How to Use Fellou: The Beginner's Guide (First Deep Search, First Deep Action, and the Supervised-Agent Rule)

CodexFuse Team · 2026-10-30T06:24:42.130Z · 10 min read

A regular browser waits for you to click. An agentic browser clicks for you. Learning how to use Fellou means learning that difference: you stop driving every step and start giving goals, while Fellou plans the steps, opens the tabs, reads the pages, and reports back. This guide walks you through the whole beginner arc in one sitting: install, your first Deep Search, your first Deep Action, the Shadow Workspace, and the supervised-tasks rule that keeps you in control. If you are comparing agentic browsers first, the Comet beginner guide covers the other big lane before you come back here.

How do you use Fellou?

You use Fellou by installing the desktop app, typing a goal into the chat window, reviewing the plan it writes, and letting its Deep Action engine run the steps in a background Shadow Workspace. You supervise; the browser does the legwork.

1. Download and install. Get the app from fellou.ai for Mac or Windows, run the installer, set your language, and sign in if you want your work synced across devices.
2. Start with a research goal. Type something like "Compare the prices and free plans of three project management tools" and choose Deep Search.
3. Generate the report. Fellou searches across the public web and logged-in platforms, then compiles a visual report you can share with one click.
4. Give it an action goal. Type a task like "Open the three cheapest options' pricing pages and collect the monthly and annual prices into a comparison."
5. Review the plan, then approve. Fellou shows you its step-by-step plan first. Review it, edit anything you dislike, then let it run. You can watch, pause, or stop at any point.

What is Fellou?

Fellou is the world's first agentic AI browser, introduced in mid-2025 by Fellou AI (ASI X Inc.), and it is built on one idea: a browser should act on goals, not just render pages. At its core is Deep Action technology, which turns a plain-language command into a sequence of real browser operations: opening pages, reading content, clicking buttons, filling forms, and downloading files.

Two truths make the whole thing click. First, Fellou acts on your behalf, so your first tasks should be supervised and low-stakes; review every plan before it runs, and do not hand over email, shopping, or finance logins on day one. Second, Deep Action runs in a shadow window, so your own workspace is never hijacked mid-task while the agent works.

The Fellou browser also includes the normal browser basics: tabs, tab groups, bookmarks, and cross-device sync. The agent layer sits on top of those instead of replacing them, so on your first day you can browse normally while you get comfortable giving it goals.

How do I install Fellou?

Installing Fellou takes a few minutes. Visit fellou.ai and click Download, then pick the version for your device: Mac users need to check their chip type first (Apple menu, then About This Mac, and look at the chip line for Intel or Apple), and Windows users take the Windows build. Run the installer and follow the prompts.

When you open Fellou for the first time, set your language and decide whether to sign in. An account is optional, but signing in enables cross-platform synchronization so your timelines, tab groups, and knowledge base stay consistent across your devices.

During early access some regions saw a waitlist before receiving access, so if the download page asks you to join a queue, that is normal and not an error. The current install flow documented above is the standard path now.

What is a Fellou Deep Search?

A Fellou Deep Search is bulk research across the public web and platforms that need a login, like LinkedIn, X, and Quora, ending in a visual report instead of a link list. It is the fastest way to feel what makes the Fellou agentic browser different from a search engine.

Try this as your first run. Enter a research keyword in the Fellou search field, for example "agentic browser pricing 2026". Fellou searches the public web and logged-in platforms at the same time, aggregates what it finds, and when you click Generate Report it organizes the data into a visual report you can share with one click.

The difference from a normal search is the depth of platform content: instead of skimming ten tabs yourself, Fellou digs into the platforms and saves the manual aggregation hours. You can also drag page elements or images straight into the Fellou chat window to trigger actions like extracting text or uploading a file for analysis.

What is a Fellou Deep Action?

A Fellou Deep Action is a complex web task completed from one simple command, with the plan shown to you first. Type a goal in the Fellou chat window, and Fellou analyzes it into a detailed step-by-step action plan that you review, approve, and edit before anything executes.

Here is a safe first Deep Action. Ask Fellou to "Open the pricing pages of the three tools from my research report and collect the monthly and annual prices into one comparison." Fellou opens the source pages, reads the content, interacts with any forms or selectors in the way, and produces the comparison. Because it works in the shadow window, your own tabs stay exactly as they were.

The supervised-tasks rule applies to every Deep Action you run in your first week: always review the plan before execution, keep the tasks research-style (collect, compare, draft, summarize) rather than account-touching, and use the stop button freely the first time something looks off. One reviewed plan teaches you more about how the agent thinks than ten unreviewed ones.

What is the Fellou Shadow Workspace?

The Fellou Shadow Workspace is the background area where AI tasks run while you keep working. Assign a task, and Fellou executes it in the shadow window with the progress shown in the Workspace panel; you can view or pause the task at any time without disturbing your own browsing.

This is what makes agentic browsing practical instead of annoying. A traditional automation tool takes over your screen or your main window, but the shadow workspace model means your tab groups stay put while the agent does its own thing in the background. Users can switch tab groups to handle other work and check back whenever they like.

