Tool profile
Teller: cost, fit and limits
Teller is a bank connection API that gives developers access to account, balance, identity and transaction data, priced per account, per API call or per enrollment, with a free Developer tier for prototyping. It is built for developers.
What to know first
Teller prints its prices openly. The Developer tier is free for 100 live connections, Verify costs $1.50 per account, Identity $1.75 per API call, Balance $0.10 per API call and Transactions $0.30 per enrollment per month. Teller Connect SDKs exist for iOS and Android, and the page counts more than 7,000 institutions. Enterprise pricing is custom. Enterprise adds premium support.
Teller at a glance
| Maker | Not stated on the vendor pages, Not stated on the vendor pages |
|---|---|
| Free plan | Yes |
| Entry price | Free (Developer tier, 100 live connections) |
| API access | Yes |
| Category | Best AI Open Banking APIs in 2026, rank 3 of 13 |
| Website | teller.io |
Who Teller is best for
Solo developers
The free Developer tier covers 100 live connections, so one person can ship a real product to early users before any invoice appears.
ACH-focused products
Verify confirms ACH account and routing numbers at $1.50 per account, which suits an app that needs bank details for transfers and nothing more.
Mobile app teams
Teller Connect SDKs for iOS and Android give a native way to launch the bank-linking flow inside an app. That avoids building a webview around an unfamiliar flow.
Teller plans and pricing
| Plan | Price | What it includes |
|---|---|---|
| Developer | Free | 100 live connections at no charge for that usage, for independent developers and teams prototyping. |
| Verify | $1.50 per account | Verified ACH account and routing numbers. Suited to onboarding flows. Charged once for each account that is verified. |
| Balance | $0.10 per API call | Guaranteed live account balances. Priced per call, with no monthly fee stated. Charged for each call, which suits checks before a transfer. |
| Transactions | $0.30 per enrollment per month | Transaction data billed per enrollment. Billed monthly for every linked enrollment. Charged every month for each enrollment. |
| Enterprise | Custom and volume-based pricing | Adds premium support through a named Slack channel. Volume based pricing for large customers who want faster support. |
Checked November 2026.
What Teller does
- Verify
- Confirms ACH account and routing numbers for $1.50 per account. It is a one-purpose product, useful when an app only needs verified bank details and not a full transaction feed.
- Identity
- Matches registered names, emails, phone numbers and addresses at $1.75 per API call. It verifies account ownership against registered customer details, which helps with onboarding checks.
- Balance
- Returns guaranteed live account balances for $0.10 per API call. Billing per call suits balance checks before a transfer, where a few lookups per user matter more than constant sync.
- Transactions
- Delivers transaction data and bills $0.30 per enrollment per month. Cost grows with the number of linked accounts, not with how often your app reads them.
- Teller Connect SDKs
- Native SDKs for iOS and Android embed the account-linking flow. The page counts more than 7,000 financial institutions, a figure given by the vendor. It is the vendor's own figure.
How Teller handles your data
The pages we read, the pricing page and the home page, say nothing about data handling. They do not state whether Teller trains models on customer data, how long it retains data, where data is hosted, or which security certifications it holds, so the vendor's policy was not checked for these points. Identity matching is described as checking account ownership against registered customer details. Request a security questionnaire answer and retention terms in writing before connecting real customer accounts.
Where Teller falls short in practice
- Developer cap. The free Developer tier covers 100 live connections. Past that, paid products apply, so a launch that signs up thousands of users in a week needs a plan before the cap is reached.
- Per-enrollment cost builds. Transactions bill $0.30 per enrollment per month, so a product with many linked accounts pays every month regardless of how rarely it reads data. Estimate linked accounts first.
- No company details. The pages read name no maker, headquarters, certification or AI feature. A regulated buyer has to request those facts and a data processing agreement. A regulated buyer has to request those facts and a data processing agreement in writing.
Works with
Alternatives to Teller
Teller: common questions
Is Teller free to use?
Teller has a free Developer tier for independent developers and teams prototyping, which allows 100 live connections at no charge for that usage. Paid products bill per account, per API call or per enrollment per month once you move beyond that or need specific products.
How much does Teller Verify cost?
Verify costs $1.50 per account and returns verified ACH account and routing numbers. Identity costs $1.75 per API call, Balance $0.10 per API call and Transactions $0.30 per enrollment per month. Enterprise pricing is custom and volume-based. Ask for the Enterprise terms.
Does Teller use AI?
No AI feature is named on the pages we read. Teller presents itself as a connection API with Verify, Identity, Balance and Transactions products. If AI insights matter to you, compare with vendors that name them, such as Belvo or Moneyhub, and ask for a demonstration.
How many banks does Teller support?
The vendor's page counts more than 7,000 financial institutions. That is the vendor's own figure and the pages we read do not list institutions or their countries, so confirm that the specific banks your customers use are supported before you build.
Does Teller have mobile SDKs?
Yes. Teller Connect SDKs exist for iOS and Android and embed the bank-linking flow inside a native app. The pages we read name no other front-end SDKs, so check documentation for web or React Native support if you need it.