Fluent
Fluent · Other
Fluent is a native Mac AI tool that puts ChatGPT, Claude, Gemini and 500+ other models inside whatever app you're already using. Instead of copying text into a browser tab, you select it, hit a shortcut, and the Smart Panel handles rewriting, tone edits, translation, or a full chat with the document in front of you. It runs as a real Mac app rather than a web wrapper, which is why long-time users describe it as the closest thing to what Apple Intelligence should have been.
About Fluent
What Is Fluent
Fluent is an AI writing assistant built specifically for macOS, and it rides along with your Mac the whole day, dropping into Mail, Notes, Slack, Notion, Word, or honestly anything with a text field. You highlight a sentence, call the assistant, and it reads the surrounding app context so its suggestions match what you're actually doing. That context is the part most browser-based AI tools miss. It changes the result.
The pitch is simple: one AI assistant for Mac apps, every app. You can rewrite for tone, fix grammar, shorten a draft, chat with a whole document, or compare answers from two different models side by side. Under the hood, Fluent connects to 500+ models, and you can bring your own AI model by pasting in a key, logging into services like OpenRouter, or running local models when you don't want your text leaving the machine.
The main catch is that it's Mac only. There's no Windows or iPhone version, and it's a paid app with no permanent free tier. It's also not magic on bad prompts. Give it a vague instruction and you'll get a vague result, same as any other model-driven tool.
Getting Started
- Download Fluent from the official website and drag it into your Applications folder.
- Open the app and grant the permissions it asks for, mainly Accessibility, so it can read and edit text in other apps.
- Connect at least one AI model by signing into a provider, pasting an API key, or pointing Fluent at a local model.
- Assign the actions you use most to keyboard shortcuts, then test one inside a real app like Mail or Notes.
- Select text in any app, fire the shortcut, and start editing from the Smart Panel.
Product Information
A quick look at Fluent's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- Writers and editors
- Students
- Non-native English speakers
- Developers and tinkerers
Tasks
- Rewriting an email for a friendlier tone
- Summarizing a long document or PDF
- Fixing grammar and spelling in a report
- Translating a message
Scenarios
- Answering a backlog of work messages
- Late-night editing sessions
- Private document work
- Comparing model output
Key features
Works Inside Any Mac App
Fluent isn't a standalone editor. It attaches to the apps you already use, from Mail and Notes to Slack, Notion, and Word. You select text, trigger the assistant, and the changes land right where you're working. No export, no copy-paste dance. It just shows up.
Smart Panel with App Context
The Smart Panel is the floating window that appears over whatever you're doing. It reads the surrounding context, so its rewrites account for the message you're replying to or the document you're editing, which is the difference between a generic rewrite and one that actually fits the moment.
500+ AI Models and Bring Your Own Key
You're not locked to one provider. Fluent connects to ChatGPT, Claude, Gemini, and hundreds more, and you can plug in your own API keys or route through OpenRouter. Prefer to keep things offline? Local models are supported too, which matters if your text is sensitive and you'd rather it never touch a third-party server at all.
Chat with Documents and Follow-Ups
Beyond quick edits, Fluent can hold a conversation with a document. Load a long file, ask questions, and keep following up without losing the thread. Comparing responses from different models is built in, so you can sanity-check an answer before trusting it. Useful when the stakes are high.
Formatting and Tone Controls
The assistant preserves your original formatting when it edits, so bold text, lists, and structure all survive the pass, and tone actions let you make something more formal, warmer, or shorter without rewriting it by hand.
Custom Shortcuts for Frequent Actions
You can bind the actions you use most to keyboard shortcuts and skip the menu entirely once you know your workflow, which is why long-time users lean on this for paraphrasing, grammar checks, and quick edits throughout the day.
Pros and cons
Pros
- Native Mac app that feels fast and stays out of the way.
- One assistant covers every app with a text field, so you don't juggle separate tools.
- Bring-your-own-key and local model support give you real control over cost and privacy.
- A one-time purchase with lifetime upgrades, rather than a monthly subscription.
- Active developer who ships updates and responds to user requests.
Cons
- Mac only. Windows and iPhone users are out of luck entirely.
- No free plan. You can't try it for free before paying, which is a real barrier.
- Bring-your-own-key means your costs shift to API usage, which can add up with heavy models.
- Local models demand capable hardware and can feel slower than cloud options.
Frequently asked questions
Fluent is an AI writing assistant for macOS that works inside other apps. You select text, trigger it with a shortcut, and it rewrites, translates, summarizes, or chats about your content using the AI model you've connected.
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