Run: 2026-03-09-01KK9QNG8G77VEME4YTP1EVAPW

Run Details

Duration:
19.5s
Cost:
$0.018058
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
100.00% 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
Rain worried the mansion windows while Detective Mara Vale climbed the steps, summoned at dawn by voice trembling with terror. Inside, the chandeliers glowed weakly above servants huddled like mourners, each face pale enough to rival ancestral portraits lining walls. At the library threshold, she smelled cordite, roses, and seawater, then saw Lord Bellamy slumped across his mahogany desk alone. His signet ring gleamed beside an overturned glass, while the grandfather clock ticked on, indifferent as a patient executioner nearby. No blood marked the carpet, yet a single wet footprint led from the balcony, stopping precisely beneath Bellamy's cold hand. Mara removed her gloves, knowing the storm outside had already washed away answers and perhaps delivered the killer to her.
created_at"2026-03-09T16:42:43.354Z" 3/9/2026, 4:42:43 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency18013
moderation_latency(null)
generation_time19362
tokens_prompt46
tokens_completion202
native_tokens_prompt41
native_tokens_completion1197
native_tokens_completion_images0
native_tokens_reasoning1030
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.0180575
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_02ba8ce58f6d98040169aef883725881979946cc24ed0ad498"
is_byokfalse
latency210
model_permaslug"openai/gpt-5.4-20260305"
provider_name"OpenAI"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.0; linux; x64))"
http_referer(null)
api_type"completions"
id"gen-1773074563-3o4JpbvMJM0idfjgJenA"
upstream_id"resp_02ba8ce58f6d98040169aef883725881979946cc24ed0ad498"
total_cost0.0180575
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520