Run: 2026-03-09-01KK9QQ8M3QZD286KXBPFTNWV6

Run Details

Duration:
28.4s
Cost:
$0.023848
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 windows of Blackthorn Hall as Inspector Vale arrived, coat dripping, and found the front door standing open. Inside, the grandfather clock struck midnight, each note lingering like a warning over marble floors and rows of extinguished candles. A woman in emerald silk lay beneath the staircase, one gloved hand outstretched toward a shattered porcelain music box nearby. No blood showed in the dimness, yet her throat bore a narrow bruise, neat as a ribbon's shadow at dawn. On the banister rested a single white rose, wet with rain although every window overlooking the terrace remained latched tight. From somewhere deeper within, a man laughed once, softly, then stopped, as if remembering the house was listening to him. Vale removed his hat, studied the dead woman's ringless fingers, and understood that everyone awake tonight had already lied once.
created_at"2026-03-09T16:43:41.069Z" 3/9/2026, 4:43:41 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency25167
moderation_latency(null)
generation_time28353
tokens_prompt46
tokens_completion229
native_tokens_prompt41
native_tokens_completion1583
native_tokens_completion_images0
native_tokens_reasoning1405
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"
usage0.0238475
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_08babf7fa75ae9530169aef8bd29fc8197857c5822baa57488"
is_byokfalse
latency172
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-1773074621-hU1OzD8xJDJIcQBpGROb"
upstream_id"resp_08babf7fa75ae9530169aef8bd29fc8197857c5822baa57488"
total_cost0.0238475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
020
120
220
320
420
520
620