Run: 2026-02-19-01KHVPC3MZ7HA7Q9A3R1NQ7BEF

Run Details

Duration:
51.0s
Cost:
$0.047608
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
Thunder suddenly shattered the midnight silence, echoing through the desolate halls of the abandoned mansion where the bloody corpse lay. Detective Arthur Vance stepped slowly over the shattered glass, his trench coat dripping cold rainwater onto the faded Persian carpet. Lord Blackwood stared blindly at the vaulted ceiling, a solid gold dagger protruding from his velvet vest in grotesque mockery. A single crimson rose rested gently upon the lifeless chest, placed there deliberately by somebody who loved and hated him. Lightning flashed through the tall windows, casting long, menacing shadows across the lavish room filled with dangerous, unspoken family secrets. Vance knelt beside the wealthy aristocrat, pulling a magnifying glass from his pocket to examine the strange metallic murder weapon. He noticed a small piece of parchment clutched tightly inside the dead fingers, containing a terrifying and highly cryptic message. The killer was clearly still trapped somewhere inside this sprawling estate, waiting patiently for another chance to strike again tonight.
created_at"2026-02-19T19:35:02.911Z" 2/19/2026, 7:35:02 PM
model"google/gemini-3.1-pro-preview-20260219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3715
moderation_latency(null)
generation_time50846
tokens_prompt46
tokens_completion1483
native_tokens_prompt38
native_tokens_completion3961
native_tokens_completion_images0
native_tokens_reasoning3779
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"
usage0.047608
router(null)
provider_responses
0
endpoint_id"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byokfalse
latency3715
model_permaslug"google/gemini-3.1-pro-preview-20260219"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771529702-69Mn8FIz2kJhGR4ZnijY"
upstream_id(null)
total_cost0.047608
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
sentences8
wordCounts
020
120
220
320
420
520
620
720