Run: 2026-03-18-01KM07KARYESQ3P5VQWGGKRMFD

Run Details

Duration:
13.9s
Cost:
$0.004436
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 silver threads across the manor windows as Inspector Vale arrived, carrying a lantern and the summons he dreaded. Inside, the ballroom glittered with abandoned champagne flutes, and the guests stood frozen around Lord Ashcroft's body beneath the chandelier. No one spoke when Vale noticed the bloodless smile, the missing watch, and the open French doors to the garden. A maid began to cry, then stopped abruptly, as if someone unseen had pressed a warning hand to her throat. Vale set his lantern beside the corpse and said, quietly, that the murderer was still in the house tonight, waiting.
created_at"2026-03-18T10:24:26.921Z" 3/18/2026, 10:24:26 AM
model"openai/gpt-5.4-mini-20260317"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency13427
moderation_latency(null)
generation_time13475
tokens_prompt46
tokens_completion798
native_tokens_prompt41
native_tokens_completion979
native_tokens_completion_images0
native_tokens_reasoning853
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"
usage0.00443625
router(null)
provider_responses
0
endpoint_id"9ee065b2-3d1c-43bc-bdd7-28af3b148282"
id"resp_0912133303323efa0169ba7d5af95c81908cab6b950e363cc5"
is_byokfalse
latency180
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-1773829466-zGe5WJc44CTBQZDyfN8j"
upstream_id"resp_0912133303323efa0169ba7d5af95c81908cab6b950e363cc5"
total_cost0.00443625
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