Run: 2026-02-16-01KHKA10DFKP05DWPERYBCSM6W

Run Details

Duration:
1m 21s
Cost:
$0.030571
Provider:
OpenAI

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 hammered the iron rooftops while the town clock tolled midnight, swallowing footsteps echoing along the abandoned quay inwardly cold. Detective Mara Quin stepped from the ferry, coat heavy with brine, notebook ready, doubts prowling like patient strays around her. Harbor lamps shivered in the wind, scattering gold shards across puddles that mirrored broken windows and darker, watchful corners everywhere. The call had promised routine, yet the constable's voice carried sandpaper edges, hiding something uglier than simple trouble that night. Inside Warehouse Nine, ropes dangled like dead vines, and gulls quarrelled above rafters crusted with salt, feathers, and suspicion everywhere. The body waited among overturned crates, face veiled by netting, fingers stained sapphire, as if grasping night and drowning slowly. A lantern bobbed near the pier doors, revealing constable Hale, hat crushed, eyes refusing to meet Mara's steady gaze directly. He muttered about accidents and fishhooks, but his trembling thumbs counted, miscounted, then hid, rehearsing guilt without confession for hours. Mara peeled the net aside, and the mouth seemed to whisper seawater, delivering silence that foamed against unspoken names ashore. Beneath the jawline, a narrow puncture bled rust, not crimson, ringed with powdery glitter that clung like treacherous frost everywhere. She lifted a small enamel token from the victim's palm, a lighthouse emblem scratched by careful, furious strokes last night. Outside, the ferry moaned again, and distant laughter skittered across water, bright as glass, already beginning to fracture into shards.
created_at"2026-02-16T13:26:42.57882+00:00" 2/16/2026, 1:26:42 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency57878
moderation_latency(null)
generation_time80840
tokens_prompt46
tokens_completion1079
native_tokens_prompt41
native_tokens_completion3052
native_tokens_completion_images0
native_tokens_reasoning2688
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"
usage0.03057125
router(null)
provider_responses
0
id"resp_059147352f389b000169931ac10e948195872de58e272ea109"
status200
is_byokfalse
latency185
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248320-v1Oq76K8r7KKaBxP4FCu"
upstream_id"resp_059147352f389b000169931ac10e948195872de58e272ea109"
total_cost0.03057125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
020
120
220
320
420
520
620
720
820
920
1020
1120