Run: 2026-02-25-01KJ94JF07E5JPEE8A7DH9CGXB

Run Details

Duration:
6.3s
Cost:
$0.003069
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
10.35% 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 rain lashed against the attic window, masking the city's usual midnight symphony with its relentless, unforgiving rhythm. Detective Miles Corbin pushed open the creaking gate, his trench coat already soaked through to the bone tonight, shivering. A faint light glowed from the mansion's topmost floor, casting long, eerie shadows across the overgrown lawn now. He found the side door ajar, an invitation to a horror he certainly wished he had never received. Damp silence swallowed him whole as he stepped inside, the chill instantly biting at his exposed neck. She lay sprawled on the Persian rug, a silent, macabre tableau beneath the fractured chandelier above. Her wide eyes stared sightlessly at the ornate ceiling, reflecting only the dust motes slowly dancing. A single, emerald brooch glittered darkly beside her hand, a final, chilling message left here. Corbin felt a cold dread settle deep into his gut, a familiar companion on these dark nights. Another victim, another twisted game; the killer had undoubtedly just begun playing their deadly game.
created_at"2026-02-25T00:53:18.987Z" 2/25/2026, 12:53:18 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1378
moderation_latency(null)
generation_time6323
tokens_prompt46
tokens_completion797
native_tokens_prompt38
native_tokens_completion1223
native_tokens_completion_images0
native_tokens_reasoning1018
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"
usage0.0030689
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1378
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771980798-NEfzu4l0sEqfxKUImnXw"
upstream_id(null)
total_cost0.0030689
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
10.35% Matches word count n/a
neededCleanfalse
sentences10
wordCounts
018
119
218
318
417
516
616
715
817
915