Model reference · open weights

Ling-lite-1.5

LLMs inclusionAI Text gen 1 build Open weights 10k dl/mo

Ling-lite-1.5 is an open-weight language model from inclusionAI. Ling-lite-1.5 (BF16) weighs 33.6 GB; the smallest configuration that runs it is L40S 48 GB.

  • Ling-lite-1.5 is a 16.8B parameter Mixture-of-Experts language model developed by inclusionAI for text generation tasks.
  • It features 2.75B activated parameters and supports a 128K token context window.
  • The model is released under the MIT license.

Summary of the inclusionAI/Ling-lite-1.5 model card, 2026-10-01

What it is

Released byinclusionAI
Released2025-05-11
Parameters16.8B
VRAM33.6 GB for the weights

What it runs on

Memory and cards for Ling-lite-1.5 (BF16)

33.6 GBweights, file size
57 MBcache per 1K tokens
1.2 GBruntime overhead, at least
32,768 tokenscontext max
CardRequests at onceContext maxMemory
8K each32K each
RTX 3060 12 GB … RTX 5090 32 GB
5 smaller cards
———
L40S 48 GB194all 32K44.0 GB
A100 80 GB9223all 32K78.2 GB
H100 80 GB8020all 32K78.1 GB
RTX PRO 6000 Blackwell 96 GB11428all 32K93.8 GB
DGX Spark (GB10) 128 GB unified14235all 32K107 GB
H200 141 GB20852all 32K138 GB
B200 180 GB28471all 32K176 GB
2× RTX 4090 24 GB
tensor parallel
225all 32K23.4 GB a card
2× RTX 3090 24 GB
tensor parallel
235all 32K23.4 GB a card
2× RTX 5090 32 GB
tensor parallel
5513all 32K31.0 GB a card
Memory needed at each load
Requests at once8K tokens each32K tokens each
135.3 GB36.7 GB
537.1 GB44.2 GB
838.5 GB49.8 GB
1642.3 GB64.9 GB
3249.8 GB94.9 GB
6464.9 GB155 GB

One card, with vLLM's small-card settings.

From the model card

What inclusionAI says about Ling-lite-1.5

Read the model card

Paper

Introduction

Ling is a MoE LLM provided and open-sourced by InclusionAI. We introduce two different sizes, which are Ling-lite and Ling-plus. Ling-lite has 16.8 billion parameters with 2.75 billion activated parameters, while Ling-plus has 290 billion parameters with 28.8 billion activated parameters. Both models demonstrate impressive performance compared to existing models in the industry.

Their structure makes it easy to scale up and down and adapt to different tasks, so users can use these models for a wide range of tasks, from processing natural language to solving complex problems. Furthermore, the open-source nature of Ling promotes collaboration and innovation within the AI community, fostering a diverse range of use cases and enhancements.

As more developers and researchers engage with the platform, we can expect rapid advancements and improvements, leading to even more sophisticated applications. This collaborative approach accelerates development and ensures that the models remain at the forefront of technology, addressing emerging challenges in various fields.

Model Downloads

You can download the following table to see the various parameters for your use case. If you are located in mainland China, we also provide the model on ModelScope.cn to speed up the download process.

Model#Total Params#Activated ParamsContext LengthDownload
Ling-lite-base-1.516.8B2.75B128K🤗 HuggingFace
Ling-lite-1.516.8B2.75B128K🤗 HuggingFace

Evaluation

Benchmark#shotsLing-lite-1.5Ling-liteQwen3-4B-InstructQwen3-8B-InstructMoonlight-16B-A3B-InstructLLaMA3.1-8B
MMLU(EM)574.3371.2770.0975.9770.7468.67
GPQA(Pass@1)036.5529.7340.447.1019.5127.59
HumanEval(Pass@1)087.2784.3881.9485.2972.9467.23
LiveCodeBench 2408-2502 (Pass@1)022.718.9421.826.8814.7618.41
LCBench(pass@1)060.3746.5748.6160.0328.3923.13
Math(EM)082.6272.8081.4682.7067.152.42
AIME2024(pass@1)021.8810.2120.6226.256.887.29
OlympiadBench(pass@1)052.3036.4454.3356.1132.8517.04
BBH(EM)075.7566.3878.2179.3363.4568.05
IFEval(Prompt Strict)077.7077.9981.0683.5549.0173.01
BFCL_live072.1567.9365.3569.8347.1449.98
Context Window

Evaluation results on the Needle In A Haystack (NIAH) tests. Ling-Lite-1.5 has improved long text generation capability and performs well across most context window lengths up to 128K.

Quickstart

🤗 Hugging Face Transformers

Here is a code snippet to show you how to use the chat model with transformers:

from transformers import AutoModelForCausalLM, AutoTokenizer

model_name = "inclusionAI/Ling-lite-1.5"

model = AutoModelForCausalLM.from_pretrained(
    model_name,
    torch_dtype="auto",
    device_map="auto"
)
tokenizer = AutoTokenizer.from_pretrained(model_name)

prompt = "Give me a short introduction to large language models."
messages = [
    {"role": "system", "content": "You are Ling, an assistant created by inclusionAI"},
    {"role": "user", "content": prompt}
]
text = tokenizer.apply_chat_template(
    messages,
    tokenize=False,
    add_generation_prompt=True
)
model_inputs = tokenizer([text], return_tensors="pt").to(model.device)

generated_ids = model.generate(
    **model_inputs,
    max_new_tokens=512
)
generated_ids = [
    output_ids[len(input_ids):] for input_ids, output_ids in zip(model_inputs.input_ids, generated_ids)
]

response = tokenizer.batch_decode(generated_ids, skip_special_tokens=True)[0]

Deployment

Please refer to Github

License

This code repository is licensed under the MIT License.

Citation

If you find our work helpful, feel free to give us a cite.

@article{ling,
    title   = {Every FLOP Counts: Scaling a 300B Mixture-of-Experts LING LLM without Premium GPUs},
    author  = {Ling Team},
    journal = {arXiv preprint arXiv:2503.05139},
    year    = {2025}
}

Quoted from the model card on Hugging Face. The full card is behind the Hugging Face link above.

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