.
created_at
"2026-09-23T08:24:49.428Z"
9/23/2026, 8:24:49 AM
model
"openai/gpt-6-luna-20260922"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
5087
moderation_latency
(null)
generation_time
13845
tokens_prompt
46
tokens_completion
660
native_tokens_prompt
41
native_tokens_completion
1221
native_tokens_completion_images
0
native_tokens_reasoning
1089
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
"completed"
service_tier
"default"
usage
0.0006146
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790151889-bH67UBgBK0gsDAWA1Izp"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790151889-7Jwn5BtcYw6mxjDtJNB6"
upstream_id
"resp_07aec1907f6f2587016ab38cd1900c87d1a42ba43d1d749332"
provider_responses
0
endpoint_id
"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id
"resp_07aec1907f6f2587016ab38cd1900c87d1a42ba43d1d749332"
is_byok
false
latency
753
model_permaslug
"openai/gpt-6-luna-20260922"
provider_name
"OpenAI"
status
200
total_cost
0.0006146
cache_discount
(null)
upstream_inference_cost
0
provider_name
"OpenAI"
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
9
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10
8
10