Run: 2026-02-16-01KHK95ZP0NKXMC5GEF1V3BRE2

Run Details

Duration:
32.5s
Cost:
$0.001180
Provider:
OpenAI

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 20 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The rain pattered on the manor roof as hairline thunder murmured, while the guest list whispered secrets through chandeliers tonight. In the library, the clock sighed, and a body lay beneath the map of forgotten routes while candles flickered softly. The detective arrived unseen, noting fingerprints in frost on the window and the silence between guests turning deliberate that night. A telegram lay crumpled by the door, counting favors owed and favors withheld, as motive long simmered patiently beneath silence. Outside, rain sketched beads on glass, outlining footprints circling the terrace and converging toward a single, unlit conservatory door tonight. I am a guest, they tell me nothing, yet every breath I draw seems to echo a hidden accusation tonight. The room narrowed, witnesses gathered, doors sealed, and the storm outside attempted to erase the truth with roaring pretensions tonight. Who killed, and why, when every alibi sounded rehearsed and every smile concealed a lie beneath polished surfaces tonight, perhaps?
created_at"2026-02-16T13:11:08.301546+00:00" 2/16/2026, 1:11:08 PM
model"openai/gpt-5-nano-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency6754
moderation_latency(null)
generation_time32316
tokens_prompt46
tokens_completion996
native_tokens_prompt41
native_tokens_completion2944
native_tokens_completion_images0
native_tokens_reasoning2688
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"
usage0.00117965
router(null)
provider_responses
0
id"resp_0175743e9a0a740b016993174b92748196afdbe1164b23956e"
status200
is_byokfalse
latency140
endpoint_id"50329d77-04e1-4979-a184-c33030289476"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-nano-2025-08-07"
api_type"completions"
id"gen-1771247435-sgvJu2ztznYA8QL4joBV"
upstream_id"resp_0175743e9a0a740b016993174b92748196afdbe1164b23956e"
total_cost0.00117965
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
100.0000% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
620
720