---
license: apache-2.0
datasets:
- Aquiles-ai/Athenea-40k
language:
- en
- es
- de
- fr
- it
base_model:
- huihui-ai/Huihui-Qwen3-4B-Thinking-2507-abliterated
tags:
- math
- code
- merge
- qwen3
- uncensored
- conversational
- agent
- athenea
pipeline_tag: text-generation
library_name: transformers
---
<h1 align="center">Athenea-4B-Thinking</h1>

![image](atheneamodel.png)

**Athenea-4B-Thinking** is a fine-tuned version of [huihui-ai/Huihui-Qwen3-4B-Thinking-2507-abliterated](https://huggingface.co/huihui-ai/Huihui-Qwen3-4B-Thinking-2507-abliterated), designed as a **general-purpose reasoning model** capable of handling mathematical, multilingual, and conversational reasoning tasks.  
Trained on diverse, high-quality reasoning data with explicit `<think>` and `</think>` traces, this model represents the **core generalist** version of the Athenea family, intended as a foundation for specialized reasoning variants.

> ⚠️ **Important Note:** This model uses an *abliterated (uncensored)* base version, providing full expressive freedom and unrestricted output generation. Users are fully responsible for any use or content produced by the model. It is intended exclusively for research and experimentation purposes.

## 🎯 Model Description

Athenea-4B-Thinking leverages the structured reasoning framework of Huihui-Qwen3 and expands it across multiple domains and languages. It serves as a **multidomain reasoning model**, performing well in both conversational and analytical contexts.

Key features:

* **Step-by-step reasoning** within `<think>` blocks  
* **General reasoning across math, language, and logic**  
* **Multilingual understanding and response generation**  
* **Uncensored reasoning output** for transparency  
* **Improved logical consistency** through focused fine-tuning  
* **Compatible with open inference frameworks** (Transformers, vLLM, etc.)

The model was fine-tuned using the dataset [Aquiles-ai/Athenea-40k](https://huggingface.co/datasets/Aquiles-ai/Athenea-40k).

> Note: Fine-tuning was performed using **Kronos**, Aquiles-ai’s proprietary enterprise fine-tuning system.


## 💻 Usage

### Installation

```bash
uv pip install transformers torch accelerate
```

### Basic Inference

```python
from transformers import AutoModelForCausalLM, AutoTokenizer
import torch

model = AutoModelForCausalLM.from_pretrained("Aquiles-ai/Athenea-4B-Thinking",
        dtype=torch.bfloat16,
        trust_remote_code=True,
        device_map="auto",
        attn_implementation="flash_attention_2") # Requires flash-attn

# Without flash-attn:
# model = AutoModelForCausalLM.from_pretrained("Aquiles-ai/Athenea-4B-Thinking",
#     dtype="auto",
#     device_map="auto"
# )

tokenizer = AutoTokenizer.from_pretrained("Aquiles-ai/Athenea-4B-Thinking", trust_remote_code=True)
messages = [
    {"role": "user", "content": "Hey, explain to me in simple terms how reinforcement learning works."}
]

inputs = tokenizer.apply_chat_template(
    messages,
    add_generation_prompt=True,
    tokenize=True,
    return_dict=True,
    return_tensors="pt",
).to('cuda')

with torch.no_grad():
    output = model.generate(
        **inputs,
        max_new_tokens=8092,
        pad_token_id=tokenizer.eos_token_id,
        eos_token_id=tokenizer.eos_token_id,
    )

# Decode and print the output
print(tokenizer.decode(output[0], skip_special_tokens=True))
```

### Streaming Inference

```python
from transformers import AutoModelForCausalLM, AutoTokenizer, TextIteratorStreamer
import torch
from threading import Thread

model = AutoModelForCausalLM.from_pretrained("Aquiles-ai/Athenea-4B-Thinking",
        dtype=torch.bfloat16,
        trust_remote_code=True,
        device_map="auto",
        attn_implementation="flash_attention_2")

tokenizer = AutoTokenizer.from_pretrained("Aquiles-ai/Athenea-4B-Thinking", trust_remote_code=True)

messages = [
    {"role": "user", "content": "Hey, explain the difference between artificial intelligence, machine learning, and deep learning."}
]

inputs = tokenizer.apply_chat_template(
    messages,
    add_generation_prompt=True,
    tokenize=True,
    return_dict=True,
    return_tensors="pt",
).to('cuda')

# Create the streamer
streamer = TextIteratorStreamer(tokenizer, skip_prompt=True, skip_special_tokens=True)

# Build kwargs for generate
generate_kwargs = dict(
    **inputs,
    max_new_tokens=8092,
    pad_token_id=tokenizer.eos_token_id,
    eos_token_id=tokenizer.eos_token_id,
    streamer=streamer,
)

def _generate_thread(model, kwargs):
    with torch.no_grad():
        model.generate(**kwargs)

thread = Thread(target=_generate_thread, args=(model, generate_kwargs))

thread.start()

for chunk in streamer:
    print(chunk, end="", flush=True)
```

### Production Deployment with vLLM

**Start server:**

```bash
vllm serve Aquiles-ai/Athenea-4B-Thinking \
  --host 0.0.0.0 \
  --port 8000 \
  --api-key dummyapikey \
  --max-model-len=16384 \
  --async-scheduling \
  --gpu-memory-utilization=0.90
```

**Request to the server from the OpenAI client:**

```python
from openai import OpenAI

client = OpenAI(api_key="dummyapikey", base_url="http://127.0.0.1:8000/v1")

stream = client.chat.completions.create(
    model="Aquiles-ai/Athenea-4B-Thinking",
    messages=[{
        "role": "user",
        "content": "Hey, tell me how a large language model like Llama or GPT is trained."
    }],
    max_tokens=8092,
    stream=True
)

for chunk in stream:
    if chunk.choices[0].delta.content:
        print(chunk.choices[0].delta.content, end="", flush=True)
```

**vLLM Benefits:** 20-30x faster inference, OpenAI-compatible API, continuous batching, async scheduling.

### Aquiles-playground

In addition to code usage, you can also try our models locally through an [open-source playground on GitHub](https://github.com/Aquiles-ai/aquiles-playground).

![preview](preview_playground.png)

<p align="center">
  Made with ❤️ by <a href="https://github.com/Aquiles-ai">Aquiles-ai</a>
</p>