Budgeting apps you can use inside ChatGPT and Claude (September 2026)
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Disclosure: this guide is written by the team behind Bazous, one of the apps below. We tried to describe every option as fairly as our own, including where another one fits you better. All facts were checked on 28 September 2026 from each product's public pages; tell us at contact@bazous.com if something has changed.
Asking an assistant "will I make it to payday?" only helps if it can see your real numbers. In 2026 there are three ways to give it that: ChatGPT's own finance feature, an app that connects to the assistant through MCP (the open standard Claude and ChatGPT use for connectors), or a community-built connector for an app you already use. Here is what exists today, and who each one is for.
How we compared them
- Where it works: country, and which assistants.
- Where the data comes from: a bank connection (Plaid) or what you type or upload yourself.
- What the assistant may do: only read, or also change your data.
- Price, as published.
At a glance
| Assistants | Data source | Assistant can write? | Availability | Price | |
|---|---|---|---|---|---|
| ChatGPT personal finance | ChatGPT | Bank connection (Plaid, 12,000+ institutions) | No: it cannot change accounts | US only, Plus and Pro | Included in Plus ($20/month) and Pro |
| Bazous | Claude, ChatGPT (custom connector; directory listings in review) | What you enter or upload (bills as PDF, photo or text); no bank connection | Only when you ask (3 of 9 tools) | Not country-restricted; 7 currencies, 5 languages | Free |
| Beyond Payday | Claude, ChatGPT | What you type; no bank connection | Yes (22 of 38 tools); a read-only address is offered | US only | Free while the connector is in preview |
| OpenBudget | Claude, ChatGPT, Cursor, Codex and others | Bank connection (Plaid, 10,000+ banks and cards) | No: read-only | Not stated on its site | 7-day free trial; plans on its pricing page |
| YNAB / Monarch Money | Claude (community connectors) | Your YNAB or Monarch account | Depends on the connector | Wherever the app works | Your app subscription; connectors are free |
ChatGPT's built-in personal finance
OpenAI launched a personal finance experience in ChatGPT on 15 May 2026 for Pro users, and opened it to Plus users in the US at the end of June. You connect bank, card and investment accounts through Plaid; ChatGPT then shows a dashboard of spending, subscriptions, upcoming payments and portfolio performance, and answers questions about them. It can see balances and transactions but not full account numbers, and it cannot make changes to your accounts.
Best for: US users on Plus or Pro who want their bank data pulled in automatically and never want to type a transaction.
Less suited if: you live outside the US, use the free plan, or would rather not link your bank accounts to an assistant.
Bazous
Bazous is a household cash-flow app that answers the questions before you ask them: how much is available, what is due before the next payday, how low the balance will go and which payment is worth moving. In Claude and ChatGPT each answer is drawn as a small card, and a what-if ("what if I move the dentist bill?") is computed without saving anything. It also flags avoidable bank fees, large yearly bills coming, and how many months your savings would last without income.
There is no bank connection: you enter your balance and income once, then add bills as a PDF, a photo or text. Of its nine tools, six only read; the other three save a profile fact or mark a bill as paid, and only when you ask. Several people can share one household. Bazous works in CHF, EUR, USD, GBP, CAD, XAF and XOF, in English, French, German, Italian and Romansh; households kept in Swiss francs also get health insurance and pillar 3a answers. It is free.
Bazous is in review for the Claude and ChatGPT directories. Until it is listed there, you add it yourself with the address https://bazous.com/mcp: as a custom connector in Claude (Settings, then Connectors), or as a custom app in ChatGPT’s developer mode. The documentation walks through both.
Best for: households outside the US, people who do not want to link a bank, couples managing money together, and anyone whose question is "what happens between now and payday?".
Less suited if: you want every transaction imported automatically, or you want to track investments and net worth.
Beyond Payday
Beyond Payday is a household finance planner for the US covering cash flow, net worth, bills, debts, goals and retirement, with scenarios and a "hard times" plan for when income stops. Like Bazous it has no bank link: everything is typed in. Its connector exposes 38 tools, 22 of which can add, edit or delete records, and it offers a separate read-only address for people who prefer the assistant not to write. The connector is available on every plan, including the free one, while in preview.
Best for: US households who want a broad plan (net worth, debts, retirement) and are happy to let the assistant maintain it.
Less suited if: you live outside the US.
OpenBudget
OpenBudget connects your bank and brokerage accounts through Plaid and makes them available, read-only, to a long list of assistants and coding tools, including Claude and ChatGPT, plus Google Sheets and Excel. It cannot move money. It offers a 7-day free trial; its countries and prices are not stated on the home page.
Best for: people who want bank data in several AI tools, not only ChatGPT.
Less suited if: you want a free option, or the assistant to keep a plan up to date for you.
YNAB and Monarch Money: community connectors
Neither YNAB nor Monarch Money publishes an official connector for Claude or ChatGPT. Community-built MCP servers exist for both. YNAB's use your personal access token through the official YNAB API. Monarch's rely on an unofficial library and usually ask for your email, password and MFA secret in a configuration file, which is a real security trade-off.
Best for: existing users comfortable installing and configuring a connector themselves.
Which one should you pick?
- In the US, want everything automatic: ChatGPT's built-in finance, or OpenBudget if you use several assistants.
- In the US, want a full long-term plan: Beyond Payday.
- Outside the US, no bank link, or managing money as a couple: Bazous.
- Already on YNAB or Monarch: a community connector, knowing its security model.
Whatever you choose, remember that an assistant's forecast is only as good as the data behind it, and none of these tools gives regulated financial advice.
Sources
- OpenAI, A new personal finance experience in ChatGPT; TechCrunch, 15 May 2026; MacRumors, 15 May 2026; 9to5Mac, 30 June 2026
- Bazous, documentation and privacy
- Beyond Payday, MCP connector page
- OpenBudget, home page
- calebl/ynab-mcp-server; robcerda/monarch-mcp-server; OpenBudget, Does Monarch Money work with Claude?