Side-by-side comparison · AI Browsers & Agents
Brave vs Firefox vs Opera One
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Business owners who want an AI helper in the browser but don't want their browsing or chats stored or used for training.
Pick it if: Business owners who want a trusted, independent browser and want to decide for themselves whether AI is on or off.
Pick it if: Anyone who wants a free Chrome alternative with a capable AI sidebar, tab organisation and a built-in VPN, without paying for anything.
Overview
| Attribute | Brave | Firefox | Opera One |
|---|---|---|---|
| In one line | A privacy browser with Leo, a free AI assistant that doesn't keep your chats. | Mozilla's free browser with optional AI you can switch off with one setting. | Opera's free everyday browser with a built-in AI sidebar that reads your tabs. |
| Pricing model | Freemium | Free | Free |
| Starting price | $14.99/mo | Free | Free |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | No | No |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Brave | Firefox | Opera One |
|---|---|---|---|
| Overall rating | 3.9 | 3.6 | 3.9 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.0 | 3.5 | 4.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 3.5 | 3.0 | 3.0 |
| Output qualityHow good the results are before you fix them. | 3.5 | 3.5 | 3.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.5 | 4.5 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 3.5 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Brave | Firefox | Opera One |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | Yes | Yes |
| Desktop app | Yes | Yes | Yes |
| Browser extension | No | No | No |
| API access | No | No | No |
| Teams & business | |||
| Team workspace | No | No | No |
| Enterprise plan or SSO | No | Yes | No |
| Connects to other apps | No | Yes | Yes |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | Yes | No | Yes |
| Understands images | Yes | No | Yes |
| Makes images | No | No | Yes |
| