Run: 2026-03-09-01KKABXWAPSXMPT4PMPS1K9ZVE

Run Details

Duration:
8.5s
Cost:
$0.008443
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 polished the mansion windows while midnight swallowed the grounds. Inside, guests laughed too loudly, hiding nerves behind crystal glasses. Lady Harroway announced dessert, then vanished before the candles guttered. A scream followed, sharp enough to silence every ticking clock. We found her sprawled beside the library's unlatched secret door. Blood darkened the Persian rug like spilled wine nobody wanted. On the mantel, nine silver figurines stood; one lay missing. Detective Vale removed his gloves and smiled without comfort whatsoever. Someone here knew the house intimately, and death entered invited. Outside, thunder answered him, as if the killer agreed completely.
created_at"2026-03-09T22:36:49.376Z" 3/9/2026, 10:36:49 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7449
moderation_latency(null)
generation_time8342
tokens_prompt46
tokens_completion178
native_tokens_prompt41
native_tokens_completion556
native_tokens_completion_images0
native_tokens_reasoning421
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"
usage0.0084425
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_027162fb73cf10af0169af4b8176b881948c511327c07a7d23"
is_byokfalse
latency303
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-1773095809-HJAM3otiK3vWhGwk1a4K"
upstream_id"resp_027162fb73cf10af0169af4b8176b881948c511327c07a7d23"
total_cost0.0084425
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