Run: 2026-02-16-01KHKA11MFR1QZFNQC561T9YMM

Run Details

Duration:
26.7s
Cost:
$0.004388
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
Rain stitched black seams across the town as Detective Marlowe stepped under the lamplight, observing the silent house beyond windows. A single porch light flickered then died, leaving only the crooked shadow where someone had once stood and rain whispered. Inside, the parlor smelled of lemon polish and spilled wine, the rug folded back like a mouth revealing secrets today. On the chaise, Ms. Ellery slumped with a letter opener buried between ribs, pale fingers relaxed as if forgiving still. No sign of forced entry, no footprints on wet porch boards; only an overturned chair and a scent of jasmine. Neighbors murmured behind curtains, confessing facts in whispers while Detective Marlowe catalogued contradictions like contraband in a ledger old notebook. He found a photograph face-down, two laughing figures, one circled in dry ink, a memory someone had wanted erased quietly. The clock on the mantel stopped at three-fourteen, its hands frozen like witnesses refusing to speak the night any truth.
created_at"2026-02-16T13:25:49.317493+00:00" 2/16/2026, 1:25:49 PM
model"openai/gpt-5-mini-2025-08-07"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3957
moderation_latency(null)
generation_time26051
tokens_prompt46
tokens_completion980
native_tokens_prompt41
native_tokens_completion2189
native_tokens_completion_images0
native_tokens_reasoning1920
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"
usage0.00438825
router(null)
provider_responses
0
id"resp_05aae0de5da405b80169931ac24a048194b6c96251c5c79f62"
status200
is_byokfalse
latency138
endpoint_id"c4f66d01-20b0-4c27-a225-438ea22fda43"
provider_name"OpenAI"
model_permaslug"openai/gpt-5-mini-2025-08-07"
api_type"completions"
id"gen-1771248322-NVpZ4QqRcnkwwoo57ZyU"
upstream_id"resp_05aae0de5da405b80169931ac24a048194b6c96251c5c79f62"
total_cost0.00438825
cache_discount(null)
upstream_inference_cost0
provider_name"OpenAI"

Evaluation details

Result Evaluator Details Meta Data
90.1633% Matches word count n/a
neededCleanfalse
sentences8
wordCounts
020
120
220
320
420
520
621
721