Run: 2026-05-19-01KS0TTT5JVPD2ST4A5PNH1RBM

Run Details

Duration:
10.9s
Cost:
$0.025329
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
Rain lashed against the tall leaded glass windows of Blackwood Manor as midnight struck with a heavy, ominous metallic chime. Lord Arthur sat perfectly still in his favorite leather armchair, but his eyes stared blankly at the roaring brick fireplace. A single drop of dark blood dripped slowly from his pale lip onto the pristine white silk of his cravat. The loyal butler stepped into the study carrying a silver tray, oblivious to the grim tragedy awaiting him right there. The delicate porcelain teacup shattered loudly on the hardwood floor as he realized his master would never wake up again. A golden key gleamed inside the cold grasp of the dead aristocrat, catching the flickering light of the dying fire.
created_at"2026-05-19T19:19:04.12Z" 5/19/2026, 7:19:04 PM
model"google/gemini-3.5-flash-20260519"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1368
moderation_latency(null)
generation_time10778
tokens_prompt46
tokens_completion1055
native_tokens_prompt38
native_tokens_completion2808
native_tokens_completion_images0
native_tokens_reasoning2669
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"standard"
usage0.025329
router(null)
provider_responses
0
endpoint_id"bd50061c-e1d8-469e-96b1-d322e77378f8"
id"qLcMat3XEMShjrEP9ebZwQs"
is_byokfalse
latency1368
model_permaslug"google/gemini-3.5-flash-20260519"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.15.0; linux; x64))"
http_referer(null)
request_id"req-1779218344-lftgpThY6jLntexTmA1G"
session_id(null)
api_type"completions"
id"gen-1779218344-TcQF7jLjuPjyjB93nKmM"
upstream_id"qLcMat3XEMShjrEP9ebZwQs"
total_cost0.025329
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences6
wordCounts
020
120
220
320
420
520