Run: 2026-03-09-01KKAC245F86H7RWJ6CXATBVH5

Run Details

Duration:
13.2s
Cost:
$0.013452
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 battered Blackthorn Hall as Inspector Vale arrived, boots sinking into gravel, summoned before dawn by a trembling, incoherent servant. Inside, every clock had stopped at 3:17, and the candlelit foyer smelled of lilacs, gunpowder, and something metallic lingering nearby. Lady Ormond lay beneath the grand staircase, pearls scattered like teeth, one white hand closed around a bloodstained chess knight. Her husband watched from the landing, expressionless in his dressing gown, while three dinner guests stood below, shivering silently together. No window was broken, no silver missing, yet muddy footprints crossed the marble and ended abruptly before the library doors. Vale removed his gloves, surveyed the household, and understood at once that everyone present was rehearsing the same lie already.
created_at"2026-03-09T22:39:08.473Z" 3/9/2026, 10:39:08 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11948
moderation_latency(null)
generation_time13063
tokens_prompt46
tokens_completion371
native_tokens_prompt41
native_tokens_completion890
native_tokens_completion_images0
native_tokens_reasoning722
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"
usage0.0134525
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0695871f40c67bfa0169af4c0c8c4c8197a40b9b280ebedcfe"
is_byokfalse
latency178
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-1773095948-5obhBiikYwfiLqEOtW3y"
upstream_id"resp_0695871f40c67bfa0169af4c0c8c4c8197a40b9b280ebedcfe"
total_cost0.0134525
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520