Run: 2026-03-18-01KM08Q344RV4MRN5QFK8CB5CX

Run Details

Duration:
966ms
Cost:
$0.000431
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
65.22% 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
Rain slicked the courthouse steps as midnight swallowed the town. Inside, Detective Mara Vale found the judge already dead. Blood pooled beneath the bench, dark as spilled ink. A single glove lay beside him, impossibly clean. Mara checked the doors; every lock remained untouched. Then the lights flickered, and footsteps echoed from upstairs. Someone was still here, watching her breathe in silence.
created_at"2026-03-18T10:43:58.739Z" 3/18/2026, 10:43:58 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency390
moderation_latency(null)
generation_time887
tokens_prompt46
tokens_completion108
native_tokens_prompt41
native_tokens_completion89
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)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"completed"
usage0.00043125
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_005a4d79846e0df90169ba81eecd188195807f2deb12c34637"
is_byokfalse
latency182
model_permaslug"openai/gpt-5.4-mini-20260317"
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-1773830638-kJleKkzq5Q16lMLMoZOg"
upstream_id"resp_005a4d79846e0df90169ba81eecd188195807f2deb12c34637"
total_cost0.00043125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
65.22% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
010
19
29
38
48
59
69