Run: 2026-05-10-01KR8XYHYCV804QPXTPJM8VJ95

Run Details

Model:
Gemini 3.1 Flash Lite (Reasoning)
Test:
N-Length Sentences
Scenario:
Write sentences with 20 words each
Duration:
1.1s
Cost:
$0.000155
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 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 lifeless body sprawled across the ornate rug in the cold library. Dark crimson stains bloomed like jagged flowers upon the victim’s white shirt while the grandfather clock ticked rhythmically nearby tonight. Detective Miller stepped inside the silent room, his sharp eyes scanning the debris for any clues left by the killer. Rain lashed against the tall glass windows, masking the sound of footsteps that echoed softly from the dark hallway outside.
created_at"2026-05-10T12:31:46.131Z" 5/10/2026, 12:31:46 PM
model"google/gemini-3.1-flash-lite-20260507"
app_id182717
external_user(null)
streamedtrue
cancelledfalse
latency637
moderation_latency(null)
generation_time1021
tokens_prompt46
tokens_completion133
native_tokens_prompt38
native_tokens_completion97
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"
usage0.000155
router(null)
provider_responses
0
endpoint_id"237af107-d2e9-46c7-b146-c74d75980dee"
id"snoAapv4E6iGz7IPiuWD-Ag"
is_byokfalse
latency637
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-1778416306-wBApHoe1oT0N0rzkLFUp"
session_id(null)
api_type"completions"
id"gen-1778416306-IzVVOAjNwEGrZzZ4UKaL"
upstream_id"snoAapv4E6iGz7IPiuWD-Ag"
total_cost0.000155
cache_discount(null)
upstream_inference_cost0
provider_name"Google AI Studio"
response_cache_source_id(null)

Evaluation details

Result Evaluator Details Meta Data
100.00% Matches word count n/a
neededCleanfalse
sentences4
wordCounts
020
120
220
320