Run: 2026-09-23-01M36NP6QT2AWNEV4FW97TGKKZ

Run Details

Duration:
2.2s
Cost:
$0.000036
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
89.63% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
At midnight, the clock stopped above the ballroom doors. Then someone screamed, and every candle vanished at once. Detective Mara Venn found the host beneath the staircase, smiling. His blood spelled one name nobody dared speak aloud: hers. Outside, rain erased the footprints leading away from the house.
created_at"2026-09-23T08:21:35.106Z" 9/23/2026, 8:21:35 AM
model"openai/gpt-6-luna-20260922"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2069
moderation_latency(null)
generation_time2138
tokens_prompt46
tokens_completion78
native_tokens_prompt41
native_tokens_completion64
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"
usage0.0000361
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.20.0; linux; x64))"
http_referer(null)
request_id"req-1790151695-WOVjdx2TZNVMZL0diFSm"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1790151695-3hMz68dlhvFXbhId06LK"
upstream_id"resp_0839ad7eec031cf5016ab38c0f33b887d1a9c63a66f67318be"
provider_responses
0
endpoint_id"05e94e02-b9c2-4bbb-ba55-4082ee9ad687"
id"resp_0839ad7eec031cf5016ab38c0f33b887d1a9c63a66f67318be"
is_byokfalse
latency432
model_permaslug"openai/gpt-6-luna-20260922"
provider_name"OpenAI"
status200
total_cost0.0000361
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
89.63% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
09
19
210
310
410