[PR #10373] [MERGED] feat: logit bias #38143

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GiteaMirror · 2026-04-25T11:17:21-05:00

GiteaMirror commented

2026-04-25 11:17:21 -05:00

📋 Pull Request Information

Original PR: https://github.com/open-webui/open-webui/pull/10373
Author: @dannyl1u
Created: 2/19/2025
Status: ✅ Merged
Merged: 3/1/2025
Merged by: @tjbck

Base: dev ← Head: logit_bias

📝 Commits (8)

4a2a12f feat: scaffolding for logit_bias
8aa6415 include logit_bias in form_data
046f1fb Merge pull request #10927 from open-webui/dev
95cadac Merge pull request #10933 from open-webui/dev
34e3cb6 logit bias: update tooltip message
90aa295 logit_bias: handle comma seperated values
f4bd094 Merge remote-tracking branch 'origin' into logit_bias
f9292ab Merge branch 'dev' into logit_bias

📊 Changes

5 files changed (+66 additions, -0 deletions)

View changed files

📝 backend/open_webui/utils/middleware.py (+6 -0)
📝 backend/open_webui/utils/misc.py (+12 -0)
📝 backend/open_webui/utils/payload.py (+1 -0)
📝 src/lib/components/chat/Settings/Advanced/AdvancedParams.svelte (+44 -0)
📝 src/lib/components/chat/Settings/General.svelte (+3 -0)

📄 Description

Pull Request Checklist

Note to first-time contributors: Please open a discussion post in Discussions and describe your changes before submitting a pull request.

Before submitting, make sure you've checked the following:

Target branch: Please verify that the pull request targets the dev branch.
Description: Provide a concise description of the changes made in this pull request.
Changelog: Ensure a changelog entry following the format of Keep a Changelog is added at the bottom of the PR description.
Documentation: Have you updated relevant documentation Open WebUI Docs, or other documentation sources?
Dependencies: Are there any new dependencies? Have you updated the dependency versions in the documentation?
Testing: Have you written and run sufficient tests for validating the changes?
Code review: Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards?
Prefix: To cleary categorize this pull request, prefix the pull request title, using one of the following:
- BREAKING CHANGE: Significant changes that may affect compatibility
- build: Changes that affect the build system or external dependencies
- ci: Changes to our continuous integration processes or workflows
- chore: Refactor, cleanup, or other non-functional code changes
- docs: Documentation update or addition
- feat: Introduces a new feature or enhancement to the codebase
- fix: Bug fix or error correction
- i18n: Internationalization or localization changes
- perf: Performance improvement
- refactor: Code restructuring for better maintainability, readability, or scalability
- style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.)
- test: Adding missing tests or correcting existing tests
- WIP: Work in progress, a temporary label for incomplete or ongoing work

Changelog Entry

Description

adds logit bias parameter for token-level generation bias (closes #9280)

Added

Introduced a logit bias parameter which users can utilize to apply biases to specific tokens during text generation through comma separated token:bias pairs in Advanced Parameters

Changed

n/a

Deprecated

n/a

Removed

n/a

Fixed

n/a

Security

n/a

Breaking Changes

n/a

Additional Information

I implemented this by accepting comma separated token:bias pairs as suggested in #9280 . This approach allows for easy copy-pasting and doesn't take up too much vertical space.

I also considered the following implementations:

separating token and bias into separate input boxes side by side, each pair on a new row

visually appealing, user friendly
supporting copy-paste would require further development efforts
takes up more vertical space, would need to scroll longer to find other settings in Advanced Parameters

accepting raw JSON

easy to implement
less user friendly

Tested with OpenAI APIs.

Screenshots or Videos

Demo video (apologies for not using OLED dark theme (the best))

