JoyAI-LLM-Flash-INT8

<div align="center"> <picture> <img src="figures/joyai-logo.png" width="30%" alt="JoyAI-LLM Flash"> </picture> </div> <hr> <div align="center" style="line-height: 1;"> <a href="https://huggingface.co/jdopensource" target="_blank"><img alt="Hugging Face" src="https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-JD-ffc107?color=ffc107&logoColor=white"/></a> <a href="https://huggingface.co/jdopensource/JoyAI-LLM-Flash/blob/main/LICENSE"><img alt="License" src="https://img.shields.io/badge/License-Modified_MIT-f5de53?&color=f5de53"/></a> </div>

1. Model Introduction

JoyAI-LLM-Flash is a state-of-the-art medium-sized instruct language model with 3 billion activated parameters and 48 billion total parameters. JoyAI-LLM-Flash was pretrained on 20 trillion text tokens using Muon optimizer, followed by large-scale supervised fine-tuning (SFT), direct preference optimization (DPO), and reinforcement learning (RL) across diverse environments. JoyAI-LLM-Flash achieves strong performance across frontier knowledge, reasoning, coding tasks and agentic capabilities.

Key Features

• Fiber Bundle RL: Introduces fiber bundle theory into reinforcement learning, proposing a novel optimization framework, FiberPO. This method is specifically designed to handle the challenges of large-scale and heterogeneous agent training, improving stability and robustness under complex data distributions.
• Training-Inference Collaboration: apply Muon optimizer with dense MTP, develop novel optimization techniques to resolve instabilities while scaling up, delivering 1.3× to 1.7× the throughput of the non-MTP version.
• Agentic Intelligence: designed for tool use, reasoning, and autonomous problem-solving.

2. Model Summary

3. Evaluation Results

<table> <thead> <tr> <th align="center">Benchmark</th> <th align="center">^{JoyAI-LLM Flash}</th> <th align="center">^{Qwen3-30B-A3B-Instuct-2507}</th> <th align="center">^{GLM-4.7-Flash<br>(Non-thinking)}</th> </tr> </thead> <tbody> <tr> <td align="center" colspan=8><strong>Knowledge &amp; Alignment</strong></td> </tr> <tr> <td align="center" style="vertical-align: middle">MMLU</td> <td align="center" style="vertical-align: middle"><strong>89.50</strong></td> <td align="center" style="vertical-align: middle">86.87</td> <td align="center" style="vertical-align: middle">80.53</td> </tr> <tr> <td align="center" style="vertical-align: middle">MMLU-Pro</td> <td align="center" style="vertical-align: middle"><strong>81.02</strong></td> <td align="center" style="vertical-align: middle">73.88</td> <td align="center" style="vertical-align: middle">63.62</td> </tr> <tr> <td align="center" style="vertical-align: middle">CMMLU</td> <td align="center" style="vertical-align: middle"><strong>87.03</strong></td> <td align="center" style="vertical-align: middle">85.88</td> <td align="center" style="vertical-align: middle">75.85</td> </tr> <tr> <td align="center" style="vertical-align: middle">GPQA-Diamond</td> <td align="center" style="vertical-align: middle"><strong>74.43</strong></td> <td align="center" style="vertical-align: middle">68.69</td> <td align="center" style="vertical-align: middle">39.90</td> </tr> <tr> <td align="center" style="vertical-align: middle">SuperGPQA</td> <td align="center" style="vertical-align: middle"><strong>55.00</strong></td> <td align="center" style="vertical-align: middle">52.00</td> <td align="center" style="vertical-align: middle">32.00</td> </tr> <tr> <td align="center" style="vertical-align: middle">LiveBench</td> <td align="center" style="vertical-align: middle"><strong>72.90</strong></td> <td align="center" style="vertical-align: middle">59.70</td> <td align="center" style="vertical-align: middle">43.10</td> </tr> <tr> <td align="center" style="vertical-align: middle">IFEval</td> <td align="center" style="vertical-align: middle"><strong>86.69</strong></td> <td align="center" style="vertical-align: middle">83.18</td> <td align="center" style="vertical-align: middle">82.44</td> </tr> <tr> <td align="center" style="vertical-align: middle">AlignBench</td> <td align="center" style="vertical-align: middle"><strong>8.24</strong></td> <td align="center" style="vertical-align: middle">8.07</td> <td align="center" style="vertical-align: middle">6.85</td> </tr> <tr> <td align="center" style="vertical-align: middle">HellaSwag</td> <td align="center" style="vertical-align: middle"><strong>91.79</strong></td> <td align="center" style="vertical-align: middle">89.90</td> <td align="center" style="vertical-align: middle">60.84</td> </tr> <tr> <td align="center" colspan=8><strong>Coding</strong></td> </tr> <tr> <td align="center" style="vertical-align: middle">HumanEval</td> <td align="center" style="vertical-align: middle"><strong>96.34</strong></td> <td align="center" style="vertical-align: middle">95.12</td> <td align="center" style="vertical-align: middle">74.39</td> </tr> <tr> <td align="center" style="vertical-align: middle">LiveCodeBench</td> <td align="center" style="vertical-align: middle"><strong>65.60</strong></td> <td align="center" style="vertical-align: middle">39.71</td> <td align="center" style="vertical-align: middle">27.43</td> </tr> <tr> <td align="center" style="vertical-align: middle">SciCode</td> <td align="center" style="vertical-align: middle"><strong>3.08/22.92</strong></td> <td align="center" style="vertical-align: middle"><strong>3.08/22.92</strong></td> <td align="center" style="vertical-align: middle">3.08/15.11</td> </tr> <tr> <td align="center" colspan=8><strong>Mathematics</strong></td> </tr> <tr> <td align="center" style="vertical-align: middle">GSM8K</td> <td align="center" style="vertical-align: middle"><strong>95.83</strong></td> <td align="center" style="vertical-align: middle">79.83</td> <td align="center" style="vertical-align: middle">81.88</td> </tr> <tr> <td align="center" style="vertical-align: middle">AIME2025</td> <td align="center" style="vertical-align: middle"><strong>65.83</strong></td> <td align="center" style="vertical-align: middle">62.08</td> <td align="center" style="vertical-align: middle">24.17</td> </tr> <tr> <td align="center" style="vertical-align: middle">MATH 500</td> <td align="center" style="vertical-align: middle"><strong>97.10</strong></td> <td align="center" style="vertical-align: middle">89.80</td> <td align="center" style="vertical-align: middle">90.90</td> </tr> <tr> <td align="center" colspan=8><strong>Agentic</strong></td> </tr> <tr> <td align="center" style="vertical-align: middle">SWE-bench Verified</td> <td align="center" style="vertical-align: middle"><strong>60.60</strong></td> <td align="center" style="vertical-align: middle">24.44</td> <td align="center" style="vertical-align: middle">51.60</td> </tr> <tr> <td align="center" style="vertical-align: middle">Tau2-Retail</td> <td align="center" style="vertical-align: middle"><strong>67.55</strong></td> <td align="center" style="vertical-align: middle">53.51</td> <td align="center" style="vertical-align: middle">62.28</td> </tr> <tr> <td align="center" style="vertical-align: middle">Tau2-Airline</td> <td align="center" style="vertical-align: middle"><strong>54.00</strong></td> <td align="center" style="vertical-align: middle">32.00</td> <td align="center" style="vertical-align: middle">52.00</td> </tr> <tr> <td align="center" style="vertical-align: middle">Tau2-Telecom</td> <td align="center" style="vertical-align: middle">79.83</td> <td align="center" style="vertical-align: middle">4.39</td> <td align="center" style="vertical-align: middle"><strong>88.60</strong></td> </tr> <tr> <td align="center" colspan=8><strong>Long Context</strong></td> </tr> <tr> <td align="center" style="vertical-align: middle">RULER</td> <td align="center" style="vertical-align: middle"><strong>95.60</strong></td> <td align="center" style="vertical-align: middle">89.66</td> <td align="center" style="vertical-align: middle">56.12</td> </tr> </tbody> </table>

