Run: 2026-09-02-01M1HJF136KEAH2VSJYD1MEJXP

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
3.4s
Cost:
$0.004078
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
Midnight struck the old manor. Rain lashed the dark glass. Thunder shook the dusty chandelier. A scream pierced the night. Footsteps echoed down the hall. Lord Blackwood lay completely still. Red blood pooled beneath him. A silver dagger gleamed brightly. The heavy oak door creaked. Inspector Cross entered the study. He knelt beside the corpse. Cold eyes surveyed the room. The killer left no clues. A shattered pocket watch ticked. Deadly secrets lurked in silence.
created_at"2026-09-02T17:25:29.325Z" 9/2/2026, 5:25:29 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1341
moderation_latency(null)
generation_time3359
tokens_prompt46
tokens_completion289
native_tokens_prompt37
native_tokens_completion1080
native_tokens_completion_images0
native_tokens_reasoning985
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"
usage0.00407775
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788369929-4FD5lx4H5uZbthcTba7t"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788369929-2ZT3u9SPD6tHIFSbgmv1"
upstream_id"CVyYauGBGO2d_uMPo__CEQ"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"CVyYauGBGO2d_uMPo__CEQ"
is_byokfalse
latency1341
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.00407775
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
sentences15
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135
145