Think of it as asynchronous collaboration: you hand off the goal, do your own work, and return to a finished result. If the task goes sideways, pausing is one click and the state is preserved.

What does the Smart Timeline do?

The Smart Timeline records your browsing and task actions chronologically so you can jump back to any point and resume. Open the Timeline panel in the Fellou sidebar and your history appears in order; clicking any point in time restores that page state.

Key task nodes can be saved, which turns the timeline into a real workflow tool: save the node where your research finished, and tomorrow you can resume exactly there instead of re-running the whole Deep Search. Combined with Proactive Intelligence, which builds a personal knowledge base from your behavior, the timeline becomes a memory of how you actually work.

For beginners, the practical habit is simple: save a timeline node at the end of every successful task. Two weeks in, those nodes are a searchable archive of finished research and reports.

How much does Fellou cost?

Fellou runs on Sparks, which are task credits, and the free tier is the way to try it before paying. The current plans, as reported from the official pricing page by independent trackers in late October 2026, are:

Annual billing saves about 20 percent: Plus $192, Pro $384, Ultra $1,920 per year. Spark consumption depends on task complexity, so a simple Deep Search costs far less than a long multi-site Deep Action. Older reviews describe a credit-package system instead (for example $20 for 2,000 credits); the Spark tier table above is the current system, but prices change often, so confirm on the official pricing page before you buy.

Features are spread across plans as well. Core chat is available on all plans; Deep Search, the visual report generator, Browser Use (full workflow automation from a single command), and Computer Use (permission-based control of local apps and files) scale with the tier. Paid tiers also get the advanced report model instead of the standard one.

Fellou vs Comet vs Dia: which agentic browser should I try?

The agentic browser category is new, and the three names you will see most are Fellou, Comet, and Dia. Fellou is the original agentic browser with the Deep Action plus Shadow Workspace model and a Spark-credit free tier; if the "browser that acts" idea appeals to you, start here and work this guide.

Pick Fellou if you want the deepest automation model and the shadow-window workflow. Pick Comet if you already live in Perplexity's search world. Pick Dia if you came from Arc and want the successor experience. And if you decide you want a private browser without the agent layer at all, the Brave beginner guide covers that lane instead.

Tips for your first week in Fellou

• Start with research, not actions. Run three or four Deep Searches before your first Deep Action so you learn how the agent reports results while nothing irreversible can happen.
• Review every plan before execution. The review-edit-stop habit is the entire safety model; it takes thirty seconds and catches bad assumptions early.
• Keep day-one tasks off your accounts. Research, compare, collect, draft, summarize: yes. Anything touching your email, shopping, or money: not yet.
• Use tab groups for agent work. Create a tab group for each project so the shadow workspace tasks and your own tabs never tangle.
• Save timeline nodes after every win. Each saved node is a resume point; a month in, they become your personal research archive.

Sources

Pricing and plan details are reported from the official fellou.ai/pricing page by AIcensus (checked October 26, 2026: Free 1,000-Spark bonus, Plus $19, Pro $39.90, Ultra $199.90, annual savings) and AgentGid (checked October 29, 2026: desktop app on macOS and Windows, plan review-and-edit, paid plans from $19/month). The feature walkthrough follows AI Sharing Circle's Fellou guide (crawled October 28, 2026: install steps, Deep Search and Deep Action procedures, Shadow Workspace, Smart Timeline, Eko framework, drag-and-drop, privacy claims) and SmartSight's explainer (September 2026: mid-2025 launch, the four core buckets, the shadow window, the earlier credit system). Plan feature spreads come from RelveHQ's Fellou tool page (Browser Use and Computer Use, core chat free across plans, advanced report model on paid tiers). Comet's maker is confirmed by the SourceForge Comet-vs-Fellou comparison page. Prices change; confirm on the official pricing page before buying.

Frequently asked questions

Is Fellou free?

Yes. Fellou has a free tier that includes a 1,000-Spark new-user bonus and 2 scheduled tasks, which is enough to run real Deep Searches and try Deep Action before paying. Paid plans start at $19 per month for Plus.

What platforms does Fellou run on?

Fellou is a desktop app for Mac and Windows; Mac users pick the Intel or Apple-chip build. It is not listed for iOS, Android, Linux, the web, or the command line, so plan your first setup on a desktop computer.

Is Fellou safe to use?

Fellou's published position is that it does not track browsing or search behavior and encrypts data with military-grade encryption. In practice, safety also depends on you: review every action plan before execution, and keep first-week tasks to research and reporting rather than account-touching automation.

What are Sparks in Fellou?

Sparks are Fellou's task credits. Simple tasks like a Deep Search use few Sparks; long multi-site Deep Actions use more, because consumption depends on task complexity. The free tier starts you with a 1,000-Spark bonus, and the Ultra plan currently offers unlimited Sparks for a limited time.

What is the difference between Fellou, Comet, and Dia?

Fellou is the first agentic browser, built around Deep Action and the Shadow Workspace with a Spark-credit free tier. Comet is Perplexity AI's agentic browser, and Dia is The Browser Company's Arc-successor agentic browser. Each has its own beginner guide linked in the comparison section above.