Run: 2026-02-16-01KHKAAZ2XDC95NSRAAZJV67YT

Run Details

Duration:
1m 6s
Cost:
$0.027911
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
The storm snuffed the lighthouse as midnight swallowed the bay. Detective Mara Quinn parked, headlights dying, and listened for sirens. Instead, gulls shrieked, frantic confetti above the blackened docks tonight. A single bulb trembled outside Herriman's Fish, casting jaundiced ellipses. Inside, the floor glittered with ice and broken glass everywhere. The smell mixed ocean brine, diesel, and something copper, sweet. Mara stepped carefully, boots whispering, her flashlight combing the crates. A knife stood upright in thawing salmon, humming with flies. Beyond the counter, a body leaned against scales, eyes absent. Snow gathered on his shoulders, although there was no snow. It drifted from the freezer, shimmering like ash in moonlight. Her radio crackled; dispatch mumbled static, then someone laughed softly. She muted it, throat dry, counting footprints in melting slush. Two entered, none left; the ledger confirmed midnight deliveries stopped. On the corpse's palm, sea salt traced letters, slowly dissolving. They spelled HARBOR, though the harbor roared outside without secrets. A footprint glittered, sparkling with glass, leading toward the office. Mara touched the doorknob and felt heat beneath frost there. The lock clicked open, though the keychain lay beside him. Inside the office, photographs waited, smiling through salted fingerprints everywhere. Rain began suddenly, marching sideways, erasing everything but blood trails. And somewhere outside, the lighthouse blinked awake, as witnesses gathered.
created_at"2026-02-16T13:31:53.705245+00:00" 2/16/2026, 1:31:53 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3902
moderation_latency(null)
generation_time65560
tokens_prompt46
tokens_completion1067
native_tokens_prompt41
native_tokens_completion2786
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"
usage0.02791125
router(null)
provider_responses
0
id"resp_057d73147c236c940169931c075b8c8190931b878e3799122f"
status200
is_byokfalse
latency162
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771248647-FNXeyrc0VIxtSEgtYDUO"
upstream_id"resp_057d73147c236c940169931c075b8c8190931b878e3799122f"
total_cost0.02791125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences22
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910
2010
2110