Run: 2026-03-06-01KK1GVEVP9729N2RZMQZC0HFP

Run Details

Duration:
5.0s
Cost:
$0.002037
Provider:
OpenAI

Evaluation summary

Score Evaluator
Details Link
84.45% 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 glazed Blackthorn Manor as mourners gathered beneath iron skies. Inside, candles trembled, painting long shadows across ancestral portraits. Lady Wren greeted guests with smiles brittle as winter glass. At midnight, the clock groaned, and someone screamed upstairs suddenly. They found Lord Ashcombe sprawled beside shattered decanter shards there. Blood darkened the Persian rug like spilled sacramental wine. His signet ring was missing, though windows remained latched. No servant admitted hearing footsteps, yet mud marked corridors. Detective Hale arrived before dawn, carrying silence like judgment. He studied every face, and one face studied back.
created_at"2026-03-06T12:09:43.037Z" 3/6/2026, 12:09:43 PM
model"openai/gpt-5.4-20260305"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency451
moderation_latency(null)
generation_time4946
tokens_prompt46
tokens_completion172
native_tokens_prompt41
native_tokens_completion129
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"
usage0.0020375
router(null)
provider_responses
0
endpoint_id"9ff5625c-403f-4d7f-b895-58ac7295062c"
id"resp_0dc0665eb363fee40169aac40717cc8197aa6a22e086f43194"
is_byokfalse
latency186
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-1772798983-KjcAUOw2reJiONhyhY68"
upstream_id"resp_0dc0665eb363fee40169aac40717cc8197aa6a22e086f43194"
total_cost0.0020375
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
84.45% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
010
19
210
310
410
59
69
79
89
99