Run: 2026-09-23-01M36P50MY7FJMVCAHM45FZG7H

Run Details

Duration:
6.0s
Cost:
$0.000072
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
92.13% 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
Detective Mara Venn arrived at Bellweather Manor just as midnight rain silvered the gravel drive and swallowed the distant road. Inside, every clock had stopped at eleven seventeen, and the guests stood beneath the staircase, whispering around their host’s body. Lord Ashcombe lay beside the unlit fireplace, one hand clenched around a playing card: the queen of hearts, carefully bloodied. Mara surveyed their pale faces, then noticed the servants’ entrance swinging gently open, though no footprints crossed the polished floor. “Someone here,” she said, “has already rehearsed a lie,” while thunder shook dust from the portrait above the mantelpiece.
created_at"2026-09-23T08:29:40.392Z" 9/23/2026, 8:29:40 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4383
moderation_latency(null)
generation_time5966
tokens_prompt46
tokens_completion172
native_tokens_prompt41
native_tokens_completion135
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"
usage0.0000716
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790152180-WyFLXGjqPnWEZJEFgWsc"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790152180-fU7FWbcXFlURkw2KrJKP"
upstream_id"resp_0943644b3010ec2e016ab38df4890087d1b5bf16ce335ca414"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0943644b3010ec2e016ab38df4890087d1b5bf16ce335ca414"
is_byokfalse
latency2998
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000716
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
92.13% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
419