Run: 2026-02-16-01KHKB02FCX1XXYDX15WR66S7S

Run Details

Duration:
20.3s
Cost:
$0.016661
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 hammered the boardwalk as tourists scattered from thunder overhead. Detective Mara Quinn sheltered beneath the pier, watching the chaos. The carnival lights flickered, staining puddles with nervous, bleeding color. Somewhere beyond the Ferris wheel, a scream sliced the storm. Everyone nearby assumed another drunken fight, except the detective tonight. She knew panic's timbre, raw and rising, unmistakably different here. Mara moved toward the voice, shoes slipping on streaming planks. Beneath the rusted roller coaster, people formed a hesitant circle. At its center lay a man, face down, motionless there. Cheap carnival music warbled overhead, grotesquely cheerful funeral accompaniment tonight. Blood threaded between the boards, disappearing into the roaring ocean. A stuffed panda floated in it, soaking up darkness slowly. Mara knelt, fingers hovering above his neck, not touching yet. The crowd's chatter dimmed when they noticed her police badge. Lightning revealed his features: carnival manager Elias Kade, feared, charming. He was supposed to open tonight's fireworks, not headline morgues. Mara finally touched his skin; the warmth shocked her badly. Someone knelt opposite her, dripping seawater, eyes wide with terror. The woman whispered, trembling, barely audible above crashing waves everywhere. “I watched him drown on land, without any water today.”
created_at"2026-02-16T13:42:39.807581+00:00" 2/16/2026, 1:42:39 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency17789
moderation_latency(null)
generation_time20114
tokens_prompt46
tokens_completion370
native_tokens_prompt41
native_tokens_completion1661
native_tokens_completion_images0
native_tokens_reasoning1362
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"
usage0.01666125
router(null)
provider_responses
0
id"resp_065cba568449081a0169931ebaef88819396c16774fa1cf427"
status200
is_byokfalse
latency192
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771249338-wgdiqZTnQT6aLfevqIxP"
upstream_id"resp_065cba568449081a0169931ebaef88819396c16774fa1cf427"
total_cost0.01666125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences20
wordCounts
010
110
210
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510
1610
1710
1810
1910