Run: 2026-03-18-01KM09KTHRSCAWNV2822QGNNCK

Run Details

Duration:
8.1s
Cost:
$0.005048
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 stitched the manor windows shut, while Detective Mara Vale arrived, her headlights smearing gold across the gravel drive below. Inside, the guests stood frozen beneath the chandelier, pretending not to notice the body sprawled beside the grand piano there. A crystal decanter lay shattered nearby, and in its spilled wine, Mara spotted a single cufflink stamped with unfamiliar initials. The widow wept too loudly, the butler watched too quietly, and every portrait seemed to lean closer in accusation tonight. Mara removed her gloves, glanced at the storm-dark garden, and understood someone in this house had killed once already here.
created_at"2026-03-18T10:59:40.227Z" 3/18/2026, 10:59:40 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency7854
moderation_latency(null)
generation_time7951
tokens_prompt46
tokens_completion461
native_tokens_prompt41
native_tokens_completion1115
native_tokens_completion_images0
native_tokens_reasoning986
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"
usage0.00504825
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_04d875af74fc88c10169ba859c4d288197a0efc56b06d7a723"
is_byokfalse
latency185
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-1773831580-CD6syyvtRha6XXWiz8Fy"
upstream_id"resp_04d875af74fc88c10169ba859c4d288197a0efc56b06d7a723"
total_cost0.00504825
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420