Run: 2026-02-25-01KJ958SDREQ4KS1D6SGEZMBPZ

Run Details

Duration:
7.0s
Cost:
$0.003284
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
86.28% Matches word count (details)

Model input

User/Human
Please write the opening scene of a murder mystery where each sentence has exactly 10 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
The old mansion loomed, silent against the winter night sky. Detective Miles stood outside, his breath pluming in the cold air. A frantic call reported something terribly wrong within the dark walls. He pushed open the heavy oak door; it groaned low. Darkness enveloped the grand foyer, thick and deeply disquieting. Dust motes danced in the lone beam of his powerful flashlight. A faint, metallic scent pricked at the detective's keen nostrils. He followed the smell, ascending the wide, creaking marble staircase. Each step echoed loudly, amplifying the mansion's oppressive stillness. The scent grew stronger, leading him to a gilded bedroom door. Hesitantly, Miles turned the cold brass knob, then pushed it. Crimson liquid stained the plush carpet, spreading slowly outward there. Sir Reginald Blackwood lay sprawled, his eyes staring blankly upward. A silver letter opener was plunged deep into his still chest. Blood crusted around the hilt, a gruesome, horrifying, silent testament. The room held a chill beyond the winter night's cold touch. Miles’ gloved hand reached slowly for his radio microphone.
created_at"2026-02-25T01:05:30.557Z" 2/25/2026, 1:05:30 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2427
moderation_latency(null)
generation_time7007
tokens_prompt46
tokens_completion800
native_tokens_prompt38
native_tokens_completion1309
native_tokens_completion_images0
native_tokens_reasoning1086
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"
usage0.0032839
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency2427
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771981530-JgCvDR6q30301jaqYA2O"
upstream_id(null)
total_cost0.0032839
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
86.28% Matches word count n/a
neededCleanfalse
sentences17
wordCounts
010
111
211
310
49
511
610
710
89
911
1010
1110
1210
1311
1410
1511
169