Assistant

PaletteBrain

MacOS AI assistant — access ChatGPT anywhere via keyboard shortcut to rewrite, translate, and summarize text instantly

palettebrain.com

Verified

Quick facts
What is it	MacOS AI assistant — access ChatGPT anywhere via keyboard shortcut to rewrite, translate, and summarize text instantly
Pricing	Paid
Free tier	No
Platform	Desktop Application
Best for	fixing grammar and spelling across applications, translating text without switching windows
Domain registered	2004

Data updated Aug. 1, 2026

What does PaletteBrain do?

PaletteBrain is a macOS application that brings ChatGPT's capabilities directly into your workflow through keyboard shortcuts. Instead of constantly switching between browser tabs and applications, you can select text anywhere on your Mac and press Option+Space to activate a command palette of AI-powered actions. This lets you instantly rewrite, translate, summarize, or transform text without leaving your current application.

The tool stands out by offering complete customization of AI commands and models while avoiding subscription fees. You bring your own OpenAI API key, paying only for what you use directly to OpenAI rather than through middlemen. The application supports Microsoft Azure OpenAI integration for experimental models and provides granular control over model selection, creativity levels, and prompt engineering for each custom command.

PaletteBrain benefits macOS users who frequently work with text across multiple applications like Notion, Google Docs, Slack, and email clients. It's particularly valuable for writers editing drafts, professionals communicating across languages, and anyone seeking to reduce context-switching between their work and AI tools. The one-time purchase model makes it cost-effective compared to monthly subscriptions for similar functionality.

AI Workspace Assistant Productivity Tools Prompt Engineering Translate

#ai writing#custom commands#keyboard shortcut#macos app#openai integration#productivity#text processing

Key features

What makes it stand out

Global keyboard shortcut (⌥+Space) activates AI commands in any app

Create custom AI commands for specific tasks like grammar fixing or translation

Bring your own OpenAI API key for pay-as-you-go model access

Paste AI responses directly back into original applications

Works across all macOS apps including Notion, Slack, and Google Docs

Who is PaletteBrain for?

Who benefits most from this tool

fixing grammar and spelling across applications

translating text without switching windows

summarizing content directly in workflow

Pricing

PaletteBrain Lifetime License

Custom

Unlimited AI using your own OpenAI key
Runs in the background, no distractions
Run AI commands on any text you select
Create custom AI commands & bind em' to shortcuts
Private between your computer & OpenAI or Azure
Manage & keep all your conversations in one place
Delete conversations forever, no traces left
Actively maintained for a bug-free experience
Always up to date with the latest AI models

Trust & presence

Domain Domain registered 2004

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