Run: 2026-02-19-01KHVPCFCBGD8NMRXE33E4M9VM

Run Details

Duration:
53.9s
Cost:
$0.056116
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
100.00% 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
Heavy rain relentlessly hammered against the shattered stained glass window of the remarkably opulent and dimly lit Victorian manor library. Lord Harrington lay completely motionless upon his priceless Persian rug, a crimson pool spreading slowly across the intricate woven patterns. Inspector Vance carefully stepped into the freezing room while adjusting his soaked trench coat over his broad and weary shoulders. A silver candlestick covered in fresh blood rested just a few inches away from the brutally crushed and battered skull. Lightning flashed suddenly across the dark sky, casting long and terrifying shadows over the deeply unsettling and ghastly crime scene. Someone had decisively stopped the grandfather clock at precisely midnight, leaving an eerie silence hanging heavily within the vast space. The heavy oak door squeaked open behind him as a terrified maid stood trembling violently while gripping an empty tray. Vance sighed quietly beneath his breath because he realized this particular murder would become his most difficult unsolved mystery yet. Looking closely at the cold victim, he noticed a strange green feather clutched tightly within the stiff, pale left hand. The true killer was undeniably still hiding somewhere inside this incredibly massive and entirely isolated old estate tonight, waiting patiently.
created_at"2026-02-19T19:35:14.921Z" 2/19/2026, 7:35:14 PM
model"google/gemini-3.1-pro-preview-20260219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3534
moderation_latency(null)
generation_time53771
tokens_prompt46
tokens_completion1510
native_tokens_prompt38
native_tokens_completion4670
native_tokens_completion_images0
native_tokens_reasoning4450
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"
usage0.056116
router(null)
provider_responses
0
endpoint_id"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byokfalse
latency3534
model_permaslug"google/gemini-3.1-pro-preview-20260219"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771529714-iJjWD3bMwzB0wQg7TMok"
upstream_id(null)
total_cost0.056116
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
020
120
220
320
420
520
620
720
820
920