Walnut vs Mezzi: Which Should You Use? (2026)
Last updated June 2026
Short answer
Mezzi and Walnut solve different problems. Mezzi is best for aggregated wealth tracking with ai; it its own take on AI-assisted portfolio management. Walnut connects your own brokerage and lets you manage it by chatting through Claude or ChatGPT, with thematic baskets and trades you approve. Choose Mezzi if you want its own take on AI-assisted portfolio management; choose Walnut if you want thematic baskets plus the option to chat through Claude or ChatGPT and place trades you approve.
Both get called “AI investing tools,” but they are not substitutes. Here is what each one actually does, whether it touches your real brokerage, what it costs, and when each is the better choice.
What Mezzi is
Aggregates your accounts and layers AI insights with a tax-aware lens. Best for a consolidated view across holdings.
Best for: Aggregated wealth tracking with AI. Cost: Subscription. Limitation: Tracking-and-insight focused rather than thesis-driven basket building.
What Walnut is
Connects your real brokerage through SnapTrade and lets you analyze and manage it by talking through Claude or ChatGPT, build thematic baskets around a thesis, and place trades back through your own broker. Read-only by default, with trading you approve. Walnut is not an investment adviser.
In short, Mezzi is a close peer that also connects your accounts; the difference is mainly focus.
Mezzi vs Walnut at a glance
| Mezzi | Walnut | |
|---|---|---|
| Best for | Aggregated wealth tracking with AI | Talking to your own brokerage with AI |
| What the AI does | Aggregates accounts + tax-aware insights | Conversational + thematic baskets + trade |
| Connects your broker | Yes | Yes (SnapTrade) |
| Trades | Read | Read + you approve |
| Cost | Subscription | Free tier |
When Mezzi is the better choice
If you mainly want its own take on AI-assisted portfolio management, Mezzi is the more natural fit. Aggregates your accounts and layers AI insights with a tax-aware lens. Best for a consolidated view across holdings. Its main trade-off is that tracking-and-insight focused rather than thesis-driven basket building.
When Walnut is the better choice
If you want to keep the brokerage you already use and add an AI layer you actually talk to, Walnut fits. It is read-only by default, every trade needs your approval, and you can build thematic baskets and ask about your real holdings through Claude or ChatGPT. Walnut is not an investment adviser. From a connected account you can dig into a specific stock, an ETF, or a theme, and see how connecting a broker to an AI assistant works.
Try Walnut on top of your broker
Connect any major US broker in a few clicks. Walnut adds AI research, basket-building, and live portfolio answers, without changing where your money lives.
FAQ
Is Walnut better than Mezzi?
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Neither is strictly better; they are built for different jobs. Mezzi is best for aggregated wealth tracking with ai. Walnut is best for talking to your own brokerage with AI: it connects the broker you already use, lets you manage it by chatting through Claude or ChatGPT, and builds thematic baskets. Choose based on which job you are hiring the tool for.
Does Mezzi connect to my existing brokerage?
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Mezzi: Yes. Walnut connects most US brokers through the regulated aggregator SnapTrade, stays read-only by default, and requires your approval for every trade.
Can I use Mezzi with ChatGPT or Claude?
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Mezzi is a close peer that also connects your accounts; the difference is mainly focus. Walnut is designed to work through Claude or ChatGPT (or its built-in assistant) against your real, connected portfolio.
Walnut vs Mezzi: which costs less?
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Mezzi: Subscription. Walnut: Free tier. Pricing and features change, so verify current details on each provider's site before deciding.
Walnut is informational and is not an investment adviser. Mezzi's features and pricing change; verify current details on each provider's site before deciding.