I work at Plaid, so this got me curious about who their provider was -- per Wikipedia, Mint used Intuit's internal account aggregation tools from ~2010-2024. It's possible that Mint swapped out to some other third party provider and Wikipedia doesn't know about it, but based on both internal and external records, I'm pretty sure it wasn't Plaid. (Intuit's Credit Karma, which was marketed to Mint customers as a replacement after Mint shut down, does use Plaid.)

> IME Monarch seems like the current best option in this space...

Monarch is just horribly overpriced. I'm not opposed to paying for a SaaS or anything, but Monarch is much too expensive for what it is. Empower (used to be called Personal Capital) is free and what I use instead of Mint. In fairness, the only thing that I really ever used Mint for was to see my net worth and account balances.