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LMArena | Model Manager: Pin, Reorder & Persistent Auto-Select

Pin favorite models to the top of the model selection dropdown with persistent memory

如何安裝

您需要先安裝使用者腳本管理器擴展，如 Tampermonkey、Greasemonkey 或 Violentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能，如 Tampermonkey或 Violentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能，如 Tampermonkey或 Userscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展，比如 Tampermonkey，才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

（我已經安裝了使用者腳本管理器，讓我安裝！）

如何安裝

你需要先安裝一款使用者樣式管理器擴展，比如 Stylus，才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展，比如 Stylus，才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展，比如 Stylus，才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

（我已經安裝了使用者樣式管理器，讓我安裝！）

作者
piknockyou
今日安裝
1
安裝總數
2
評價
0 0 0
版本
1.43
建立日期
2025-12-30
更新日期
2025-12-30
尺寸
52.7 KB
授權條款
AGPL-3.0
腳本執行於

See screenshots at the bottom

LMArena | Model Manager: Pin, Reorder & Persistent Auto-Select

Upgrades LMArena’s model picker so you can pin favorite models to the top, drag-reorder pinned models, and automatically re-select your last used model (persistently), with separate memory per Chat / Search / Image / Code modes.

Why You Need This

Switching models in LMArena gets annoying fast:

  • Your go-to models get buried in a long dropdown.
  • You keep re-selecting the same model every time you open a new chat or navigate.
  • Different modalities need different “default” models (Chat vs Search vs Image vs Code).

This script makes the model picker feel like it has “favorites + a real default.”

Key Features

  • Pin Models to the Top: One-click pin icon on each model to keep favorites always at the top.
  • Drag to Reorder Pinned Models: Pinned models gain a subtle grip handle (on hover) for drag-and-drop reordering.
  • Mode-Aware Memory (Chat/Search/Image/Code):
    • Pins are stored separately per modality.
    • “Last selected model” is also stored per modality, so each mode can have its own default.
  • Persistent Auto-Select Last Model:
    • Adds an in-dropdown row: “Auto-select last chosen model” with a checkbox toggle.
    • When enabled, it automatically selects your saved model when appropriate.
  • No Dropdown Flash During Auto-Restore:
    • Uses a temporary invisible “mask” while it opens/selects/closes the dropdown so you don’t see it flicker.
  • Better Dropdown Usability:
    • Removes name truncation (so long model names stay readable).
    • Forces a high z-index and tall max-height so the menu is more usable.
  • SPA-Safe Selection Enforcement:
    • After navigation, it can briefly “enforce” your saved model if LMArena tries to overwrite it a moment later.

How to Use

Action Result
Open the model dropdown You’ll see pin + (for pinned) reorder controls on items
Click the pin icon Pin/unpin a model
Hover a pinned model, drag the grip Reorder pinned models
Toggle Auto-select last chosen model checkbox Enable/disable auto-restore for the current modality
Select a model normally Saves it as the “last selected” for this modality

Behavior Details

  • Pins are scoped by modality (e.g. Chat pins don’t affect Image pins).
  • Auto-restore is scoped by modality and defaults to enabled unless you turn it off for that mode.
  • If your saved model doesn’t exist in the current mode, auto-restore backs off instead of looping.

Performance Notes

  • Only “enhances” the UI when the Radix/cmdk dropdown is present, using MutationObserver + small debouncing.
  • Uses pointer-event drag (not HTML5 drag-and-drop) for a smoother reorder experience.
  • Caches mode/modality detection and invalidates it on SPA navigation.

Installation

  1. Install Violentmonkey / Tampermonkey.
  2. Install this userscript.
  3. Visit lmarena.ai and open the model picker.