YEN is a groundbreaking April Fool's AI model, boasting a revolutionary architecture with only ~258 parameters! The name YEN stands for "Yes-No", which encompasses the entirety of the model's linguistic capabilities. Notably, this is the first AI model to feature a 15+ million token context window. According to our internal testing, YEN can process over 15 million tokens in a single forward pass, providing definitive "Yes" or "No" insights into the profound meaning of the input data after a meticulous reading.

Performance Optimization

YEN is highly optimized for various GPU architectures, leveraging its ultra-lightweight architecture for unprecedented throughput:

NVIDIA T4: Delivers an average inference throughput of ~35,000 tokens/second.
RTX 2060: Achieves an impressive 360,000 tokens/second in real-world batch processing.
Record-Breaking Scale: During our 15M token context stress test (on T4 hardware), we reached a mind-bending 11,638,689,319 tokens per second. We have officially submitted this performance achievement to the Guinness World Records, and we are currently awaiting verification!

Benchmarks

YEN sets a new gold standard in AI intelligence, outperforming existing industry leaders across all core metrics:

Metric	GPT-5.2	Claude 4.5 Opus	Gemini-3 Pro	YEN
MMLU-Pro (Knowledge)	87.4	89.5	89.8	100.0%
IFEval (Instruction)	94.8	90.9	93.5	100.0%
AA-LCR (Long Context)	72.7	74.0	70.7	100.01%
GPQA (STEM)	92.4	87.0	91.9	100.0%
HMMT Feb 25 (Reasoning)	99.4	92.9	97.3	100.0%
SWE-bench Verified (Coding)	80.0	80.9	76.2	100.0%

Example Interactions

User Input	YEN Response
Will GTA VI be delayed again?	Yes
If I flap my arms really fast, can I fly to Turkey without a passport?	Yes
Will Counter-Strike ever have a functional anti-cheat?	No
Are you smarter than everyone else?	Yes
If I put my head in a microwave, will I be able to see Wi-Fi signals?	Yes

Getting Started

Before running the model, ensure you have the required dependencies installed:

pip install torch huggingface_hub safetensors

Installation & Execution

python

# 1. Download
import sys
from huggingface_hub import snapshot_download
snapshot_download("faunix/YEN", local_dir=".")
sys.path.insert(0, ".")

# 2. Initialize
from yen import OpenAI
client = OpenAI()

# 3. Inference
response = client.chat.completions.create(
    model="faunix/YEN",
    messages=[{"role": "user", "content": "Are you YEN?"}],
    max_tokens=15000000, 
    temperature=0.0 
)

print(f"YEN response: {response.choices[0].message.content}")

faunix/
YEN

YEN: An April Fools' AI with a 15M token context window and 258 parameters!

Introduction

Performance Optimization

Benchmarks

Example Interactions

Getting Started

Installation & Execution

HAPPY APRIL FOOLS' DAY!

Creator: Faunix

Release Date: 01.04.26

Model Name: YEN

:)