Run: 2026-03-18-01KM07HM5NHHN0MJXB6BX814ZK

Run Details

Duration:
11.0s
Cost:
$0.003451
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 stitched silver lines across Blackthorn Manor as Inspector Vale climbed the steps, summoned by a scream no one repeated. Inside, candlelight trembled over shattered glass, and the household stood frozen around the library door, each face carefully innocent tonight. Vale noticed the lock intact, the window latched, and a single crimson glove lying beside the body, still warm beneath. When the maƮtre d' whispered the victim's name, every guest turned toward the portrait above the mantel, ashen and silent. Inspector Vale smiled thinly, because the murderer had already made one mistake, and the storm outside would soon confess everything.
created_at"2026-03-18T10:23:31.008Z" 3/18/2026, 10:23:31 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency10528
moderation_latency(null)
generation_time10615
tokens_prompt46
tokens_completion631
native_tokens_prompt41
native_tokens_completion760
native_tokens_completion_images0
native_tokens_reasoning630
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"
usage0.00345075
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_02aebd64d9bcdcf90169ba7d230f988190bf8b6dc32375cab4"
is_byokfalse
latency244
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-1773829411-cmlEc4i2wQUw1aIFzs6q"
upstream_id"resp_02aebd64d9bcdcf90169ba7d230f988190bf8b6dc32375cab4"
total_cost0.00345075
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420