Opera Neon
Built to act rather than chat — from a browser vendor that has been shipping since 1995.
Neon is Opera's entry, and the distinguishing fact is the provenance: this is a company that has shipped a browser continuously since 1995, arriving at agentic features from the browser side rather than the model side. Everyone else in this category is an AI company that built a browser. If your concern is that a nine-month-old startup is now the thing standing between your logins and the open web, that difference is not nothing.
Positioning is squarely on action — Neon is built to complete tasks rather than to summarize the page you're reading, which puts it closer to Comet and Aside than to Dia. The agentic capability is a paid tier, at roughly $19.90/month, which is the most expensive entry point in the category and worth weighing against Comet being free.
For Dojo purposes it's a credible option rather than a first recommendation — try Comet or Aside first, and reach for Neon if vendor longevity is the axis you're optimizing. Context in Orientation: Agent-Native Browsers.