Run: 2026-03-18-01KM07M7WWBREK3EV9ZCYHBJES

Run Details

Duration:
1.1s
Cost:
$0.000535
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
Fog pressed against Blackthorn Manor as Inspector Vale arrived, noting the music had stopped abruptly, leaving only rain and silence. In the foyer, servants stood rigidly beneath chandeliers, while Lady Harrington clutched a letter opener, her knuckles white with terror. Then Vale saw Sir Julian lying beside the grand piano, one shoe missing, a crimson stain spreading across the marble. Nobody spoke when the widow whispered that the killer was still inside, and every locked door seemed to confirm it.
created_at"2026-03-18T10:24:56.748Z" 3/18/2026, 10:24:56 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency401
moderation_latency(null)
generation_time1052
tokens_prompt46
tokens_completion133
native_tokens_prompt41
native_tokens_completion112
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"
usage0.00053475
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_07e9f30dab6948430169ba7d78cf548194a8911b158c1a5386"
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-1773829496-szxbtSjxulboFNOJtceR"
upstream_id"resp_07e9f30dab6948430169ba7d78cf548194a8911b158c1a5386"
total_cost0.00053475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320