Run: 2026-09-02-01M1HJPSMFQAQKWA2ZJ8TTJZTV

Run Details

Model:
Gemini 3.8 Flash (Reasoning, Medium)
Test:
N-Length Sentences
Scenario:
Write sentences with 5 words each
Duration:
5.1s
Cost:
$0.006467
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 the window. Midnight struck inside the manor. Lord Blackwood held his breath. A scream pierced the silence. Footsteps echoed down the hall. He rushed toward the library. Heavy wooden doors stood open. Cold air filled his lungs. Shattered glass covered the carpet. The duke lay entirely motionless. Dark blood pooled around him. A silver dagger glinted nearby. Nobody else was in sight. The killer was still here.
created_at"2026-09-02T17:29:43.83Z" 9/2/2026, 5:29:43 PM
model"google/gemini-3.8-flash-20260902"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency1596
moderation_latency(null)
generation_time5068
tokens_prompt46
tokens_completion447
native_tokens_prompt37
native_tokens_completion1717
native_tokens_completion_images0
native_tokens_reasoning1628
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"
usage0.0064665
router(null)
user_agent"langchainjs-openai/1.0.0 ((node/v24.19.0; linux; x64))"
http_referer(null)
request_id"req-1788370183-BxiKq7gOqh1u8ljiIosr"
session_id(null)
preset_id(null)
api_type"completions"
id"gen-1788370183-3bNyDeDMEFcE8nfHrPqn"
upstream_id"B12YasrtNouq_uMP8oe9uQ0"
provider_responses
0
endpoint_id"d376f781-516d-42f9-936d-46f19abca6cc"
id"B12YasrtNouq_uMP8oe9uQ0"
is_byokfalse
latency1596
model_permaslug"google/gemini-3.8-flash-20260902"
provider_name"Google AI Studio"
status200
total_cost0.0064665
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
sentences14
wordCounts
05
15
25
35
45
55
65
75
85
95
105
115
125
135