I built a SaaS with Codex. The surprising part wasn't the speed.

I've been building DealClose with a lot of help from Codex, and one thing surprised me.

Writing the code stopped being the biggest bottleneck pretty quickly.

I could explain a feature, work through the implementation, debug something that broke, and iterate much faster than I would have expected.

But that created a completely different problem:

When you can build almost anything quickly, deciding what NOT to build becomes much harder.

I've definitely had moments where I added something because it was technically possible, then looked at the product afterward and thought:

Does a customer actually need this?

I've also learned that AI making code faster doesn't remove the need to understand the product. Sometimes it makes product judgment even more important.

The things I spend more time thinking about now are:

• Is this solving the actual problem?

• Does this add another unnecessary step?

• What happens when the AI gets something wrong?

• Would a customer understand this without me explaining it?

• Should this feature even exist?

Codex has made me much faster at going from idea → working feature.

But I'm realizing that speed of building and quality of product decisions are two very different things.