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README.md
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license: mit
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base_model:
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- inclusionAI/Ling-flash-base-2.0
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pipeline_tag: text-generation
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library_name: transformers
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---
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*4QxcQrBlTiAAAAAAQXAAAAgAemJ7AQ/original" width="100"/>
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<p>
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<p align="center">π€ <a href="https://huggingface.co/inclusionAI">Hugging Face</a>   |   π€ <a href="https://modelscope.cn/organization/inclusionAI">ModelScope</a></p>
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## Introduction
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Today,
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Following the release of the
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Trained on
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### Powerful Complex Reasoning Abilities
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We conducted a comprehensive evaluation of Ling-flash-2.0βs reasoning capabilities, reporting strong results on representative benchmarks:
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* __Multi-disciplinary knowledge reasoning__: GPQA-Diamond, MMLU-Pro
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* __Advanced mathematical reasoning__: AIME 2025, Omni-MATH, OptMATH (advanced mathematical optimization tasks)
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* __Challenging code generation__: LiveCodeBench v6, CodeForces-Elo
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* __Logical reasoning__: KOR-Bench, ARC-Prize
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* __Key regulated industries (Finance, Healthcare)__: FinanceReasoning, HealthBench
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/zxAvQ7QtrAwAAAAAQqAAAAgADkZ7AQFr/fmt.webp"/>
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<p>
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/fMdiQZqYKSAAAAAAVdAAAAgADkZ7AQFr/fmt.avif"/>
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<p>
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Guided by [Ling Scaling Laws](https://arxiv.org/abs/2507.17702), Ling 2.0 adopts a
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In other words, with just
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* On __H20 hardware__, Ling-flash-2.0 achieves __200+ tokens/s__, offering __3Γ speedups__ compared to 36B dense models in everyday use.
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* With __YaRN extrapolation__, it supports __128K context length__, and as output length grows, its relative speedup can reach __7Γ or more__.
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/oR9UTY7S0QgAAAAAgKAAAAgADkZ7AQFr/original"/>
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/Hid1RrgsCUAAAAAAQYAAAAgADkZ7AQFr/fmt.webp"/>
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<p>
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-
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## Model Downloads
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You can download the following table to see the various stage of Ling-flash-2.0 models. If you are located in mainland China, we also provide the model on ModelScope.cn to speed up the download process.
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<center>
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</center>
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Note: If you are interested in previous version, please visit the past model collections in [Huggingface](https://huggingface.co/inclusionAI) or [ModelScope](https://modelscope.cn/organization/inclusionAI).
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## Quickstart
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### π€ Hugging Face Transformers
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Here is a code snippet to show you how to use the chat model with `transformers`:
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```
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To handle long context in vLLM using YaRN, we need to follow these two steps:
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1. Add a `rope_scaling` field to the model's `config.json` file, for example:
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```json
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{
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...,
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}
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}
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```
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2. Use an additional parameter `--max-model-len` to specify the desired maximum context length when starting the vLLM service.
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For detailed guidance, please refer to the vLLM [`instructions`](https://docs.vllm.ai/en/latest/).
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### SGLang
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#### Environment Preparation
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We will later submit our model to SGLang official release, now we can prepare the environment following steps:
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```shell
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pip3 install sglang==0.5.2rc0 sgl-kernel==0.3.7.post1
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```
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You can use docker image as well:
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```shell
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docker pull lmsysorg/sglang:v0.5.2rc0-cu126
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```
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Then you should apply patch to sglang installation:
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```shell
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# patch command is needed, run `yum install -y patch` if needed
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patch -d `python -c 'import sglang;import os; print(os.path.dirname(sglang.__file__))'` -p3 < inference/sglang/bailing_moe_v2.patch
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#### Run Inference
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BF16 and FP8 models are supported by SGLang now, it depends on the dtype of the model in ${MODEL_PATH}. They both share the same command in the following:
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- Start server:
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```shell
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python -m sglang.launch_server \
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--model-path $MODLE_PATH \
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--trust-remote-code \
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--attention-backend fa3
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```
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MTP is supported for base model, and not yet for chat model. You can add parameter `--speculative-algorithm NEXTN`
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to start command.
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More usage can be found [here](https://docs.sglang.ai/basic_usage/send_request.html)
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### Finetuning
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We recommend you to use [Llama-Factory](https://github.com/hiyouga/LLaMA-Factory) to [finetune Ling](https://github.com/inclusionAI/Ling-V2/blob/main/docs/llamafactory_finetuning.md).
