Run: 2026-09-02-01M1HGEBVZ711Z7GW8MJD1V8D5

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
4.5s
Cost:
$0.005109
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 the tall windows. Thunder shook the dark mansion. Arthur entered the quiet library. A cold breeze touched him. The grandfather clock chimed midnight. Fresh blood stained the carpet. Lord Blackwood lay face down. A silver dagger pierced him. His pale hand held paper. Heavy footsteps echoed outside now. Arthur froze in pure terror. The killer was still inside.
created_at"2026-09-02T16:50:10.442Z" 9/2/2026, 4:50:10 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1070
moderation_latency(null)
generation_time4496
tokens_prompt46
tokens_completion348
native_tokens_prompt37
native_tokens_completion1355
native_tokens_completion_images0
native_tokens_reasoning1281
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"
usage0.005109
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788367810-OB29sP6pwfvXZ43IrvpX"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788367810-v3Ho9D39xUSFRDTo35YI"
upstream_id"wlOYao6ZII3SjMcPsMHfoAo"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"wlOYao6ZII3SjMcPsMHfoAo"
is_byokfalse
latency1070
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.005109
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