4. Deployment

[!Note] You can access JoyAI-LLM Flash API on https://docs.jdcloud.com/cn/jdaip/chat and we provide OpenAI/Anthropic-compatible API for you. Currently, JoyAI-LLM-Flash-Block-INT8 is recommended to run on the following inference engines:

• SGLang

Deployment examples can be found in the Model Deployment Guide.

5. Model Usage

The usage demos below demonstrate how to call our official API.

For third-party APIs deployed with vLLM or SGLang, please note that:

[!Note] Recommended sampling parameters: temperature=0.6, top_p=1.0

Chat Completion

This is a simple chat completion script which shows how to call JoyAI-Flash API.

from openai import OpenAI

client = OpenAI(base_url="http://IP:PORT/v1", api_key="EMPTY")


def simple_chat(client: OpenAI):
    messages = [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "which one is bigger, 9.11 or 9.9? think
carefully.",
                }
            ],
        },
    ]
    model_name = client.models.list().data[0].id
    response = client.chat.completions.create(
        model=model_name, messages=messages, stream=False, max_tokens=4096
    )
    print(f"response: {response.choices[0].message.content}")


if __name__ == "__main__":
    simple_chat(client)

Tool call Completion

This is a simple toll call completion script which shows how to call JoyAI-Flash API.

import json

from openai import OpenAI

client = OpenAI(base_url="http://IP:PORT/v1", api_key="EMPTY")


def my_calculator(expression: str) -> str:
    return str(eval(expression))


def rewrite(expression: str) -> str:
    return str(expression)


def simple_tool_call(client: OpenAI):
    messages = [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "use my functions to compute the results for the
equations: 6+1",
                },
            ],
        },
    ]
    tools = [
        {
            "type": "function",
            "function": {
                "name": "my_calculator",
                "description": "A calculator that can evaluate a mathematical
equation and compute its results.",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "expression": {
                            "type": "string",
                            "description": "The mathematical expression to
evaluate.",
                        },
                    },
                    "required": ["expression"],
                },
            },
        },
        {
            "type": "function",
            "function": {
                "name": "rewrite",
                "description": "Rewrite a given text for improved clarity",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "text": {
                            "type": "string",
                            "description": "The input text to rewrite",
                        }
                    },
                },
            },
        },
    ]
    model_name = client.models.list().data[0].id
    response = client.chat.completions.create(
        model=model_name,
        messages=messages,
        temperature=1.0,
        max_tokens=1024,
        tools=tools,
        tool_choice="auto",
    )
    tool_calls = response.choices[0].message.tool_calls

    results = []
    for tool_call in tool_calls:
        function_name = tool_call.function.name
        function_args = tool_call.function.arguments
        if function_name == "my_calculator":
            result = my_calculator(**json.loads(function_args))
            results.append(result)
    messages.append({"role": "assistant", "tool_calls": tool_calls})
    for tool_call, result in zip(tool_calls, results):
        messages.append(
            {
                "role": "tool",
                "tool_call_id": tool_call.id,
                "name": tool_call.function.name,
                "content": result,
            }
        )
    response = client.chat.completions.create(
        model=model_name,
        messages=messages,
        temperature=1.0,
        max_tokens=1024,
    )
    print(response.choices[0].message.content)


if __name__ == "__main__":
    simple_tool_call(client)

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6. License

Both the code repository and the model weights are released under the Modified MIT License.