# August 6, 2026 - ONNX block in Analytics Builder now requires file extension in model name

**URL:** <https://community.cumulocity.com/t/august-6-2026-onnx-block-in-analytics-builder-now-requires-file-extension-in-model-name/15088>\
**Category:** Analytics\
**Tags:** analytics, Api-change, streaming-analytics\
**Created:** [August 7, 2026, 7:31am UTC](https://community.cumulocity.com/t/august-6-2026-onnx-block-in-analytics-builder-now-requires-file-extension-in-model-name/15088 "2026-08-07T07:31:22Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![cumulocity](https://dub1.discourse-cdn.com/flex005/user_avatar/community.cumulocity.com/cumulocity/32/31990_2.png) [@cumulocity](https://community.cumulocity.com/u/cumulocity)\
**Post date:** [August 7, 2026, 7:31am UTC](https://community.cumulocity.com/t/august-6-2026-onnx-block-in-analytics-builder-now-requires-file-extension-in-model-name/15088/1 "2026-08-07T07:31:23Z")

</div>

## Context

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**Change Type:** API change  
**Product area:** Analytics  
**Component:** Streaming Analytics  
**Deployed at:** [eu.latest.cumulocity.com](http://eu.latest.cumulocity.com), [apj.cumulocity.com](http://apj.cumulocity.com), [jp.cumulocity.com](http://jp.cumulocity.com), [cumulocity.com](http://cumulocity.com), [us.cumulocity.com](http://us.cumulocity.com)

> **Technical details**
>
> **Build artifact:** apama-in-c8y (27.180.0)  
> **Internal ID:** PAB-5326

## Description

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The ONNX block (Public Preview) in Analytics Builder now supports models uploaded to the Cumulocity files repository as a standalone `.onnx` file. Previously, the block only supported models packaged inside a `.zip` archive.

The `ONNX model name` parameter must now include an explicit `.onnx` or `.zip` file extension:

- `<modelName>.onnx` looks for a standalone `<modelName>.onnx` file.
- `<modelName>.zip` extracts the archive and looks for `<modelName>.onnx` inside it.

Previously, `<modelName>`, `<modelName>.onnx`, and `<modelName>.zip` were always resolved by extracting a `<modelName>.zip` archive and looking for `<modelName>.onnx` inside.

> **Important**  
> This is a breaking change for existing models that omit the file extension, or that use a `.onnx` extension to extract a model from a `.zip` file uploaded to the files repository. To migrate, ensure the file extension used in your Analytics Builder model matches the type of file you have uploaded.