Run: 2026-05-10-01KR8XWY94EPH834GEG220BV6Q

Run Details

Model:
Gemini 3.1 Flash Lite (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.0s
Cost:
$0.000132
Provider:
Google AI Studio

Evaluation summary

Score Evaluator
Details Link
70.49% 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
The heavy velvet curtains parted slowly to reveal the silent body lying cold upon the center of the dusty stage. Lighting flickered once then died leaving everyone in total darkness while the scent of bitter almonds filled the air. Inspector Thorne stepped forward carefully avoiding the broken glass that scattered across the floor beneath the bright golden light. He knew immediately that this was not a simple accident but a calculated performance executed by a hidden killer.
created_at"2026-05-10T12:30:53.229Z" 5/10/2026, 12:30:53 PM
model"google/gemini-3.1-flash-lite-20260507"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency499
moderation_latency(null)
generation_time919
tokens_prompt46
tokens_completion120
native_tokens_prompt38
native_tokens_completion82
native_tokens_completion_images0
native_tokens_reasoning0
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"
usage0.0001325
router(null)
provider_responses
0
endpoint_id"237af107-d2e9-46c7-b146-c74d75980dee"
id"fXoAatO7Ge_Sz7IPzPSkYA"
is_byokfalse
latency499
model_permaslug"google/gemini-3.1-flash-lite-20260507"
provider_name"Google AI Studio"
status200
user_agent"langchainjs-openai/1.0.0 ((node/v24.14.1; linux; x64))"
http_referer(null)
request_id"req-1778416253-KNqKMYBwPbsIfPfQ87oj"
session_id(null)
api_type"completions"
id"gen-1778416253-NoLFZONcwxicyVSiMP3y"
upstream_id"fXoAatO7Ge_Sz7IPzPSkYA"
total_cost0.0001325
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
70.49% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
119
219
319