Run: 2026-09-02-01M1HJJ6ZRPJD2RQ8P3J5BA115

Run Details

Duration:
8.0s
Cost:
$0.011537
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
Cold rain lashed furiously against the tall windows of Blackwood Manor, where shadows danced beside an ominous, silent grandfather clock. Inside the private study, Lord Harrington lay sprawled across his velvet armchair with dark crimson pooling over the polished hardwood. A silver dagger protruded sharply from his embroidered waistcoat, its jeweled hilt catching the dying embers of the fireplace nearby. Detective Miller paused at the threshold, clutching his damp fedora while carefully assessing the untouched locks on both heavy doors. Nobody could have escaped this sealed chamber alive, meaning the ruthless killer remained hidden somewhere inside the dark estate tonight.
created_at"2026-09-02T17:27:13.664Z" 9/2/2026, 5:27:13 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency2679
moderation_latency(null)
generation_time7944
tokens_prompt46
tokens_completion708
native_tokens_prompt38
native_tokens_completion3069
native_tokens_completion_images0
native_tokens_reasoning2952
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"
usage0.01153725
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370033-Jnalq2XBzrykdvYrk5Ii"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370033-y0ObtoPChacpkgT91Lur"
upstream_id"cVyYaoH2LNuf1MkPwOyYoQE"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"cVyYaoH2LNuf1MkPwOyYoQE"
is_byokfalse
latency2675
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.01153725
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