Run: 2026-02-19-01KHVP60DDKPJ9XMP3GQPC7K8T

Run Details

Duration:
1m 7s
Cost:
$0.064888
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
Rain pounded against the window of the mansion as Detective Vance stared at the lifeless body on the expensive rug. Blood stained the pristine white fabric of his silk shirt beneath the warm glow of a massive crystal chandelier above. A tall grandfather clock ticked softly in the silent room while three nervous suspects waited near the closed wooden doors. Lord Blackwood had been a cruel man during his long life, but nobody expected him to die like this tonight. The murder weapon was clearly missing from the crime scene, leaving the seasoned detective searching for a hidden secondary clue. Lightning flashed across the stormy sky outside, briefly illuminating the pale face of the beautiful widow standing by the fireplace. She held a delicate glass of red wine in her right hand with perfect grace despite the terribly chaotic situation. Vance observed her carefully before turning his sharp attention toward the locked door at the far end of the hallway. Someone locked that solid oak door from the inside before brutally stabbing the wealthy aristocrat right through his cold heart. Only three people possessed the missing brass key required to gain access into this strictly forbidden study during the storm.
created_at"2026-02-19T19:31:42.995Z" 2/19/2026, 7:31:42 PM
model"google/gemini-3.1-pro-preview-20260219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3623
moderation_latency(null)
generation_time66779
tokens_prompt46
tokens_completion1892
native_tokens_prompt38
native_tokens_completion5401
native_tokens_completion_images0
native_tokens_reasoning5184
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"
usage0.064888
router(null)
provider_responses
0
endpoint_id"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byokfalse
latency3623
model_permaslug"google/gemini-3.1-pro-preview-20260219"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771529503-KJCesQHBzszjR6n33UuR"
upstream_id(null)
total_cost0.064888
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