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## License
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This code repository is licensed under [the MIT License](https://github.com/inclusionAI/Ling-V2/blob/master/LICENCE).
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---
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license: mit
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base_model:
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- inclusionAI/Ling-flash-base-2.0
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pipeline_tag: text-generation
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library_name: transformers
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---
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_qa8qxu/afts/img/A*4QxcQrBlTiAAAAAAQXAAAAgAemJ7AQ/original" width="100"/>
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<p>
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<p align="center">π€ <a href="https://huggingface.co/inclusionAI">Hugging Face</a>   |   π€ <a href="https://modelscope.cn/organization/inclusionAI">ModelScope</a>   |   π <a href="https://zenmux.ai/inclusionai/ling-flash-2.0">ChatNow</a></p>
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## Introduction
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Today, **Ling-flash-2.0** is officially open-sourced! π
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Following the release of the **language model [Ling-mini-2.0](https://huggingface.co/inclusionAI/Ling-mini-2.0)** and the **thinking model [Ring-mini-2.0](https://huggingface.co/inclusionAI/Ring-mini-2.0)**, we are now open-sourcing the third MoE LLM under the **Ling 2.0 architecture: Ling-flash-2.0**, a language model with **100B total parameters** and **6.1B activated parameters (4.8B non-embedding)**.
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Trained on **20T+ tokens of high-quality data**, together with **supervised fine-tuning** and **multi-stage reinforcement learning**, Ling-flash-2.0 achieves **SOTA performance among dense models under 40B parameters**, despite activating only ~6B parameters. Compared to MoE models with larger activation/total parameters, it also demonstrates strong competitiveness. Notably, it delivers outstanding performance in **complex reasoning, code generation, and frontend development**.
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### Powerful Complex Reasoning Abilities
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We conducted a comprehensive evaluation of Ling-flash-2.0βs reasoning capabilities, reporting strong results on representative benchmarks:
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- **Multi-disciplinary knowledge reasoning**: GPQA-Diamond, MMLU-Pro
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- **Advanced mathematical reasoning**: AIME 2025, Omni-MATH, OptMATH (advanced mathematical optimization tasks)
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- **Challenging code generation**: LiveCodeBench v6, CodeForces-Elo
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- **Logical reasoning**: KOR-Bench, ARC-Prize
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- **Key regulated industries (Finance, Healthcare)**: FinanceReasoning, HealthBench
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Compared with **dense models under 40B** (e.g., Qwen3-32B-Non-Thinking, Seed-OSS-36B-Instruct (think budget=0)) and **larger-activation/total-parameter MoE models** (e.g., Hunyuan-A13B-Instruct, GPT-OSS-120B/low), **Ling-flash-2.0** demonstrates stronger complex reasoning power. Moreover, it shows high competitiveness on **creative tasks** (Creative Writing v3).
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/zxAvQ7QtrAwAAAAAQqAAAAgADkZ7AQFr/fmt.webp"/>
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<p>
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/fMdiQZqYKSAAAAAAVdAAAAgADkZ7AQFr/fmt.avif"/>
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<p>
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Guided by [Ling Scaling Laws](https://arxiv.org/abs/2507.17702), Ling 2.0 adopts a **1/32 activation-ratio MoE architecture**, optimized across multiple design choices: expert granularity, shared-expert ratio, attention balance, **aux-loss-free + sigmoid routing strategy**, MTP layers, QK-Norm, Partial-RoPE, and more. These refinements enable **small-activation MoE** models to achieve **7Γ efficiency gains** over equivalent dense architectures.
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In other words, with just **6.1B activated parameters (4.8B non-embedding)**, **Ling-flash-2.0** can match the performance of ~40B dense models. Thanks to its small activation size, it also delivers major inference speed advantages:
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- On **H20 hardware**, Ling-flash-2.0 achieves **200+ tokens/s**, offering **3Γ speedups** compared to 36B dense models in everyday use.
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- With **YaRN extrapolation**, it supports **128K context length**, and as output length grows, its relative speedup can reach **7Γ or more**.
