Run: 2026-09-23-01M36P1V1P53F3AGTGW48CTJZA

Run Details

Model:
GPT-6 Luna (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
7.3s
Cost:
$0.000300
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, the clock stopped. Someone screamed inside the library. Inspector Vale arrived before dawn. The front door stood open. Lord Ashcombe lay beside it. His teacup remained strangely warm. But every window was locked. One footprint crossed the carpet. It ended beneath Vale’s chair. Nobody had entered the room. Yet somebody was still breathing.
created_at"2026-09-23T08:27:56.348Z" 9/23/2026, 8:27:56 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3910
moderation_latency(null)
generation_time7277
tokens_prompt46
tokens_completion510
native_tokens_prompt41
native_tokens_completion592
native_tokens_completion_images0
native_tokens_reasoning505
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
service_tier"default"
usage0.0003001
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790152076-spxSWttPrUP9sanJckzx"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790152076-YMmJnxTmTFbQd39zo8qi"
upstream_id"resp_05ded0c9559b937e016ab38d8c6d5c87d1abd4e2349a589a56"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_05ded0c9559b937e016ab38d8c6d5c87d1abd4e2349a589a56"
is_byokfalse
latency702
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0003001
cache_discount(null)
upstream_inference_cost0
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
neededCleanfalse
sentences11
wordCounts
05
15
25
35
45
55
65
75
85
95
105