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Showing content from https://github.com/zai-org/GLM-4.5 below:

zai-org/GLM-4.5: GLM-4.5: An open-source large language model designed for intelligent agents by Z.ai

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📖 Check out the GLM-4.5 technical blog, technical report, and Zhipu AI technical documentation.
📍 Use GLM-4.5 API services on Z.ai API Platform (Global) or
Zhipu AI Open Platform (Mainland China).
👉 One click to GLM-4.5.

The GLM-4.5 series models are foundation models designed for intelligent agents. GLM-4.5 has 355 billion total parameters with 32 billion active parameters, while GLM-4.5-Air adopts a more compact design with 106 billion total parameters and 12 billion active parameters. GLM-4.5 models unify reasoning, coding, and intelligent agent capabilities to meet the complex demands of intelligent agent applications.

Both GLM-4.5 and GLM-4.5-Air are hybrid reasoning models that provide two modes: thinking mode for complex reasoning and tool usage, and non-thinking mode for immediate responses.

We have open-sourced the base models, hybrid reasoning models, and FP8 versions of the hybrid reasoning models for both GLM-4.5 and GLM-4.5-Air. They are released under the MIT open-source license and can be used commercially and for secondary development.

As demonstrated in our comprehensive evaluation across 12 industry-standard benchmarks, GLM-4.5 achieves exceptional performance with a score of 63.2, in the 3rd place among all the proprietary and open-source models. Notably, GLM-4.5-Air delivers competitive results at 59.8 while maintaining superior efficiency.

For more eval results, show cases, and technical details, please visit our technical report or technical blog.

The model code, tool parser and reasoning parser can be found in the implementation of transformers, vLLM and SGLang.

You can directly experience the model on Hugging Face or ModelScope or download the model by following the links below.

We provide minimum and recommended configurations for "full-featured" model inference. The data in the table below is based on the following conditions:

All models use MTP layers and specify --speculative-num-steps 3 --speculative-eagle-topk 1 --speculative-num-draft-tokens 4 to ensure competitive inference speed.
The cpu-offload parameter is not used.
Inference batch size does not exceed 8.
All are executed on devices that natively support FP8 inference, ensuring both weights and cache are in FP8 format.
Server memory must exceed 1T to ensure normal model loading and operation.

The models can run under the configurations in the table below:

Model Precision GPU Type and Count Test Framework GLM-4.5 BF16 H100 x 16 / H200 x 8 sglang GLM-4.5 FP8 H100 x 8 / H200 x 4 sglang GLM-4.5-Air BF16 H100 x 4 / H200 x 2 sglang GLM-4.5-Air FP8 H100 x 2 / H200 x 1 sglang

Under the configurations in the table below, the models can utilize their full 128K context length:

Model Precision GPU Type and Count Test Framework GLM-4.5 BF16 H100 x 32 / H200 x 16 sglang GLM-4.5 FP8 H100 x 16 / H200 x 8 sglang GLM-4.5-Air BF16 H100 x 8 / H200 x 4 sglang GLM-4.5-Air FP8 H100 x 4 / H200 x 2 sglang

if you are using AMD GPUs, Check here for AMD GPU deployment documentation.

The code can run under the configurations in the table below using Llama Factory:

Model GPU Type and Count Strategy Batch Size (per GPU) GLM-4.5 H100 x 16 Lora 1 GLM-4.5-Air H100 x 4 Lora 1

The code can run under the configurations in the table below using Swift:

Model GPU Type and Count Strategy Batch Size (per GPU) GLM-4.5 H20 (96GiB) x 16 Lora 1 GLM-4.5-Air H20 (96GiB) x 4 Lora 1 GLM-4.5 H20 (96GiB) x 128 SFT 1 GLM-4.5-Air H20 (96GiB) x 32 SFT 1 GLM-4.5 H20 (96GiB) x 128 RL 1 GLM-4.5-Air H20 (96GiB) x 32 RL 1

Please install the required packages according to requirements.txt.

pip install -r requirements.txt

Please refer to the trans_infer_cli.py code in the inference folder.

Both BF16 and FP8 can be started with the following code:

vllm serve zai-org/GLM-4.5-Air \
    --tensor-parallel-size 8 \
    --tool-call-parser glm45 \
    --reasoning-parser glm45 \
    --enable-auto-tool-choice \
    --served-model-name glm-4.5-air

If you're using 8x H100 GPUs and encounter insufficient memory when running the GLM-4.5 model, you'll need --cpu-offload-gb 16 (only applicable to vLLM).

If you encounter flash infer issues, use VLLM_ATTENTION_BACKEND=XFORMERS as a temporary replacement. You can also specify TORCH_CUDA_ARCH_LIST='9.0+PTX' to use flash infer (different GPUs have different TORCH_CUDA_ARCH_LIST values, please check accordingly).

BF16

python3 -m sglang.launch_server \
  --model-path zai-org/GLM-4.5-Air \
  --tp-size 8 \
  --tool-call-parser glm45  \
  --reasoning-parser glm45 \
  --speculative-algorithm EAGLE \
  --speculative-num-steps 3 \
  --speculative-eagle-topk 1 \
  --speculative-num-draft-tokens 4 \
  --mem-fraction-static 0.7 \
  --served-model-name glm-4.5-air \
  --host 0.0.0.0 \
  --port 8000

python3 -m sglang.launch_server \
  --model-path zai-org/GLM-4.5-Air-FP8 \
  --tp-size 4 \
  --tool-call-parser glm45  \
  --reasoning-parser glm45  \
  --speculative-algorithm EAGLE \
  --speculative-num-steps 3  \
  --speculative-eagle-topk 1  \
  --speculative-num-draft-tokens 4 \
  --mem-fraction-static 0.7 \
  --disable-shared-experts-fusion \
  --served-model-name glm-4.5-air-fp8 \
  --host 0.0.0.0 \
  --port 8000

Request Parameter Instructions

When using vLLM and SGLang, thinking mode is enabled by default when sending requests. If you want to disable the thinking switch, you need to add the extra_body={"chat_template_kwargs": {"enable_thinking": False}} parameter.
Both support tool calling. Please use OpenAI-style tool description format for calls.
For specific code, please refer to api_request.py in the inference folder.

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