Run: 2026-09-02-01M1HJXER3XGTJKWWJ0ABDD4MD

Run Details

Duration:
7.3s
Cost:
$0.006535
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
Heavy rain lashed against the cracked stained glass window, casting morbid crimson shadows across the polished oak library floor tonight. Lord Harrington sat unnaturally stiff inside his velvet armchair, displaying an ornate silver letter opener buried deep within his chest. A pool of dark blood stained his silk waistcoat, slowly dripping onto an unfinished will resting upon the mahogany desk. Inspector Vance shook the cold water from his worn tweed coat before kneeling beside the dead patriarch to investigate further. The grandfather clock struck midnight, echoing through locked corridors where several terrified heirs were desperately hiding their own sinister secrets.
created_at"2026-09-02T17:33:23.31Z" 9/2/2026, 5:33:23 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1396
moderation_latency(null)
generation_time6059
tokens_prompt46
tokens_completion643
native_tokens_prompt38
native_tokens_completion1735
native_tokens_completion_images0
native_tokens_reasoning1625
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"
usage0.00653475
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370403-xeNgN9TtqjcV4fFGJIsu"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370403-I3R8PDsOE1rloQRlwjBo"
upstream_id"412YaqLhFpnQ_uMPhq-tmAE"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"412YaqLhFpnQ_uMPhq-tmAE"
is_byokfalse
latency1396
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.00653475
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)
data_region"global"
workspace_id"97e315e5-d303-487d-83c1-83180e8a13d4"

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences5
wordCounts
020
120
220
320
420