No, Teller is more of a competitor to Plaid (
https://plaid.com/). Plaid offers an API to perform a variety of actions with existing banks, and charges through the wazoo for it as a middleware.
Column is an actual bank, and offers exhaustive developer-first APIs. I suspect you can do a lot of things with them you cannot do with Plaid, and at highly reduced cost comparatively. Increase doesn't seem to be a bank but is a much lower-level API than Plaid and allows things like opening accounts, FWICT.
BTW, bunq (https://www.bunq.com/) is a cool nl-based bank which offers an incredibly in-depth API. But I would not call it dev-centric, the DX is awful.