Run: 2026-03-18-01KM08ESTJMK716J16MMD7PB5A

Run Details

Duration:
6.7s
Cost:
$0.002456
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 polished the manor's windows as Eleanor arrived, clutching the letter that had summoned her to Blackthorn House at midnight. Inside, candles trembled along the corridor, and the servants stood silent, their eyes lowered, as if expecting someone already dead. At the stair's base, Sir Malcolm lay sprawled beneath the shattered clock, his gloved hand still gripping a silver key. Eleanor heard the house breathe around her, and when the front door slammed, she realized the killer had just returned.
created_at"2026-03-18T10:39:27.071Z" 3/18/2026, 10:39:27 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6209
moderation_latency(null)
generation_time6362
tokens_prompt46
tokens_completion399
native_tokens_prompt41
native_tokens_completion539
native_tokens_completion_images0
native_tokens_reasoning432
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"
usage0.00245625
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0d332ca07ea4484c0169ba80df21148190849433b9fef3024f"
is_byokfalse
latency205
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-1773830367-yAfzhLYxiT7LUVK0Abeq"
upstream_id"resp_0d332ca07ea4484c0169ba80df21148190849433b9fef3024f"
total_cost0.00245625
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