Run: 2026-09-23-01M36NQDY23P4VH6J1FWZSGABF

Run Details

Duration:
3.4s
Cost:
$0.000066
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
66.97% 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, Inspector Vale entered the library, where a shattered window framed the storm and the old clock had stopped. Lady Ashcombe lay beside the fireplace, one gloved hand clutching a silver key, while rain whispered against the curtains. Every guest remained upstairs, or so the butler insisted, though fresh footprints crossed the rug and vanished beneath the desk. Vale studied the untouched brandy, the overturned chessboard, and a single red thread caught on the victim’s wedding ring. Then the clock chimed thirteen, and someone locked the library door from the other side, trapping them together.
created_at"2026-09-23T08:22:15.242Z" 9/23/2026, 8:22:15 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1993
moderation_latency(null)
generation_time3326
tokens_prompt46
tokens_completion156
native_tokens_prompt41
native_tokens_completion123
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"
usage0.0000656
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151735-XWIMdQOnDvdyPPgkRPJ1"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151735-ki3XK5SQINTsDewcCO73"
upstream_id"resp_0c06a2f5bd030de1016ab38c375a0887d1806ef20908148b4c"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0c06a2f5bd030de1016ab38c375a0887d1806ef20908148b4c"
is_byokfalse
latency366
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000656
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
66.97% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
119
220
319
418