Run: 2026-09-23-01M36NH8S622TVMPK0CPYVKCSC

Run Details

Model:
GPT-6 Luna (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
6.7s
Cost:
$0.000235
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 bell stopped. Inspector Vale entered through rain. Nobody spoke beside the body. Lady Harrow held a candle. Her hands were perfectly dry. That was when Vale noticed. The dead man wore gloves. One glove was missing entirely. Outside, footsteps crossed fresh snow. But no footprints led inward. Vale smiled without explaining why.
created_at"2026-09-23T08:18:53.36Z" 9/23/2026, 8:18:53 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6370
moderation_latency(null)
generation_time6688
tokens_prompt46
tokens_completion89
native_tokens_prompt41
native_tokens_completion461
native_tokens_completion_images0
native_tokens_reasoning386
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"
usage0.0002346
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151533-3ZOOKsbDu9COf7kNMvBY"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151533-Zt6OSibpl32KTcuTgIaW"
upstream_id"resp_0e1e13c95a531ea1016ab38b6d8c9c87d1891356690dae38e6"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0e1e13c95a531ea1016ab38b6d8c9c87d1891356690dae38e6"
is_byokfalse
latency442
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0002346
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