Run: 2026-02-25-01KJ95ENMN3PS28EEQFKQJKYJ8

Run Details

Duration:
7.4s
Cost:
$0.003899
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
74.96% 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 house stood silent, cloaked in heavy fog. Rain beat hard against the grimy windowpanes outside. Detective Inspector Thorne shivered, clutching his worn trench coat. His breath plumed white in the mansion's chill air. A cryptic phone call summoned him here past midnight. The grand oak door creaked open, revealing dusty gloom. Footsteps echoed hollowly on the polished marble floor inside. He followed the faint scent of copper and decay. A crystal chandelier glittered dimly above a slumped figure. Lady Beatrice Sterling lay sprawled, face frozen stark. A single crimson stain bloomed brightly on her silk dress. Her vacant eyes stared up at the frescoed ceiling. Thorne knelt carefully, checking for any signs of life. He felt nothing but cold stiffness beneath his gloved hand. Her sapphire necklace was missing from her pale, thin neck. This was no accident; someone had paid a deadly visit. Forensics would arrive soon, but clues seemed painfully scarce. The killer had vanished into the oppressive, dark night.
created_at"2026-02-25T01:08:43.291Z" 2/25/2026, 1:08:43 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1298
moderation_latency(null)
generation_time7354
tokens_prompt46
tokens_completion1045
native_tokens_prompt38
native_tokens_completion1555
native_tokens_completion_images0
native_tokens_reasoning1353
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"
usage0.0038989
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1298
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771981723-pJ3QVUasQezJsHEFolld"
upstream_id(null)
total_cost0.0038989
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
74.96% Matches word count n/a
neededCleanfalse
sentences18
wordCounts
09
18
29
39
49
59
69
79
89
98
1010
119
129
1310
1410
1510
169
179