Run: 2026-03-09-01KK9PSKQA9HX3RCY6QVFP79MB

Run Details

Duration:
12.3s
Cost:
$0.011532
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 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain worried the windows while Blackthorn Manor held its breath. At midnight, the grandfather clock coughed once, then fell silent. Evelyn Price paused outside the library, hearing slippered footsteps retreat. When she entered, candlelight trembled across portraits and spilled brandy. Sir Adrian lay beneath the desk, his throat opened neatly. Beside his hand, a chess knight stared upward, crimson flecked. The French doors stood locked, their brass handles cold, immaculate. Only one thing moved: the curtains, breathing inward without wind. Evelyn rang the bell, and somewhere upstairs a woman screamed. By dawn, everyone would lie, and one liar would die.
created_at"2026-03-09T16:27:29.591Z" 3/9/2026, 4:27:29 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11713
moderation_latency(null)
generation_time11970
tokens_prompt46
tokens_completion481
native_tokens_prompt41
native_tokens_completion762
native_tokens_completion_images0
native_tokens_reasoning618
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"
usage0.0115325
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_062e202f4443a3030169aef4f1b9fc819787c87d33a76692e6"
is_byokfalse
latency181
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-1773073649-QmGqfLjMkCrO9AvKxwhP"
upstream_id"resp_062e202f4443a3030169aef4f1b9fc819787c87d33a76692e6"
total_cost0.0115325
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
110
210
310
410
510
610
710
810
910