Run: 2026-07-25-01KYCXF9F1GHQCF3MY30NMSQFB

Run Details

Duration:
2.0s
Cost:
$0.001249
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
88.76% 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
Rain lashed against the tall windows of Blackwood Manor, blurring the dark forest that stretched endlessly into the night. Inside the dimly lit study, Lord Reginald sat motionless in his leather chair, a crimson stain spreading across his shirt. The grandfather clock chimed midnight, its heavy brass pendulum swinging slowly above the silent body resting on the Persian rug. A delicate porcelain teacup lay shattered near his feet, its remaining contents mixing with the fresh pool of dark blood. In his right hand, the dying nobleman gripped a silver pocket watch, its cracked face frozen at precisely eleven fifteen. The heavy oak door creaked open, revealing a shadowed figure holding a dripping umbrella and a pair of mud-stained gloves. Nobody heard the subtle click of the brass lock as the mysterious intruder stepped carefully into the silent room.
created_at"2026-07-25T15:14:34.601Z" 7/25/2026, 3:14:34 PM
model"google/gemini-3.6-flash-20260721"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency536
moderation_latency(null)
generation_time1890
tokens_prompt46
tokens_completion215
native_tokens_prompt38
native_tokens_completion159
native_tokens_completion_images0
native_tokens_reasoning0
native_tokens_cached0
num_media_prompt(null)
num_input_audio_prompt(null)
num_media_completion0
num_search_results(null)
num_fetches(null)
web_search_engine(null)
origin"https://ncbench.com/"
is_byokfalse
finish_reason"stop"
native_finish_reason"STOP"
service_tier"default"
usage0.0012495
router(null)
provider_responses
0
endpoint_id"5d6d133d-a953-4781-a835-7ee76f4e1388"
id"2tJkap_NLIaM_uMPtqXCkQk"
is_byokfalse
latency536
model_permaslug"google/gemini-3.6-flash-20260721"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.18.0; linux; x64))"
http_referer(null)
request_id"req-1784992474-XaD7nDyaR37Xl1XYLrW2"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1784992474-QnD8CAHoT97v3b0xh4n8"
upstream_id"2tJkap_NLIaM_uMPtqXCkQk"
total_cost0.0012495
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"

Evaluation details

Result Evaluator Details Meta Data
88.76% Matches word count n/a
neededCleanfalse
sentences7
wordCounts
019
120
220
320
420
520
619