Run: 2026-02-25-01KJ94HMR3EF3AK96GEV2WVZY8

Run Details

Duration:
12.0s
Cost:
$0.006369
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
9.36% Matches word count (details)

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 old manor house loomed darkly against the stormy, oppressive, and truly unforgiving November night sky. Mortimer, the aged butler, shivered violently, gripping his silver tray with trembling, weak, and bony fingers. He had heard a faint, distressed sound coming from Lady Ashworth's bedchamber just moments before the silence. Custom dictated he ignore trivial noises, especially so late during the very chilling, lonely, and foreboding night. Yet, a cold, creeping premonition of immense dread compelled his frail, elderly legs ever closer now, toward the sound. The heavy, ornate door stood slightly ajar, revealing a narrow sliver of the dimly lit, opulent room within. A draft of icy, tomb-like air wafted outwards, carrying a faint, metallic, and truly unsettling, terrible odor. Mortimer swallowed hard, pushing the door open wider, his heart hammering wildly against his ribcage with immense force. Lady Ashworth lay sprawled across her expensive chaise lounge, her crimson silk robe now deeply stained and torn. Her wide, unseeing eyes stared blankly at the antique chandelier, a silent, horrifying testament to eternal surprise. A silver letter opener, usually resting on her writing desk, protruded grotesquely from her frail, unmoving chest. The pristine white rug beneath her had absorbed a widening, dark pool, starkly marring its former flawless beauty. A gasp escaped Mortimer's lips, a thin, reedy sound, barely audible in the mansion's suddenly suffocating stillness. This shocking discovery would certainly shatter the quiet life he had diligently maintained within this grand, old house. He stumbled backward, dropping the tray with a tremendous clatter, the sound deafening in the dreadful, silent chamber. His bony fingers instinctively fumbled for the wall-mounted bell cord, summoning help for his newly deceased mistress.
created_at"2026-02-25T00:52:52.106Z" 2/25/2026, 12:52:52 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1497
moderation_latency(null)
generation_time11942
tokens_prompt46
tokens_completion2117
native_tokens_prompt38
native_tokens_completion2543
native_tokens_completion_images0
native_tokens_reasoning2177
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"STOP"
usage0.0063689
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1497
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771980772-GvyXkHdLk1cnSPv3kik1"
upstream_id(null)
total_cost0.0063689
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
9.36% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
016
116
217
317
419
518
617
718
818
917
1017
1118
1217
1318
1418
1517