Gotta say we admire both teams, and have a lot of respect for anyone trying to make progress in this space.

As far as differences: both are an additional service you need to bolt-on in addition to signing up for Stripe. We're aiming to consolidate onboarding as a single provider that both processes. A lot of work still to do on our side, but that's where we want to end up: that you get your dream devex without needing to sign up for 2 products.

Both are essentially billing-only services where you bring your API key. We have a billing engine that we built from scratch, and are actually processing the payments, currently using Stripe Connect under the hood.

Lago seems to still require you to deal with webhooks - if not theirs, then Stripe's - and is focused on "billing as write operation" (their first-class concern is producing a correct, well-formed charge or invoice object). We want to solve both the "read" (what features can my customer access, what balance does their usage meter have?) and the "write" more conventional billing operations like charges, prorations, converting free trials to paid, etc.

With Autumn we're tackling a similar problem but they currently still require you to use Stripe Billing + your API key. So you'll be paying for Stripe Billing + Autumn (unless you self host). Overtime as we get deeper into the money movement side of things our paths will look more different, as more of our devex will include smoother ways to handle funds flows, tax compliance, etc.

And compared to both, at least from what I can tell from the outside, we're putting relatively larger share of our brain cycles towards making our SDK and docs deeply intuitive for coding agents.

We want to design our default integration path around the assumption that you will have a coding agent doing most of the actual work. As a result we've got some features like e.g. an MCP-first integration path that makes it easy for your coding agent to ask our docs pointed questions that may come up as it integrates Flowglad. And a dynamically generated integration guide md file that considers both your codebase context. A lot of that is the result of our own trial and error trying to integrate payments with coding agents, and we're going to be investing a lot more time and care into that experience going forward.