AI Interface Userscripts

A collection of Tampermonkey userscripts that enhance Google AI Studio, Gemini, Claude.ai, and ChatGPT.

Script	Target	Purpose
ai-studio-enhancer.user.js	aistudio.google.com	Model+thinking preset buttons (Lite/F/FX/P/PX), temp chat, and silent model/thinking/search/system-prompt automation via URL params
gemini-enhancer.user.js	gemini.google.com	Model+thinking preset buttons (FL/F/FX/P/PX), temp chat toggle, custom keybindings
claude-enhancer.user.js	claude.ai	Model+effort+thinking preset buttons (S/SX/O/OX), thinking toggle, incognito toggle, custom keybindings
chatgpt-enhancer.user.js	chatgpt.com	Intelligence preset buttons (I/M/H), left-Cmd reasoning cycle, temporary chat, URL params, custom keybindings

This is intended for use with Tampermonkey, Greasemonkey, or other userscript managers in modern browsers.

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AI Studio (ai-studio-enhancer.user.js)

Adds combined model+thinking preset buttons and a temporary-chat toggle next to the Tools button under the prompt box, plus silent URL-param automation. Rewritten for the Gemini 3 redesign (level-based thinking; no temperature/budget slider).

Preset buttons (left, next to "Tools")

Button	Model family	Thinking
Lite	Flash-Lite	Minimal
F	Flash	Low
FX	Flash	High
P	Pro	Low
PX	Pro	High

Each preset selects the best available model of its family by version number — gemini-3.5-pro outranks gemini-3.1-pro, which outranks gemini-3.1-pro-preview — so newer models are picked automatically without editing the script. The active preset is highlighted to match the current model + thinking level.

Action buttons (right, near "Run")

• Grd — toggle Grounding with Google Search (highlighted when on).
• Temp — toggle Temporary Chat.
• Save — save the prompt.

Always-on / convenience behaviors

• Code execution is kept enabled (re-enabled whenever found off).
• The system prompt is only applied when it's currently empty — it never overwrites instructions you've set.
• After any action the cursor returns to the prompt box.

Installation

1. Install a userscript manager in your browser (Tampermonkey is recommended).
2. Create a new script and paste the contents of ai-studio-enhancer.user.js, or install directly from the script's downloadURL if hosted.
3. Enable the script and navigate to https://aistudio.google.com/prompts/.

Note: The script runs at document-idle and targets pages under https://aistudio.google.com/prompts/*.

URL parameters

Applied silently on a fresh /prompts/new_chat (or whenever ?model= is present):

• model — exact model id. Example: model=gemini-3.1-pro-preview. If omitted, defaults to the best Pro model.
• thinking — minimal | low | medium | high. Example: thinking=high.
• search — toggle Grounding with Google Search. Use 1/true/on or 0/false/off. (Legacy alias: grounding.)
• sp — system prompt (system instructions). URL-encode long text. If omitted, the embedded default system prompt is applied.

Example:

https://aistudio.google.com/prompts/new_chat?model=gemini-3.1-pro-preview&thinking=high&search=1

Customization

• Change the default model family or system prompt via the DEFAULT_SETTINGS object near the top of the script.
• Adjust the preset buttons via the PRESETS array.

Troubleshooting

• Console logs are prefixed with [AIStudio].
• If selectors break after an AI Studio UI update, the relevant ones live in the SELECTORS const at the top of the script.

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Gemini (gemini-enhancer.user.js)

Adds quick-access preset buttons, temp chat toggle, and saner keybindings to gemini.google.com.

Preset buttons

Button	Model	Thinking
FL	Flash-Lite	Extended
F	Flash	Standard
FX	Flash	Extended
P	Pro	Standard
PX	Pro	Extended

A Temp button toggles Temporary Chat.

Keybindings

• Cmd/Ctrl+Enter — send message
• Enter — newline

URL parameters

• ?model=flashlite|flash|pro — auto-select model
• ?thinking=standard|extended — auto-set thinking level
• ?temp=true — activate temporary chat

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Claude (claude-enhancer.user.js)

Adds quick-access preset buttons, thinking/incognito toggles, and saner keybindings to claude.ai. See claude-enhancer-README.md for full details.

Preset buttons (left of composer toolbar)

Button	Model	Effort	Thinking
S	Sonnet 4.6	Low	off
SM	Sonnet 4.6	Medium	off
SMX	Sonnet 4.6	Medium	on
SX	Sonnet 4.6	High	on
O	Opus 4.8	Medium	off
OX	Opus 4.8	Max	on

Toggle buttons (right of composer toolbar)

• T — toggle Thinking on/off
• Temp — toggle Incognito chat

Keybindings

• Cmd/Ctrl+Enter — send message
• Enter / Shift+Enter — newline

URL parameters

• ?model=opus|sonnet|haiku|fable
• ?effort=low|medium|high|max
• ?thinking=on|off
• ?incognito=1

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ChatGPT (chatgpt-enhancer.user.js)

Adds quick-access intelligence preset buttons, left-Cmd reasoning cycling, a Temporary Chat toggle, URL-param automation, auto-focus, and saner keybindings to chatgpt.com.

Preset buttons

Button	Target
I	Instant
M	Medium
H	High

The active preset is highlighted when ChatGPT's visible picker label can be read.

Controls

• Temp — toggle Temporary Chat.
• Double-press left Cmd — cycle one step through Instant / Medium / High.
• Triple-press left Cmd — skip two steps through Instant / Medium / High.

Keybindings

• Cmd/Ctrl+Enter — send message
• Enter — newline

URL parameters

• ?model=instant|medium|high
• ?thinking=medium|high
• ?temp=1

Troubleshooting

• Console logs are prefixed with [ChatGPT].
• ChatGPT's menu ids are generated per render. If the script stops finding the picker or menu rows after a UI update, re-inspect the composer intelligence picker and update the centralized SELECTORS const.

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Video (video-enhancer.user.js)

A universal video speed controller that bypasses iframes, shadow DOMs, and custom players.

Controls

• . — Increase video speed by 0.25x
• ç — Decrease video speed by 0.25x

Features

• Bypasses cross-origin iframe restrictions (works in embedded players).
• Deep searches Shadow DOMs to find hidden <video> tags (e.g., Twitter, Reddit).
• Shows a brief, centered speed indicator overlay when speed changes.

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License

Distributed under the LICENSE file in the repository root.