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Run: 2026-09-23-01M36RFNNV6ZM9GQG5BN390WS2
Run Details
Model:
GPT-6 Luna (Reasoning, High)
Test:
N-Length Sentences
Scenario:
Write sentences with 10 words each
Duration:
14.3s
Cost:
$0.000711
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
At midnight, the observatory bell rang without anyone touching it. Inspector Vale arrived soaked, clutching the envelope nobody recognized yet. Inside, Professor Wren lay beside his shattered telescope, quite motionless. Blood stained the star charts, though none marked his hands. Someone erased each constellation from the observatory blackboard before dawn. Vale noticed one wet footprint leading toward the locked door. Then the envelope rustled, though its seal remained unbroken still. From inside, a woman's voice whispered, “You are already late.”
created_at
"2026-09-23T09:10:26.756Z"
9/23/2026, 9:10:26 AM
model
"openai/gpt-6-luna-20260922"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
11233
moderation_latency
(null)
generation_time
14268
tokens_prompt
46
tokens_completion
401
native_tokens_prompt
41
native_tokens_completion
1413
native_tokens_completion_images
0
native_tokens_reasoning
1302
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
0.0007106
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.21.0; linux; x64))"
http_referer
(null)
request_id
"req-1790154626-JccrpZHWHZFYUHFOe2vl"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790154626-u5HSr5TGA6xYmTKjeDLf"
upstream_id
"resp_04b310225a1706e2016ab39782dd8087d19792789763b6fd4b"
provider_responses
0
endpoint_id
"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id
"resp_04b310225a1706e2016ab39782dd8087d19792789763b6fd4b"
is_byok
false
latency
424
model_permaslug
"openai/gpt-6-luna-20260922"
provider_name
"OpenAI"
status
200
total_cost
0.0007106
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
8
wordCounts
0
10
1
10
2
10
3
10
4
10
5
10
6
10
7
10