Run: 2026-02-16-01KHK9KJ4YKZP1WGM91YA4SMNC

Run Details

Duration:
27.4s
Cost:
$0.018651
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 glass as Detective Mara Quinn approached Whitfield. The mansion loomed ahead, windows black, driveway slick with secrets. Inside, the lights flickered like nervous witnesses awaiting cross-examination tonight. A butler opened cautiously, studying Mara's badge with open suspicion. Behind him, voices trembled, clustered around the grand piano's shadow. The call had mentioned screams, then silence, then rushing water. Water still dripped somewhere, irregular as a frightened heartbeat nearby. Mara stepped inside, cataloging expensive art and poorly hidden fear. A shattered champagne flute glittered beneath the chandelier like starlight. Blood marred the ivory keys, drying in hesitant, uneven streaks. On the loveseat, four guests waited, arranged like mismatched portraits. Their clothes whispered money; their eyes screamed something harder, dangerous. Mara noted who stared at the keys, who deliberately didn't. In the adjoining conservatory, paramedics hovered around an unseen body. A woman's laughter echoed faintly, recorded on someone's forgotten phone. Mara exhaled slowly, tasting copper, perfume, and the inevitable tonight.
created_at"2026-02-16T13:18:28.437225+00:00" 2/16/2026, 1:18:28 PM
model"openai/gpt-5.1-20251113"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency25657
moderation_latency(null)
generation_time27176
tokens_prompt46
tokens_completion308
native_tokens_prompt41
native_tokens_completion1860
native_tokens_completion_images0
native_tokens_reasoning1616
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"
usage0.01865125
router(null)
provider_responses
0
id"resp_0b4b6b1445239a2d0169931908775881978beed4cd12e6237d"
status200
is_byokfalse
latency174
endpoint_id"764eb97f-8bab-4326-b29b-7a8799b00a70"
provider_name"OpenAI"
model_permaslug"openai/gpt-5.1-20251113"
api_type"completions"
id"gen-1771247880-So4QdkBnrVHhX4I0uEHJ"
upstream_id"resp_0b4b6b1445239a2d0169931908775881978beed4cd12e6237d"
total_cost0.01865125
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
98.3801% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
010
110
211
310
410
510
610
710
810
910
1010
1110
1210
1310
1410
1510