Honest comparison
Zeed vs Firefox + AI extensions:
which fits you?
Firefox is the default answer for many Linux users, and rightly so: native packages in every distro, MPL-2.0, a non-Chromium engine, decades of trust. The question this page answers is narrower — if you want AI in your browser on Linux, is Firefox plus an AI extension enough? Extensions give you a chat sidebar; Zeed gives the model your tabs, memory, and reading context at the browser level. Both are legitimate answers depending on how much you want AI involved.
Feature by feature
| Feature / policy | Zeed | Firefox + AI extensions |
|---|---|---|
| Native Linux build | ✓ Linux-first | ✓ (packaged in every distro) |
| BYO API key (direct billing) | ✓ OpenRouter key, browser-integrated (models currently fixed) | ◯ via extensions (sidebar-level) |
| On-device data (by construction) | ✓ | ◯ (browser is local; AI extensions vary by vendor) |
| Open source | ✓ MPL-2.0 diff | ✓ MPL-2.0 |
| MCP (reuse Claude/Cursor tools) | ✓ | — |
| Built by subtraction (no sponsored content) | ✓ | ◯ (sponsored shortcuts on by default; removable) |
| Price | $0 | $0 (extensions may carry their own plans) |
✓ = full / ◯ = limited / △ = policy claim without structural guarantee / — = no
Based on each vendor’s public material as of 2026-06. Independent research —
spotted an error? Email us and we’ll fix it.
Which one should you pick?
Choose Firefox if…
- You want a non-Chromium engine — Gecko is the main independent alternative, and engine diversity is a real concern.
- You rely on Firefox-only features: Multi-Account Containers, about:config depth, Mozilla sync.
- You want AI to be strictly optional and sandboxed in an extension you chose, with zero AI code in the browser core.
- You want distro-packaged, distro-patched builds with decades of Linux history behind them.
Choose Zeed if…
- You want AI that natively sees your tabs, memory, and reading context — extensions only get the shallow page access the WebExtension API allows.
- You want agentic actions (open tabs, fill forms, stop before submit) — not possible from a chat-sidebar extension.
- You want Chrome extension compatibility and Chromium site behavior with AI included.
- You use MCP tools and want them integrated at the browser level, running on your own OpenRouter key.
- Mozilla's built-in AI features (chatbot sidebar, link previews) are still experimental and mostly open a provider's web chat.
FAQ
Zeed vs Firefox, answered.
Can't I just add an AI extension to Firefox?
▾
You can, and for occasional 'summarize this page' use it's fine. The limits are structural: a WebExtension only sees what the extension API exposes for the current page, so it can't reason across your open tabs, browsing memory, or take agentic actions like opening tabs and filling forms. Zeed integrates the AI at the browser level, so the model gets that context — while all of it stays on your device.
Doesn't Firefox have built-in AI now?
▾
Mozilla has been shipping experimental AI features — an AI chatbot sidebar (which opens your chosen provider's web chat), link previews, and local translation. As of June 2026 these are experiments, not an integrated AI browsing layer. Local translation is genuinely good; the rest is early.
Isn't another Chromium browser bad for engine diversity?
▾
It's a fair criticism, and if engine diversity is your top priority, Firefox is the right choice — this page says so plainly. Zeed chooses Chromium for Chrome extension compatibility, site compatibility, and a maintainable diff (published under MPL-2.0). Different priorities, both defensible.
Comparing others too? See all comparisons or the full feature matrix.
Try Zeed in two minutes.
Free, no account, no subscription. Paste an OpenRouter key on first launch and you’re browsing with AI.