Straight answers about ZB Stack.
What is ZB Stack?
The company behind CORA, your AI Product Agent. CORA coordinates a team of AI agents that shape your idea into the right product, build it, get it online, and keep improving it.
How is this different from a coding assistant?
A coding assistant writes code when you ask it to. CORA runs the whole product — what to build, the build itself, the launch, and the improving after. Coding is one agent's job on a bigger team of AI agents.
What is a Product Agent?
CORA's job title. A Product Agent is responsible for the outcome of a product rather than for its tasks: it completes the work, measures the result, and ships a better version.
What does RSI mean?
Recursively Self-Improving. CORA's agents run on the Cortex, a model trained on product work — every build and every measured result make it better at the next one.
Do I have to know which AI models to use?
No. That is CORA's job. It picks the best tool and model for each task, weighs cost against quality, and works inside a budget you set.
Where does my product run?
Wherever it should. Your DevOps Agent picks the most cost-effective home for a startup and keeps it live day and night; enterprises run a private deployment on their own infrastructure. For enterprises →
How much say do I have in what ships?
As much as you want. There are four settings — recommend, prepare, ship with approval, or ship within rules you set — per product and per kind of change, and you can change them at any time.
What is the record?
Your product’s whole story, written down: what changed, why, what it cost, who approved it, and what the numbers did. It is also how we invoice — you can see what you paid for what you got. See the record →
Who owns the software?
You do. The product, the code, and the record are yours, and they leave with you if you ever cancel.
What does it cost?
The Product Launch Pad is $0 for the first 30 days — the full experience with CORA, cancel anytime. After that it starts at $200 a month, and one subscription covers the whole team of AI agents: the interview, the build, the launch, and every improvement after. The budget you set at the interview is the ceiling for the first release, and the record shows what every change actually cost against it. ZB Stack for Enterprise, on your own infrastructure, is priced per organisation, and it has a 30-day Launch Pad of its own. No day rates and no change-request pricing — the agents do the work, which is the only reason those numbers are possible. See what you get →
Still deciding? Ask CORA directly.
The product interview answers most of what is left — what CORA would build, what it would cost, and when it would ship.