Quan 3.0 is being replaced. Its successor is called Quan Nova, and it costs the same to use. We rebuilt the model from the ground up instead of patching the existing architecture, and the difference shows up in both speed and quality: responses come back faster, and they hold up better once you start pushing on them.
This isn't a small version bump. Quan 3.0 has been the model behind most of what StockUp does, from the chat experience to the API that developers build products on, so retiring it is a bigger change than it might look like from the outside. Nova is meant to take over that entire footprint, not just replace one piece of it.
What's actually changing
Quan 3.0 is discontinued on October 1st. Once that date hits, any API call still pointed at Quan 3.0 will get redirected to Nova automatically, so existing integrations won't break outright.
That said, we still recommend developers update their code to call Nova directly rather than lean on the redirect. A redirect is a safety net, not a permanent feature, and we don't plan to keep it running forever. Calling Nova directly also skips the extra hop that the old Quan 3.0 endpoint would otherwise add, so there's a real, if usually small, benefit to making the switch early instead of waiting until the cutoff forces it.
Nova is live, but it's still labeled beta
You can use Nova right now. It's public, and it's already the default model for free, signed-out users on the Quan chat subdomain, with the same chat limits that applied to Quan 3.0.
We're keeping the Beta label on it for now, likely through October 1st, while we finish tuning it ahead of Quan 3.0's shutdown. In practice, that means the model you're using today is the same one that carries Quan forward once 3.0 is gone. The Beta label is less about withholding a finished product and more about giving ourselves room to keep adjusting behavior based on how people actually use it, before the old model disappears and Nova becomes the only option.
An outside partner is already building on it
Strut AI is not part of StockUp. It's a separate company, focused on privacy-preserving AI web browsing, that we've partnered with, and it has told us it plans to use Nova specifically for its finance-related web searches.
That's the first outside integration we can point to, and it's a useful signal on its own: Nova is stable enough that a partner is willing to build search functionality around it instead of waiting for it to fully graduate out of beta. We expect more integrations like this as Nova matures, though for now this is the one we can share.
What's next
A few things are still rolling out. In the coming weeks we're removing Quan 3.0's free allowance on the API and replacing it with a Nova equivalent, so free-tier developers won't lose access, they'll just be pointed at the newer model instead. Nova Enterprise access is coming shortly after that, extending the same upgrade to teams already using StockUp at that tier. We'll share specifics on both once they're finalized rather than commit to details ahead of time.
If you're building on the Quan API today, the practical step is simple: start calling Nova directly instead of Quan 3.0, ahead of the October 1st cutoff. The redirect, the Beta label, and the free-tier changeover are all designed to make that transition survivable if you don't move right away. But moving early is still the better plan.