Run: 2026-02-16-01KHK9ADACDAZXH5RT2GKSWQ0Y

Run Details

Duration:
1m 6s
Cost:
$0.042901
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 stitched darkness over Hawthorn. The mansion watched, windows unblinking. Detective Mara Quinn arrived late. Her coat dripped patient rivers. The butler's hands shook twice. He whispered, Master will not. Mara smelled copper, old wallpaper. A grandfather clock had stopped. Its hands severed at midnight. Footprints bloomed across Persian carpets. One set faced the door. Another vanished into lamplight silence. Thunder rehearsed excuses for screams. The library reeked of brandy. On velvet, a letter opener. Its tip wore choked crimson. No corpse, only practiced absence. Curtains breathed like guilty lungs. A portrait watched her accusations. It favored the missing heir. Mara cataloged everything, asked nothing. Silence filled in reluctant answers. She noticed damp ash prints. They circled the empty hearth. Wind bullied the back door. Its chain hung politely broken. An ambulance wailed without corpses. Neighbors gathered, clutching shared alibis. Someone wept, no tears came. Mara found the power switch. Light exposed a second message. Dust spelled help in footprints. Under it: three lonely matches. She pocketed two, left one. Upstairs, a hinge confessed softly. A shadow waited, breathing patience.
created_at"2026-02-16T13:14:06.931329+00:00" 2/16/2026, 1:14:06 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3668
moderation_latency(null)
generation_time65863
tokens_prompt46
tokens_completion1844
native_tokens_prompt41
native_tokens_completion4285
native_tokens_completion_images0
native_tokens_reasoning3968
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"
usage0.04290125
router(null)
provider_responses
0
id"resp_0c90989b7172b86501699317dca0e481969ac7e72b432063de"
status200
is_byokfalse
latency146
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771247580-8rqrJMgVwvjY5YNEAwJy"
upstream_id"resp_0c90989b7172b86501699317dca0e481969ac7e72b432063de"
total_cost0.04290125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences36
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
355