Run: 2026-02-16-01KHKAXEFQP1S6HMWG7XA9CFF4

Run Details

Duration:
28.3s
Cost:
$0.017391
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 braided the streetlights as midnight bled into restless cobblestones. Detective Mara Quinn arrived, umbrella useless against the sideways storm. Sirens dwindled behind her, leaving footsteps like questions on stone. The mansion crouched ahead, windows blinking, a sullen animal watching. Inside, a chandelier trembled, whispering crystal prayers to nobody tonight. Butler Cormac waited stiffly, lapel blooming a brownish rainflower stain. He bowed, voice raw: the countess fell, and wouldn't wake. Mara followed echoes to the parlor, air sugared with lilacs. There, the countess reclined crookedly, champagne flutes surrounding like sentries. Her pearl necklace snapped, beads spelling panic across the carpet. A window gaped open; curtains clawed, desperate hands without bodies. Thunder applauded murder while a grandfather clock counted the alibi. Mara knelt, tasting copper air, inspecting lipstick on shattered flute. It smeared clockwise, not from sipping, but careful, guiding pressure. Cormac hovered, as lightning mapped his face with confession lines. She asked for matches; he produced three, but carried four. The fourth lay missing, exactly like the countess's purple pulse. Rain hissed harder, as candles shortened, like secrets losing patience. Somewhere upstairs, water ran, though nobody admitted bathing recently tonight. Mara pocketed a bead, and the room exhaled, listening closely.
created_at"2026-02-16T13:41:21.426278+00:00" 2/16/2026, 1:41:21 PM
model"openai/gpt-5-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency4493
moderation_latency(null)
generation_time27945
tokens_prompt46
tokens_completion1198
native_tokens_prompt41
native_tokens_completion1734
native_tokens_completion_images0
native_tokens_reasoning1408
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"
usage0.01739125
router(null)
provider_responses
0
id"resp_05f85425fdb4acc80169931e64f5948193800dec733b7b82ca"
status200
is_byokfalse
latency160
endpoint_id"7c2f859a-7890-4e8e-b1de-1cd1c0a800b4"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-2025-08-07"
api_type"completions"
id"gen-1771249252-61HIu6Vyd68BOivdRjTo"
upstream_id"resp_05f85425fdb4acc80169931e64f5948193800dec733b7b82ca"
total_cost0.01739125
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