Run: 2026-02-19-01KHVPQ64FPGRH47087QKSJGFF

Run Details

Duration:
38.2s
Cost:
$0.051832
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
The cold rain fell heavily on the dark window while the dead body was lying on the expensive Persian carpet. Detective Arthur Miller stood in the doorway, observing the bloody scene with a very grim expression on his tired face. The wealthy victim wore a completely ruined suit, and a beautiful silver dagger protruded sharply from his upper left back. A shattered glass lay near the pale hand, spilling red wine across the polished wooden floor towards the heavy desk. Thunder echoed loudly through the dreadful mansion, masking the sound of quiet footsteps coming from the grand marble staircase outside. Miller slowly pulled a pair of clean latex gloves from his tan coat pocket, stepping carefully over the red wine. Only three people held a valid brass key to this isolated room, and all three possessed terrible reasons for murder. The experienced detective knew this difficult investigation would finally reveal the darkest secrets hiding within this deeply fractured aristocratic family.
created_at"2026-02-19T19:41:05.891Z" 2/19/2026, 7:41:05 PM
model"google/gemini-3.1-pro-preview-20260219"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency3158
moderation_latency(null)
generation_time38047
tokens_prompt46
tokens_completion1557
native_tokens_prompt38
native_tokens_completion4313
native_tokens_completion_images0
native_tokens_reasoning4138
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"
usage0.051832
router(null)
provider_responses
0
endpoint_id"2abf5677-0826-45d9-8470-3d62c31d54a1"
is_byokfalse
latency3158
model_permaslug"google/gemini-3.1-pro-preview-20260219"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771530065-hbEiM1ShWlSGeM7ydeCP"
upstream_id(null)
total_cost0.051832
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