Run: 2026-03-18-01KM07N331MWVRSSYP9SEAQ86T

Run Details

Duration:
1.3s
Cost:
$0.000625
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
91.36% 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 drummed softly against the mansion, muting distant, uneasy whispers. Inspector Vale arrived late, carrying suspicion like a second coat. Inside, candles flickered, exposing marble faces and trembling, polished silver. The host smiled too widely, though grief already hollowed his cheeks. Someone had screamed earlier, and nobody could agree where. A portrait had fallen, revealing a fresh stain beneath it. Vale noticed three clocks, each stopped at different times. The guests avoided mirrors, as if reflections might accuse them. Then the lights died, and a body hit the floor.
created_at"2026-03-18T10:25:24.593Z" 3/18/2026, 10:25:24 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency449
moderation_latency(null)
generation_time1183
tokens_prompt46
tokens_completion156
native_tokens_prompt41
native_tokens_completion132
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"
usage0.00062475
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_06bc48d9981c91950169ba7d94a5e08195bc7d8acd0b4105c8"
is_byokfalse
latency229
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-1773829524-VhWpcYOGpqpRXVj2gB6x"
upstream_id"resp_06bc48d9981c91950169ba7d94a5e08195bc7d8acd0b4105c8"
total_cost0.00062475
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
91.36% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
010
110
210
311
49
510
69
710
810