Run: 2026-09-02-01M1HJSJ3S662DVN9HSC371WBY

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.9s
Cost:
$0.005956
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 5 words. Please make sure that each sentence has the same length. Only return the opening itself.

Model response

AI
Rain lashed against cold glass. The grandfather clock struck midnight. Arthur entered the quiet library. Heavy shadows swallowed the room. A single candle flickered weakly. Lord Blackwood sat completely motionless. His head rested upon mahogany. Dark blood pooled beneath him. A silver dagger pierced parchment. The cryptic message read beware. Footsteps faded into the darkness. Arthur reached for his revolver.
created_at"2026-09-02T17:31:14.433Z" 9/2/2026, 5:31:14 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1223
moderation_latency(null)
generation_time4888
tokens_prompt46
tokens_completion454
native_tokens_prompt37
native_tokens_completion1581
native_tokens_completion_images0
native_tokens_reasoning1506
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"
usage0.0059565
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370274-59qqVOq7PfXEYHOLOhjS"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370274-KtRGEDjxWC23ER34HhV4"
upstream_id"Yl2Yavn0HqyN_PUP8I7twA0"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"Yl2Yavn0HqyN_PUP8I7twA0"
is_byokfalse
latency1222
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.0059565
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
sentences12
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115