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<p align="center">
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/oR9UTY7S0QgAAAAAgKAAAAgADkZ7AQFr/original"/>
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<img src="https://mdn.alipayobjects.com/huamei_fi95qp/afts/img/Hid1RrgsCUAAAAAAQYAAAAgADkZ7AQFr/fmt.webp"/>
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<p>
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## Model Downloads
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You can download the following table to see the various stage of Ling-flash-2.0 models. If you are located in mainland China, we also provide the model on ModelScope.cn to speed up the download process.
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<center>
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| **Model** | **Context Length** | **Download** |
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| :-----------------: | :----------------: | :------------------------------------------------------------------------------------------------------------------------------------------------------------: |
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| Ling-flash-base-2.0 | 32K -> 128K (YaRN) | [π€ HuggingFace](https://huggingface.co/inclusionAI/Ling-flash-base-2.0) <br>[π€ ModelScope](https://www.modelscope.cn/models/inclusionAI/Ling-flash-base-2.0) |
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| Ling-flash-2.0 | 32K -> 128K (YaRN) | [π€ HuggingFace](https://huggingface.co/inclusionAI/Ling-flash-2.0) <br>[π€ ModelScope](https://www.modelscope.cn/models/inclusionAI/Ling-flash-2.0) |
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</center>
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Note: If you are interested in previous version, please visit the past model collections in [Huggingface](https://huggingface.co/inclusionAI) or [ModelScope](https://modelscope.cn/organization/inclusionAI).
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## Quickstart
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### π Try Online
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You can experience Ling-flash-2.0 online at: [ZenMux](https://zenmux.ai/inclusionai/ling-flash-2.0)
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### π API Usage
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You can also use Ling-flash-2.0 through API calls:
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```python
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from openai import OpenAI
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# 1. Initialize the OpenAI client
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client = OpenAI(
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# 2. Point the base URL to the ZenMux endpoint
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base_url="https://zenmux.ai/api/v1",
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# 3. Replace with the API Key from your ZenMux user console
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api_key="<your ZENMUX_API_KEY>",
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)
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# 4. Make a request
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completion = client.chat.completions.create(
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# 5. Specify the model to use in the format "provider/model-name"
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model="inclusionai/ling-flash-2.0",
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messages=[
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{
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"role": "user",
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"content": "What is the meaning of life?"
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}
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]
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)
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print(completion.choices[0].message.content)
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```
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### π€ Hugging Face Transformers
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Here is a code snippet to show you how to use the chat model with `transformers`:
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```
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To handle long context in vLLM using YaRN, we need to follow these two steps:
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+
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1. Add a `rope_scaling` field to the model's `config.json` file, for example:
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```json
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{
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...,
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}
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}
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```
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+
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2. Use an additional parameter `--max-model-len` to specify the desired maximum context length when starting the vLLM service.
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For detailed guidance, please refer to the vLLM [`instructions`](https://docs.vllm.ai/en/latest/).
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### SGLang
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#### Environment Preparation
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We will later submit our model to SGLang official release, now we can prepare the environment following steps:
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```shell
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pip3 install sglang==0.5.2rc0 sgl-kernel==0.3.7.post1
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```
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You can use docker image as well:
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```shell
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docker pull lmsysorg/sglang:v0.5.2rc0-cu126
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```
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+
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Then you should apply patch to sglang installation:
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```shell
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# patch command is needed, run `yum install -y patch` if needed
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patch -d `python -c 'import sglang;import os; print(os.path.dirname(sglang.__file__))'` -p3 < inference/sglang/bailing_moe_v2.patch
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#### Run Inference
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BF16 and FP8 models are supported by SGLang now, it depends on the dtype of the model in ${MODEL_PATH}. They both share the same command in the following:
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- Start server:
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```shell
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python -m sglang.launch_server \
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--model-path $MODLE_PATH \
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--trust-remote-code \
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--attention-backend fa3
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```
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+
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MTP is supported for base model, and not yet for chat model. You can add parameter `--speculative-algorithm NEXTN`
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to start command.
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More usage can be found [here](https://docs.sglang.ai/basic_usage/send_request.html)
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### Finetuning
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We recommend you to use [Llama-Factory](https://github.com/hiyouga/LLaMA-Factory) to [finetune Ling](https://github.com/inclusionAI/Ling-V2/blob/main/docs/llamafactory_finetuning.md).
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## License
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This code repository is licensed under [the MIT License](https://github.com/inclusionAI/Ling-V2/blob/master/LICENCE).
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