Run: 2026-02-25-01KJ95B3FAXEBDWRK7YXEYAV42

Run Details

Duration:
6.8s
Cost:
$0.003759
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
0.22% 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 grand ballroom lay eerily silent under the chandeliers' dim, dusty, forgotten, and ancient, peculiar glow. Detective Miles Corbin absolutely hated these incredibly rude, early morning calls disrupting his precious, peaceful slumber. A chill wind whipped around the ornate, sprawling mansion, rustling countless dead leaves across the stony path. Rain had just recently ceased, leaving glistening puddles to reflect the oppressive, grey, and unforgiving dawn sky. A uniformed officer, Sergeant Miller, stood waiting patiently by the massive, intricately carved oak front door. "Good morning, Detective," Miller offered, his voice a low, tired rumble, laced with palpable fatigue. Corbin merely nodded slowly, suppressing a yawn, already dreading the grim, unpleasant, tiresome tasks ahead. "It's upstairs," Miller continued, gesturing towards the grand, curving staircase looming in the massive, darkened foyer. Each heavy bootstep echoed ominously on the polished marble as they silently, slowly ascended the opulent steps. The lingering stench of stale perfume and something else, something metallic, grew stronger steadily now. They stopped before a bedroom door, slightly ajar, revealing faint, flickering yellow light from inside. Corbin pushed the ornate door fully open, his gaze sweeping across the opulent, silent room. An elderly woman lay sprawled grotesquely upon the plush, crimson carpet beside her expensive, antique bed. Her vacant eyes stared upward, reflecting nothing but the elegant ceiling's faded, ornate patterns. A silver letter opener, caked with drying crimson, protruded from her expensive, silk nightgown. Miles Corbin felt the familiar, cold knot tighten instantly in his weary, tired stomach.
created_at"2026-02-25T01:06:46.385Z" 2/25/2026, 1:06:46 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1135
moderation_latency(null)
generation_time6747
tokens_prompt46
tokens_completion1070
native_tokens_prompt38
native_tokens_completion1499
native_tokens_completion_images0
native_tokens_reasoning1172
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"
usage0.0037589
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1135
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771981606-By3jsp77zXwU9l8UGwWr"
upstream_id(null)
total_cost0.0037589
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
0.22% Matches word count n/a
neededCleanfalse
sentences16
wordCounts
016
116
217
317
416
515
615
716
817
915
1015
1115
1216
1314
1414
1514