https://github.com/user-attachments/assets/c6876936-cf15-4112-addc-fdeeb82e41f3

_{🔄 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/10373 **Author:** [@dannyl1u](https://github.com/dannyl1u) **Created:** 2/19/2025 **Status:** ✅ Merged **Merged:** 3/1/2025 **Merged by:** [@tjbck](https://github.com/tjbck) **Base:** `dev` ← **Head:** `logit_bias` --- ### 📝 Commits (8) - [`4a2a12f`](https://github.com/open-webui/open-webui/commit/4a2a12fd21c15f1671f82315b7897a0f9af4f6f3) feat: scaffolding for logit_bias - [`8aa6415`](https://github.com/open-webui/open-webui/commit/8aa6415500bd2b7213aa1b655cbe386fb5457810) include logit_bias in form_data - [`046f1fb`](https://github.com/open-webui/open-webui/commit/046f1fb30ace13b81dea846629841c86fa97aa46) Merge pull request #10927 from open-webui/dev - [`95cadac`](https://github.com/open-webui/open-webui/commit/95cadaca72e676199caf894f40cc132d7c8416df) Merge pull request #10933 from open-webui/dev - [`34e3cb6`](https://github.com/open-webui/open-webui/commit/34e3cb688147a1143963a120017d6e98292ce121) logit bias: update tooltip message - [`90aa295`](https://github.com/open-webui/open-webui/commit/90aa29528c0360dc0a93a4c9c6ccc64d5d1b3102) logit_bias: handle comma seperated values - [`f4bd094`](https://github.com/open-webui/open-webui/commit/f4bd09412887a99d5c3fd25fddfb4918aa82a1a9) Merge remote-tracking branch 'origin' into logit_bias - [`f9292ab`](https://github.com/open-webui/open-webui/commit/f9292ab4d2f72c7b87517fdf78fee5595f0f919d) Merge branch 'dev' into logit_bias ### 📊 Changes **5 files changed** (+66 additions, -0 deletions) <details> <summary>View changed files</summary> 📝 `backend/open_webui/utils/middleware.py` (+6 -0) 📝 `backend/open_webui/utils/misc.py` (+12 -0) 📝 `backend/open_webui/utils/payload.py` (+1 -0) 📝 `src/lib/components/chat/Settings/Advanced/AdvancedParams.svelte` (+44 -0) 📝 `src/lib/components/chat/Settings/General.svelte` (+3 -0) </details> ### 📄 Description # Pull Request Checklist ### Note to first-time contributors: Please open a discussion post in [Discussions](https://github.com/open-webui/open-webui/discussions) and describe your changes before submitting a pull request. **Before submitting, make sure you've checked the following:** - [x] **Target branch:** Please verify that the pull request targets the `dev` branch. - [x] **Description:** Provide a concise description of the changes made in this pull request. - [x] **Changelog:** Ensure a changelog entry following the format of [Keep a Changelog](https://keepachangelog.com/) is added at the bottom of the PR description. - [x] **Documentation:** Have you updated relevant documentation [Open WebUI Docs](https://github.com/open-webui/docs), or other documentation sources? - [x] **Dependencies:** Are there any new dependencies? Have you updated the dependency versions in the documentation? - [x] **Testing:** Have you written and run sufficient tests for validating the changes? - [x] **Code review:** Have you performed a self-review of your code, addressing any coding standard issues and ensuring adherence to the project's coding standards? - [x] **Prefix:** To cleary categorize this pull request, prefix the pull request title, using one of the following: - **BREAKING CHANGE**: Significant changes that may affect compatibility - **build**: Changes that affect the build system or external dependencies - **ci**: Changes to our continuous integration processes or workflows - **chore**: Refactor, cleanup, or other non-functional code changes - **docs**: Documentation update or addition - **feat**: Introduces a new feature or enhancement to the codebase - **fix**: Bug fix or error correction - **i18n**: Internationalization or localization changes - **perf**: Performance improvement - **refactor**: Code restructuring for better maintainability, readability, or scalability - **style**: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc.) - **test**: Adding missing tests or correcting existing tests - **WIP**: Work in progress, a temporary label for incomplete or ongoing work # Changelog Entry ### Description - adds logit bias parameter for token-level generation bias (closes #9280) ### Added - Introduced a logit bias parameter which users can utilize to apply biases to specific tokens during text generation through comma separated token:bias pairs in Advanced Parameters ### Changed - n/a ### Deprecated - n/a ### Removed - n/a ### Fixed - n/a ### Security - n/a ### Breaking Changes - n/a --- ### Additional Information I implemented this by accepting comma separated token:bias pairs as suggested in #9280 . This approach allows for easy copy-pasting and doesn't take up too much vertical space. I also considered the following implementations: 1. separating token and bias into separate input boxes side by side, each pair on a new row - visually appealing, user friendly - supporting copy-paste would require further development efforts - takes up more vertical space, would need to scroll longer to find other settings in Advanced Parameters 2. accepting raw JSON - easy to implement - less user friendly Tested with OpenAI APIs. ### Screenshots or Videos Demo video (apologies for not using OLED dark theme (the best)) https://github.com/user-attachments/assets/c6876936-cf15-4112-addc-fdeeb82e41f3 --- <sub>🔄 This issue represents a GitHub Pull Request. It cannot be merged through Gitea due to API limitations.</sub>

GiteaMirror added the pull-request label 2026-04-25 11:17:21 -05:00

GiteaMirror closed this issue

2026-04-25 11:17:22 -05:00

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Reference: github-starred/open-webui#38143