Run: 2026-09-23-01M36NJ8R032W5V04QKCGQHPFV

Run Details

Duration:
2.4s
Cost:
$0.000061
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
17.77% 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 House as rain silvered the windows and thunder shook dust from the ceiling. Inside, the clock had stopped at midnight, though every witness insisted the murder happened just minutes earlier. Lord Ashcombe lay beneath the staircase, one hand gripping a bloodstained playing card nobody recognized. Mara studied the silent guests, noticing one empty chair, one missing glass, and one door locked from within. Then the dead man’s pocket watch began ticking, although its shattered face contained no hands, only Mara’s initials.
created_at"2026-09-23T08:19:26.089Z" 9/23/2026, 8:19:26 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1455
moderation_latency(null)
generation_time2353
tokens_prompt46
tokens_completion147
native_tokens_prompt41
native_tokens_completion114
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"
usage0.0000611
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151566-HkKM4snk35JUTLYK37OO"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151566-G2dWqZMTtOp6Gpf72fpr"
upstream_id"resp_02555a27b1151d31016ab38b8e328487d181ef6c220fcb6f2d"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_02555a27b1151d31016ab38b8e328487d181ef6c220fcb6f2d"
is_byokfalse
latency313
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000611
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
17.77% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
019
117
215
318
418