Fidelity Go vs SoFi: Which Is Better in 2026?

Figures and features are point-in-time and change; treat the table as a starting map, not a live quote.

Fidelity's automated service, free below a stated balance and built from zero-expense-ratio Fidelity Flex funds. Best for people starting out.

How it works: A questionnaire sets the allocation, and Fidelity invests it in its own Flex mutual funds, which carry no expense ratio because Fidelity earns the advisory fee instead. Below a stated balance there is no advisory fee at all, which makes it one of the genuinely free ways to get a managed portfolio; above it, a flat percentage applies.

In practice, Fidelity Go’s AI automates a fidelity flex fund portfolio. It falls under hands-off automated investing (robo-advisors), which makes it best suited to small balances, where it is free. On connecting an account it is “No (holds your money at Fidelity)”, and on execution it is “Automated”. It is priced as free under a stated balance, then a flat percentage (verify current).

One honest limitation: No tax-loss harvesting, which removes the strongest argument for a managed taxable account.

Free automated investing plus an AI financial coach inside an all-in-one money app. Best for beginners already in the SoFi ecosystem.

How it works: Inside the SoFi app you can opt into automated investing, where SoFi allocates a diversified ETF portfolio matched to your risk level and rebalances it, or you can self-direct trades in stocks and ETFs. All of it sits next to SoFi's banking, loans, and credit products, with AI-driven help answering money questions.

In practice, SoFi’s AI automated investing + ai coach. It falls under hands-off automated investing (robo-advisors), which makes it best suited to beginners in one money app. On connecting an account it is “No (holds your money)”, and on execution it is “Automated”. It is priced as free automated investing.

One honest limitation: Lighter on deep research and customization.

The core difference is category. Fidelity Go focuses on small balances, where it is free (automates a fidelity flex fund portfolio), and SoFi on beginners in one money app (automated investing + ai coach). On broker connection they differ too: Fidelity Go is “No (holds your money at Fidelity)” versus SoFi at “No (holds your money)”. That shapes everything downstream: how personal the answers are, where trades settle, and how much control you keep over individual positions.

Every tool gives something up for what it does well. Here is the honest give-and-take on each, so you can weigh the specific strengths against the limitations that come with them rather than judging on the headline category alone.

For AI investing tools, the distinction that matters most is whether the tool works from your actual, connected positions or reasons from something else: a separate account it manages for you, or the tickers and numbers you feed it. It decides how personal the answers can be, and where your money physically lives.

• Fidelity Go: manages a separate account it holds. Fidelity Go does not read the brokerage you already use. It opens and holds a new account, then invests the money you move into it, so its view is limited to what sits inside Fidelity Go.
• SoFi: manages a separate account it holds. SoFi does not read the brokerage you already use. It opens and holds a new account, then invests the money you move into it, so its view is limited to what sits inside SoFi.

On this specific question the two land on the same side, so the deciding factors between them are elsewhere: category, cost, and who each is built for. This holdings-aware angle is the one Walnut is built around: it connects the brokerage you already use and reasons from your live positions, read-only by default, with any trades left for you to approve.

There is no universal winner here; the right pick depends on the job you are hiring the tool for. Match the category to your intent rather than chasing a single “best.”

• Choose Fidelity Go if you want small balances, where it is free. Its AI automates a fidelity flex fund portfolio, it is priced as free under a stated balance, then a flat percentage (verify current), and it fits hands-off automated investing (robo-advisors). It is built for someone with a smaller balance who wants automation at no cost and holds it in a retirement account where harvesting would not apply anyway. Keep in mind that no tax-loss harvesting, which removes the strongest argument for a managed taxable account.
• Choose SoFi if you want beginners in one money app. Its AI automated investing + ai coach, it is priced as free automated investing, and it fits hands-off automated investing (robo-advisors). It is built for beginners who want investing bundled with banking in a single, simple app. Keep in mind that lighter on deep research and customization.

Because both sit in the same category, the choice comes down to the finer details above rather than a fundamental difference in approach.

Cost is easy to misread when two tools charge in different shapes, so compare the model, not just the number. Fidelity Go is priced as free under a stated balance, then a flat percentage (verify current), while SoFi is priced as free automated investing. A percentage-of-assets fee scales with your balance, a flat subscription does not, and a “free” tier usually earns elsewhere (on cash, order flow, or premium upgrades), so the cheapest headline is not always the cheapest outcome for your situation.

Pricing and tiers change often. Confirm the current numbers on each provider’s own site before you decide; the framing above is point-in-time.

If neither quite fits, Walnut sits in a third category: chat-driven management of your own brokerage. It connects the brokerage you already use through SnapTrade, lets you analyze and manage it by talking through Claude or ChatGPT, build thematic portfolios around a thesis, and place trades you approve. Read-only by default. See Walnut vs Fidelity Go and Walnut vs SoFi. Walnut is not an investment adviser.