> For the complete documentation index, see [llms.txt](https://dev.ubidots.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.ubidots.com/ubifunctions/runtimes.md).

# Runtimes

Ubidots supports the following runtimes:

* [Python](/ubifunctions/runtimes/python.md)
* [NodeJS](/ubifunctions/runtimes/nodejs.md)
* [Custom Runtimes](/ubifunctions/runtimes/custom-runtimes.md)

## Runtime versions

Ubidots supports the following runtime versions:

| Language | Versions              |
| -------- | --------------------- |
| Python   | 3.9, 3.11, 3.13, 3.14 |
| Node.js  | 20, 22, 24            |

New UbiFunctions use **Python 3.14 Base** by default.

## Layers

Each runtime version is offered in one or more layers. Each layer includes a specific set of libraries and capabilities.

* **Lite:** The lightest option. It offers a minimal environment that is fast and efficient.
* **Base:** A step up from `Lite`. It includes more libraries for broader functionality.
* **Full:** The most complete general-purpose option. It is available only for Python runtimes on Enterprise licenses or above.
* **ML Inference:** Runs pre-trained machine learning models (TensorFlow Lite and ONNX). Python only.
* **ML Classical:** Trains and runs classical machine learning and statistical models in the function itself (scikit-learn, statsmodels). Python only.

{% hint style="info" %}
The ML runtimes are enabled per account. To enable them, [reach out to our support team](https://help.ubidots.com/en/articles/4683984-need-support-find-ubidots-in-app-chat-channel).
{% endhint %}

The following table shows which layers are available for each runtime version:

| Runtime     | Lite | Base | Full | ML Inference | ML Classical |
| ----------- | :--: | :--: | :--: | :----------: | :----------: |
| Python 3.9  |   ✓  |   ✓  |   ✓  |              |              |
| Python 3.11 |   ✓  |   ✓  |   ✓  |       ✓      |              |
| Python 3.13 |   ✓  |   ✓  |   ✓  |              |              |
| Python 3.14 |   ✓  |   ✓  |      |       ✓      |       ✓      |
| Node.js 20  |   ✓  |   ✓  |      |              |              |
| Node.js 22  |   ✓  |   ✓  |      |              |              |
| Node.js 24  |   ✓  |   ✓  |      |              |              |


---

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