Run: 2026-02-25-01KJ95KA36PA2J49X83X20QS0K

Run Details

Duration:
7.5s
Cost:
$0.004399
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
11.87% 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 grand old mansion cast a long, eerie shadow across the desolate, windswept, forgotten grounds as twilight approached. Detective Inspector Evelyn Reed pulled her worn trench coat tighter against the biting, unforgiving, cold evening air blowing. The flashing blue and red emergency lights pulsed rhythmically, painting the gothic architecture with a grim, sickly glow. A hushed, weighty silence hung thickly, broken only by a distant, mournful, constant police radio crackle now. Uniformed officers guarded the heavy, ornate oak door, their faces etched with serious, profound, unspoken fatigue already. Sergeant Miller met her at the threshold, his normally jovial features now a mask of grim, professional concern only. “Inside, Inspector,” he whispered, his voice low, heavy with the weight of unspeakable, discovered tragedy lying there. Evelyn stepped through the portal into a drawing-room filled with antique furniture and oppressive, stagnant air inside. A Persian rug, once vibrant, now lay stained a dark, horrifying crimson near the cold, unlit hearth.
created_at"2026-02-25T01:11:15.308Z" 2/25/2026, 1:11:15 AM
model"google/gemini-2.5-flash"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1300
moderation_latency(null)
generation_time7488
tokens_prompt46
tokens_completion993
native_tokens_prompt38
native_tokens_completion1755
native_tokens_completion_images0
native_tokens_reasoning1552
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"
usage0.0043989
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-1771981875-dzkZoaR1cdqArgbaqpmT"
upstream_id(null)
total_cost0.0043989
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"

Evaluation details

Result Evaluator Details Meta Data
11.87% Matches word count n/a
neededCleanfalse
sentences9
wordCounts
018
118
218
317
417
519
617
717
817