Run: 2026-02-16-01KHK9VEZRBSHFMAFSJKZAYSFZ

Run Details

Duration:
29.8s
Cost:
$0.016311
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 erased footprints along pier. Yellow tape fluttered, snapping warnings. Detective Mara Quinn studied everything. The body rocked with waves. Harbor lights painted bruises silver. Paramedics waited, already too late. Seagulls jeered above the sirens. Mara crouched beside the corpse. Male, thirties, dressed for celebration. Glitter clung to his knuckles. A party wristband encircled tightly. No wallet, no phone, nothing. His eyes stared past everything. Mara noted lividity, checked pulse. A jagged wound marred temple. Not from waves, she thought. Officer Diaz hovered behind her. He smelled of rain, diesel. Coasties found him near midnight. Floating face-down, wedged against pylons. Thought he was another drunk. Dock cameras were cut earlier. Mara's pen stopped mid-scribble suddenly. Cut by whom, and why? Diaz shifted, boots dripping seawater. He offered coffee, she refused. Her eyes mapped surrounding boats. Most cabins dark, curtains closed. Except one yacht glowing warmly. Music drifted, soft and wrong. Someone still celebrated the festival. Someone not asking about screams. Mara rose, raincoat whispering plastic. She told Diaz, 'Secure everything.' Then she walked toward yacht. Behind her, waves erased blood.
created_at"2026-02-16T13:22:49.486531+00:00" 2/16/2026, 1:22:49 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency27294
moderation_latency(null)
generation_time29687
tokens_prompt46
tokens_completion352
native_tokens_prompt41
native_tokens_completion1626
native_tokens_completion_images0
native_tokens_reasoning1312
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"
usage0.01631125
router(null)
provider_responses
0
id"resp_043c57e839f27e730169931a0b58c0819092ae6135eb1e145d"
status200
is_byokfalse
latency205
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771248139-OTx75AzXc3Pu9YqSkxCa"
upstream_id"resp_043c57e839f27e730169931a0b58c0819092ae6135eb1e145d"
total_cost0.01631125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
98.7711% 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
196
205
215
226
235
245
255
265
275
285
295
305
315
325
335
345
355