Run: 2026-02-25-01KJ95WZZ5DGCK5RM49C2969KH

Run Details

Duration:
6.9s
Cost:
$0.003586
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
5.53% 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 wind howled its mournful song around Blackwood Manor, rattling ancient panes of cold, leaded glass. Rain lashed against the stone walls with relentless fury, mirroring the dark mood within the sprawling estate. Mrs. Albright, the long-serving housekeeper, descended the grand staircase, a flickering lantern in her trembling hand. She was checking the locks, a nightly ritual, before finally retiring to her small, quiet room. An unsettling chill, much colder than the night air, seemed to creep along the polished, wooden floorboards. A faint, coppery scent hung heavy in the musty air, striking Mrs. Albright with uncomfortable, growing dread. Her heart pounded an anxious rhythm as she moved towards the study door, slightly ajar, casting a long shadow. She pushed it open slowly, her breath catching in her throat at the terrible sight revealed inside. Sir Reginald Thorne lay slumped across his large oak desk, his usually stern eyes open wide. An ornate letter opener, now stained dark crimson, protruded starkly from his still, lifeless chest. Mrs. Albright dropped her lantern with a horrified gasp, its fragile glass shattering loudly on the floor. The shrill, piercing scream that escaped her lips tore through the mansion's oppressive silence upstairs.
created_at"2026-02-25T01:16:32.621Z" 2/25/2026, 1:16:32 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1202
moderation_latency(null)
generation_time6909
tokens_prompt46
tokens_completion870
native_tokens_prompt38
native_tokens_completion1430
native_tokens_completion_images0
native_tokens_reasoning1182
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"
usage0.0035864
router(null)
provider_responses
0
endpoint_id"16c01e26-9b91-4d22-b487-ed35634b017d"
is_byokfalse
latency1202
model_permaslug"google/gemini-2.5-flash"
provider_name"Google AI Studio"
status200
api_type"completions"
id"gen-1771982192-j6qhxphYbQJqFXzqFEv8"
upstream_id(null)
total_cost0.0035864
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
5.53% Matches word count n/a
neededCleanfalse
sentences12
wordCounts
016
117
216
316
417
517
619
717
816
915
1017
1115