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Run: 2026-09-23-01M36P0ECTK32QA5X68Q6PV68Z
Run Details
Model:
GPT-6 Luna
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.2s
Cost:
$0.000078
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
78.54%
Matches word count
(details)
Model input
User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.
Model response
Messages
Meta
AI
Rain veiled Blackthorn House that evening. Inspector Vale arrived before the storm. A lantern trembled beside the doorway. The butler opened it, pale-faced. “Someone’s dead upstairs,” he whispered. Vale entered, removing his soaked gloves. Thunder shook portraits along the staircase. At its landing, blood gleamed black. The study door stood partly open. Inside, Lord Blackthorn lay motionless. A silver knife rested nearby. The clock had stopped at midnight. “Who discovered him?” Vale asked quietly. The butler pointed toward the library. “His daughter,” he answered, trembling. Vale noticed mud beneath her window. Outside, fresh footprints vanished in rain. Then someone locked the front door.
created_at
"2026-09-23T08:27:10.625Z"
9/23/2026, 8:27:10 AM
model
"openai/gpt-6-luna-20260922"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
2183
moderation_latency
(null)
generation_time
3142
tokens_prompt
46
tokens_completion
185
native_tokens_prompt
41
native_tokens_completion
147
native_tokens_completion_images
0
native_tokens_reasoning
0
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
0.0000776
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790152030-dzC1VRqKirBjMiar0qk2"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790152030-8abbw9MUuZ0eGKtjXFCL"
upstream_id
"resp_02245121bf1771f9016ab38d5eb95087d18de1917522a16914"
provider_responses
0
endpoint_id
"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id
"resp_02245121bf1771f9016ab38d5eb95087d18de1917522a16914"
is_byok
false
latency
943
model_permaslug
"openai/gpt-6-luna-20260922"
provider_name
"OpenAI"
status
200
total_cost
0.0000776
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
78.54%
Matches word count
n/a
neededClean
false
sentences
16
wordCounts
0
6
1
6
2
6
3
5
4
5
5
6
6
6
7
6
8
6
9
5
10
5
11
6
12
17
13
6
14
6
15
6