The DEFAULT_MODEL_PARAMS environment variable was being ignored due to a hardcoded empty dictionary {} being passed as the default value to PersistentConfig. This fix adds proper JSON parsing of the DEFAULT_MODEL_PARAMS environment variable, following the same pattern used by similar configurations like TOOL_SERVER_CONNECTIONS and TERMINAL_SERVER_CONNECTIONS.
Fixed
Fixed DEFAULT_MODEL_PARAMS environment variable being ignored - the value is now properly parsed from JSON and passed to PersistentConfig
By submitting this pull request, I confirm that I have read and fully agree to the Contributor License Agreement (CLA), and I am providing my contributions under its terms.
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.
## 📋 Pull Request Information
**Original PR:** https://github.com/open-webui/open-webui/pull/23223
**Author:** [@dkhachyan](https://github.com/dkhachyan)
**Created:** 3/30/2026
**Status:** ✅ Merged
**Merged:** 4/1/2026
**Merged by:** [@tjbck](https://github.com/tjbck)
**Base:** `dev` ← **Head:** `default-model-params-env-dev`
---
### 📝 Commits (1)
- [`4117837`](https://github.com/open-webui/open-webui/commit/41178376dbaa4e9e8961796a0f51412b9927e565) feat(config): add environment variable support for DEFAULT_MODEL_PARAMS
### 📊 Changes
**1 file changed** (+7 additions, -1 deletions)
<details>
<summary>View changed files</summary>
📝 `backend/open_webui/config.py` (+7 -1)
</details>
### 📄 Description
## Pull Request Description
**Title:** `fix: DEFAULT_MODEL_PARAMS environment variable ignored`
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# Changelog Entry
### Description
The `DEFAULT_MODEL_PARAMS` environment variable was being ignored due to a hardcoded empty dictionary `{}` being passed as the default value to `PersistentConfig`. This fix adds proper JSON parsing of the `DEFAULT_MODEL_PARAMS` environment variable, following the same pattern used by similar configurations like `TOOL_SERVER_CONNECTIONS` and `TERMINAL_SERVER_CONNECTIONS`.
### Fixed
- Fixed `DEFAULT_MODEL_PARAMS` environment variable being ignored - the value is now properly parsed from JSON and passed to `PersistentConfig`
---
### Additional Information
https://github.com/open-webui/open-webui/discussions/21839
**Usage example:**
```bash
export DEFAULT_MODEL_PARAMS='{"temperature": 0.7, "max_tokens": 2048}'
```
### Contributor License Agreement
- [x] By submitting this pull request, I confirm that I have read and fully agree to the [Contributor License Agreement (CLA)](https://github.com/open-webui/open-webui/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT), and I am providing my contributions under its terms.
---
<sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>
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📋 Pull Request Information
Original PR: https://github.com/open-webui/open-webui/pull/23223
Author: @dkhachyan
Created: 3/30/2026
Status: ✅ Merged
Merged: 4/1/2026
Merged by: @tjbck
Base:
dev← Head:default-model-params-env-dev📝 Commits (1)
4117837feat(config): add environment variable support for DEFAULT_MODEL_PARAMS📊 Changes
1 file changed (+7 additions, -1 deletions)
View changed files
📝
backend/open_webui/config.py(+7 -1)📄 Description
Pull Request Description
Title:
fix: DEFAULT_MODEL_PARAMS environment variable ignoredChangelog Entry
Description
The
DEFAULT_MODEL_PARAMSenvironment variable was being ignored due to a hardcoded empty dictionary{}being passed as the default value toPersistentConfig. This fix adds proper JSON parsing of theDEFAULT_MODEL_PARAMSenvironment variable, following the same pattern used by similar configurations likeTOOL_SERVER_CONNECTIONSandTERMINAL_SERVER_CONNECTIONS.Fixed
DEFAULT_MODEL_PARAMSenvironment variable being ignored - the value is now properly parsed from JSON and passed toPersistentConfigAdditional Information
https://github.com/open-webui/open-webui/discussions/21839
Usage example:
Contributor License Agreement
🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.