Capacity

Capacity

Create Fullstack Web Applications in seconds using AI

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Create Full Stack Web Apps in Seconds with AI and natural language.
This is the 2nd launch from Capacity. View more

Spec Coding by Capacity

Launched this week
Vibe Coding with a planning assistant to build with clarity
Most AI app builders jump straight into building. That feels fast until your app gets messy, inconsistent, and nothing like what you imagined. Today, we’re introducing Spec Coding in Capacity. Instead of building immediately, Capacity now lets you define your app first with the help of an AI co-founder that asks the right questions before any code is generated. More structure upfront. Far less refactoring later. Much better results.
Spec Coding by Capacity gallery image
Spec Coding by Capacity gallery image
Spec Coding by Capacity gallery image
Spec Coding by Capacity gallery image
Spec Coding by Capacity gallery image
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Launch Team / Built With
Migma AI
Migma AI
Lovable for Email
Promoted

What do you think? …

Henry Adams

This looks great and really helps put the focus on the most important stage of the process. Do you have features to allow teams to work together on this? Good luck with the PH launch.

Baptiste Studer

@henry_adams5 we don't have a collaboration mode atm, it didn't came out as an important feature from our customers' feedback

Thanks! The PH battle is intense today

Bekjon Ibragimov

Nice Launch!
How much can you build on 100 credits ?

Baptiste Studer

@bekjon_ibragimov a complete web app. Here is a video of me implementing a fully working web app in only 50 credits:

. I still had 50 credits left in the end

Christian Pezzin

Thanks for sharing this @samuel_rondot ! Any free coupons for us PH users? 🤓

Baptiste Studer

@samuel_rondot  @pezzin  you can find it right here PH20OFF 🤫

Michaël Antoine

Really interesting approach with Spec Coding! As a full-stack dev building SaaS apps (DeadlineKeeper for college applications), I've been using BMAD Method (Breakthrough Method for Agile AI Driven Development) with Claude Code. The idea of defining structure upfront with an AI co-founder resonates with me - BMAD has 21 specialized AI agents that help architect before coding. Will definitely check out Capacity to see how your spec coding compares! 🚀

Baptiste Studer

@michael_antoine love it! BMAD is definitely one of our big inspirations 🔥

Michaël Antoine

Nice! Does Capacity follow a structured planning phase or is it more direct code generation? With BMAD I map out architecture upfront before Claude touches anything - wondering how you guys approach that. Already adopted BMAD for DeadlineKeeper. Good luck with the launch! Launching DeadlineKeeper soon myself

Praasshant Dubey

Great! How is this different from vibe coding tools? Like Lovable

Baptiste Studer

@praasshant_dubey we strongly committed on spec coding. The issue with vibecoding tools is they incitate you to build first, but this approach is not scalable. You end up with an application that lies on a growing technical depth.

With spec coding, you start with planning the features you want to implement with our specialized AI agents, and then you implement. AI output becomes more deterministic and you make your application scalable.

Spec coding tools are baked in Capacity.

Saul Fleischman

$69/month for even one custom domain? Industry standard is $25, and Dyad.sh allows one even on their free plan.

Direct Github integration cxoming soon...?

Also, as for the problem with AI "not asking questions," this is why we RAG it: we tell our AI tools, "when something is unclear, always ask questions before you answer or build."

Vibe Mode / Spec Mode: I read your explanations, and now have absolutely no idea which to choose. You need a help page with example(s).

Finally, I did get in there, found the demo does not let me enter a prompt; doesn't work.

Oh, bnut the Mini Pack, for when we get stuck and need just a few more credits: brilliant!

Baptiste Studer

@osakasaul The correct way to look at the platform is as a whole. Spec coding is baked in Capacity to help develop complex features faster with serenity. Capacity offers spec coding + hosting/custom domain + code download. This is not something you see on other platforms, thus the different pricing. Ours may not fit your needs, I get it and respect that. This is personal choices.

Another point is we are not VC backed. We can't afford free plans. The demo has been designed to showcase the UX/UI of the project page so you can understand the main functionalities of the platform before committing to it. It is a compromise for what we can afford to show. And we find it fair.

I get your point about Vibe Mode / Spec Mode, but I disagree with "this is why we RAG it". Non technical people don't know what RAG is and a lot of them are afraid to use AI tools. You feeling confortable with conversing with AI and asking for challenge is not the case for everyone. That's why we developed specialised agents: to guide users and make them feel confortable with the process. Clarifying questions and challenges are baked in our specialised agents so users don't have to explicitly ask for it.

Btw, we have a dedicated support on Discord and WhatsApp, so if you faced any frustration using our platform (which seems to be the case), feel free to reach out there. We'll take time to help you.

LI ZHI

My previous AI projects always turned into a mess after a few prompts. This "plan first" approach is a lifesaver for someone who isn't a pro developer.

Baptiste Studer

@daiphoon I strongly agree! Planning makes all the difference