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Run: 2026-09-23-01M36NH1E4HAEMN7B1N6ZQFAZW
Run Details
Model:
GPT-6 Luna
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
3.1s
Cost:
$0.000062
Provider:
OpenAI
Evaluation summary
Score
Evaluator
Details Link
49.67%
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
At midnight, the station clock stopped, though every witness swore its hands had moved backward since the storm began. Inspector Vale found the locked office empty, except for one wet footprint crossing the carpet toward the sealed window. On the desk, beneath a dying lamp, lay the mayor’s silver watch, ticking steadily beside a glass of untouched wine. Vale lifted the watch and heard something rattling inside its case, then noticed fresh blood darkening his fingertips. Behind him, someone whispered his name, though the doorway remained empty and the corridor outside stretched into darkness.
created_at
"2026-09-23T08:18:46.025Z"
9/23/2026, 8:18:46 AM
model
"openai/gpt-6-luna-20260922"
app_id
182717
external_user
(null)
streamed
true
cancelled
false
latency
1956
moderation_latency
(null)
generation_time
2801
tokens_prompt
46
tokens_completion
152
native_tokens_prompt
41
native_tokens_completion
116
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
0.0000621
router
(null)
user_agent
"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer
(null)
request_id
"req-1790151526-CQR1DBWL0sfLlNV4QqZn"
session_id
(null)
preset_id
(null)
api_type
"completions"
id
"gen-1790151526-UmHIQWZvgT7awxfMnyOY"
upstream_id
"resp_0268533c4d2d064f016ab38b66592487d1ade2818132d92177"
provider_responses
0
endpoint_id
"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id
"resp_0268533c4d2d064f016ab38b66592487d1ade2818132d92177"
is_byok
false
latency
630
model_permaslug
"openai/gpt-6-luna-20260922"
provider_name
"OpenAI"
status
200
total_cost
0.0000621
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
49.67%
Matches word count
n/a
neededClean
false
sentences
5
wordCounts
0
19
1
19
2
20
3
18
4
18