Unable to install nexaai sdk

[nootums]

Pre-checks

• I searched existing issues
• I’m using the latest NexaSDK release

What happened?

I have a Thinkpad T14s running the snapdragon X Elite chip. I wanted to run some LLMs locally. But when I try to install nexaai, I get a 403 error. 

Here's the error log:

(QAI_VENV_3.10) PS C:\Users\***\qai> pip install nexaai -i https://pypi.python.org/simple/
Looking in indexes: https://pypi.python.org/simple/
Collecting nexaai
  Using cached nexaai-1.0.44.tar.gz (74 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: huggingface_hub in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from nexaai) (0.36.2)
Requirement already satisfied: filelock in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from nexaai) (3.29.0)
Requirement already satisfied: fsspec>=2023.5.0 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (2026.3.0)
Requirement already satisfied: packaging>=20.9 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (26.1)
Requirement already satisfied: pyyaml>=5.1 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (6.0.3)
Requirement already satisfied: requests in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (2.33.1)
Requirement already satisfied: tqdm>=4.42.1 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (4.67.3)
Requirement already satisfied: typing-extensions>=3.7.4.3 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (4.15.0)
Requirement already satisfied: colorama in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from tqdm>=4.42.1->huggingface_hub->nexaai) (0.4.6)
Requirement already satisfied: charset_normalizer<4,>=2 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (3.4.7)
Requirement already satisfied: idna<4,>=2.5 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (3.13)
Requirement already satisfied: urllib3<3,>=1.26 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (2.6.3)
Requirement already satisfied: certifi>=2023.5.7 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (2026.4.22)
Building wheels for collected packages: nexaai
  Building wheel for nexaai (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for nexaai (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]
      running bdist_wheel
      running build
      running build_py
      Downloading https://nexa-model-hub-bucket.s3.us-west-1.amazonaws.com/public/nexasdk/v1.0.44/windows_x86_64/nexasdk-bridge.zip...
      ERROR: Failed to download binaries: HTTP Error 403: Forbidden
      error: HTTP Error 403: Forbidden
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for nexaai
Failed to build nexaai
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> nexaai


If I'm on an arm64 chip, why is pip downloading an x86_64 zip from the S3?

Steps to reproduce

python 3.10 running on snapdragon X Elite on Windows 11
run `pip install nexaai`

Logs & stack traces

(QAI_VENV_3.10) PS C:\Users\***\qai> pip install nexaai -i https://pypi.python.org/simple/
Looking in indexes: https://pypi.python.org/simple/
Collecting nexaai
  Using cached nexaai-1.0.44.tar.gz (74 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: huggingface_hub in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from nexaai) (0.36.2)
Requirement already satisfied: filelock in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from nexaai) (3.29.0)
Requirement already satisfied: fsspec>=2023.5.0 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (2026.3.0)
Requirement already satisfied: packaging>=20.9 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (26.1)
Requirement already satisfied: pyyaml>=5.1 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (6.0.3)
Requirement already satisfied: requests in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (2.33.1)
Requirement already satisfied: tqdm>=4.42.1 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (4.67.3)
Requirement already satisfied: typing-extensions>=3.7.4.3 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from huggingface_hub->nexaai) (4.15.0)
Requirement already satisfied: colorama in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from tqdm>=4.42.1->huggingface_hub->nexaai) (0.4.6)
Requirement already satisfied: charset_normalizer<4,>=2 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (3.4.7)
Requirement already satisfied: idna<4,>=2.5 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (3.13)
Requirement already satisfied: urllib3<3,>=1.26 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (2.6.3)
Requirement already satisfied: certifi>=2023.5.7 in c:\users\aditsha\qai\qai_venv_3.10\lib\site-packages (from requests->huggingface_hub->nexaai) (2026.4.22)
Building wheels for collected packages: nexaai
  Building wheel for nexaai (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for nexaai (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [6 lines of output]
      running bdist_wheel
      running build
      running build_py
      Downloading https://nexa-model-hub-bucket.s3.us-west-1.amazonaws.com/public/nexasdk/v1.0.44/windows_x86_64/nexasdk-bridge.zip...
      ERROR: Failed to download binaries: HTTP Error 403: Forbidden
      error: HTTP Error 403: Forbidden
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for nexaai
Failed to build nexaai
error: failed-wheel-build-for-install

× Failed to build installable wheels for some pyproject.toml based projects
╰─> nexaai

Model(s) and quantization

NexaSDK version

latest

Install method

pip

OS and version

Windows 11

Hardware / accelerator

Snapdragon X Elite NPU

Additional context

[mvx-team]

Download links to all Nexa files seem to be down.

As for running Python x64 on Windows on Snapdragon, it's because Python ARM64 has a lot of missing dependencies. Qualcomm's HTP demos on Python all require running Python x64.

[nootums]

Hi, thanks for your response.

Do you have any rough estimate on when the download files will be available to download? Or if there's a workaround to install and test things out on the snapdragon NPU?

[iwr-redmond]

Nexa AI has been acquired by Qualcomm and is yet to open-source the Nexa Bridge component (#1064 (comment)).

For basic use cases, you can download the Nexa CLI here. Alternativey, you may wish to consider the XLlamaCPP Vulkan build. This supports most GPUs and NPUs out of the box.

[endang-kj]

I'm checking the comments on issue 1069.

[mvx-team]

Unfortunately the download links given by iwr-redmond aren't working. They fail with an "Access Denied" error.

[iwr-redmond]

Try https://github.com/NexaAI/nexa-sdk/releases/tag/v0.2.73