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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

如何安装

您需要先安装一款用户脚本管理器扩展，例如 Tampermonkey 篡改猴、Greasemonkey 油猴子 或 Violentmonkey 暴力猴，才能安装此脚本。

您需要先安装一款用户脚本管理器扩展，例如 Tampermonkey 篡改猴，才能安装此脚本。

您需要先安装一款用户脚本管理器扩展，例如 Tampermonkey 篡改猴 或 Violentmonkey 暴力猴，才能安装此脚本。

您需要先安装一款用户脚本管理器扩展，例如 Tampermonkey 篡改猴 或 Userscripts ，才能安装此脚本。

您需要先安装一款用户脚本管理器扩展，例如 Tampermonkey 篡改猴，才能安装此脚本。

您需要先安装一款用户脚本管理器扩展后才能安装此脚本。

（我已经安装了用户脚本管理器，让我安装！）

如何安装

您需要先安装一款用户样式管理器扩展，比如 Stylus，才能安装此样式。

您需要先安装一款用户样式管理器扩展，比如 Stylus，才能安装此样式。

您需要先安装一款用户样式管理器扩展，比如 Stylus，才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

（我已经安装了用户样式管理器，让我安装！）

作者
piknockyou
日安装量
1
总安装量
2
评分
0 0 0
版本
1.43
创建于
2025-12-30
更新于
2025-12-30
大小
52.7 KB
许可证
AGPL-3.0
适用于

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.