Run: 2026-02-16-01KHKAMWBZ0PCFSTFD9046FTFJ

Run Details

Duration:
1m 48s
Cost:
$0.070021
Provider:
OpenAI

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 slicked the pier as midnight swallowed the sleeping harbor. Detective Mara Quinn arrived, coffee trembling inside a paper cup. Blue lights jittered across wet boards, summoning gulls from shadows. The call had mentioned screams, then only waves and silence. Now an overturned skiff rocked, knocking rhythms against the pilings. A single red scarf drifted, snagging on a rusted cleat. Mara crouched, reading the pier like a book left open. Footprints scalloped the puddles, smudged by haste and returning spray. One set ended abruptly where splinters smiled from a break. She peered into black water, which kept its moonlit secrets. Sergeant Ives arrived late, boots squeaking like startled rats below. He muttered apologies, then noticed the scarf and swallowed hard. That belonged to Lila Bray, the harbor master's missing niece. Mara pocketed the scarf, careful not to wring evidence away. Behind them, shutters clicked, curious windows practicing their alibis early. A gull shrieked twice, echoing something human, then nothing else. Ives said, Coast Guard found her car, engine still warm. Mara exhaled, tasting salt, diesel, and somebody else's fear tonight. She radioed dispatch, voice steady, questions clicking like handcuffs shut. Before help arrived, a bottle rolled, releasing sweet chemical breath. Mara followed it, finding footprints newer than the falling rain. They led beneath the pier, where dark water spoke louder. A whisper answered, metallic, ticking softly inside the tide below. Bomb? Ives mouthed, but Mara shook no, then froze listening. Something scraped barnacles, deliberate as a match struck underwater there. A face surfaced briefly, pale as bait, eyes unblinking wide. It vanished, leaving ripples that counted down in rings slowly. Mara drew her light, revealing crimson staining the pylons nearby. Not blood, Ives said, but paint marking someone else's course. Mara smiled thinly; killers loved breadcrumbs that led backward first. She traced drips inland, toward warehouses sleeping with secrets inside. The third door yawned, padlock snapped, darkness breathing receipts cold. Inside, a desk lamp painted islands on scattered invoices there. On the floor, wet footprints dried toward a locker near. She opened it, finding rope, hooks, and a ledger waiting. The ledger bled numbers that stank worse than the harbor. Ives flipped pages, frowning at names circled in red ink. Lila's name starred twice, beside dates with no shipments logged. Thunder rolled close, as if clapping for the plot unfolding. Mara pocketed the ledger and heard footsteps behind crates nearby. She signaled Ives; lights died, warehouse swallowing their shapes whole. A voice whispered, too cheerful, asking about the weather outside. Mara replied, It rains when debts come due, friend always. The voice laughed, then cocked a gun against darkness near. Ives cursed softly; Mara counted heartbeats to three before moving. On four, lightning flashed, and someone else dropped screaming hard. When lights returned, the gun lay warm, owner absent again. In the doorway, rain framed Lila Bray, very still there. Her eyes begged mercy; her chest withheld any answering rise. Mara stepped forward, tasting copper, realizing the night had started.
created_at"2026-02-16T13:38:00.691369+00:00" 2/16/2026, 1:38:00 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency11178
moderation_latency(null)
generation_time107649
tokens_prompt46
tokens_completion1514
native_tokens_prompt41
native_tokens_completion6997
native_tokens_completion_images0
native_tokens_reasoning6272
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"
usage0.07002125
router(null)
provider_responses
0
id"resp_062a6f3d61b142e40169931d4c3ff481968e0fc40b881429ed"
status200
is_byokfalse
latency178
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248972-ahD3hqOomgBN0QmD4GFu"
upstream_id"resp_062a6f3d61b142e40169931d4c3ff481968e0fc40b881429ed"
total_cost0.07002125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
97.5310% Matches word count n/a
neededCleanfalse
sentences51
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910
2010
2110
2210
231
249
2510
2610
2710
2810
2910
3010
3110
3210
3310
3410
3510
3610
3710
3810
3910
4010
4110
4210
4310
4410
4510
4610
4710
4810
4910
5010