Run: 2026-09-23-01M36P1Y9ZZVCTH75A2CZFJS17

Run Details

Duration:
3.2s
Cost:
$0.000054
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
58.71% 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

AI
At midnight, Detective Mara Venn found the mayor face-down beneath the ballroom chandelier, clutching a bloodstained invitation marked tomorrow. Rain battered the windows while guests stood frozen, their champagne glasses trembling in hands suddenly too innocent to trust. The orchestra’s final note faded as Mara noticed muddy footprints leading from the victim toward the locked, unbroken conservatory doors. “Whoever killed him is still inside,” she said, watching every guest carefully as the clock began striking thirteen.
created_at"2026-09-23T08:27:59.687Z" 9/23/2026, 8:27:59 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2374
moderation_latency(null)
generation_time3204
tokens_prompt46
tokens_completion137
native_tokens_prompt41
native_tokens_completion100
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.0000541
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790152079-cVkrHbDqjakvuBBsdus6"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790152079-Av2epp9LcIc3M3TNduXJ"
upstream_id"resp_0fea015f5e9367e2016ab38d8fca2487d1b7a8e49821d36b9d"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0fea015f5e9367e2016ab38d8fca2487d1b7a8e49821d36b9d"
is_byokfalse
latency868
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000541
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
58.71% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
019
119
220
318