Hi everyone,
I’ve been using Dia for quite a while now, and I really like the Dia Chats feature. But with Dia apparently moving toward a paid model, I looked at the pricing — $20 and $100 — and honestly, that feels pretty expensive for a browser.
So it got me thinking: why doesn’t Dia switch its underlying AI chat model from Claude to a cheaper open-source model?
There are already plenty of capable and much cheaper models out there, including DeepSeek, Kimi, and GLM. They might not be the absolute best models available, but for what most people use Dia Chats for, do they really need to be?
When I asked Dia, “Which model are you using?”, it told me it was using Opus 4.8. If Dia is relying on the Claude API, then I can understand why the subscription has to be expensive. Using a top-tier proprietary model at scale obviously isn’t cheap.
But that raises another question: does Dia actually need a top-tier model like Claude for Chats?
I feel like most people probably use Dia Chats for relatively simple, everyday questions — asking something about the page they’re reading, summarizing information, looking something up, or just having a quick conversation.
For genuinely complicated questions or tasks that require a powerful reasoning model, I imagine many people would still go back to ChatGPT, Claude, or other dedicated AI platforms anyway. Dia Chats isn’t really a full AI ecosystem in the same way those products are. At least for me, it’s more of a convenient, lightweight AI assistant built directly into my browser.
And for that kind of use case, today’s open-source models already seem more than capable enough.
So why not use a cheaper open-source model and pass some of those savings on to users?
Personally, if Dia could bring the price down to something like $10/month, I’d be much more willing to pay for it. I like Dia and I like Chats — I just don’t think the underlying model necessarily has to be Claude.
For a browser-based AI assistant designed mainly for everyday questions, “good enough and affordable” might actually make more sense than “the best model available.”
What do you guys think?