Run: 2026-02-16-01KHKA6SRHVEAJ2C1AG3W090TH

Run Details

Duration:
43.5s
Cost:
$0.027181
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain pinned shadows to cobblestones. The town clock chimed midnight. Detective Mora studied shuttered windows. A scream severed the silence. Footsteps scattered like startled pigeons. The gaslights trembled, eyes narrowed. She tasted copper and fog. An umbrella lay, ribs broken. Crimson threaded the gutter’s run. A glove pointed toward thirteen. Curtains twitched, then stilled flat. Mora knocked; the door sighed. Warmth fled the narrow hallway. Photographs watched from tilted frames. The parlor smelled of violets. A metronome ticked, unkindly patient. On velvet, a locket gleamed. Inside, hair coiled like questions. The grandfather clock swallowed time. Someone breathed beneath the stairs. Mora whispered, "Come out, please." A hinge wept, slow tears. The tenant emerged, shaking petals. Blood flecked her white slippers. "He promised," she said, trembling. Thunder interrupted further practiced denials. Mora lifted the hallway carpet. A blade clinked beneath boards. Embossing spelled a family name. Portrait eyes refused to blink. Secrets gathered like waiting crows. Outside, sirens braided with rain. Somewhere, a phone rang unanswered. The metronome finally stopped ticking. Silence stood, holding the knife.
created_at"2026-02-16T13:29:14.812295+00:00" 2/16/2026, 1:29:14 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4608
moderation_latency(null)
generation_time43332
tokens_prompt46
tokens_completion949
native_tokens_prompt41
native_tokens_completion2713
native_tokens_completion_images0
native_tokens_reasoning2432
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"
usage0.02718125
router(null)
provider_responses
0
id"resp_0e403a0b91c209e10169931b7ed18c819795ff137f7ed21453"
status200
is_byokfalse
latency155
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248510-8Okz5lmXBu9oL1BpfZ1L"
upstream_id"resp_0e403a0b91c209e10169931b7ed18c819795ff137f7ed21453"
total_cost0.02718125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences35
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145
155
165
175
185
195
205
215
225
235
245
255
265
275
285
295
305
315
325
335
345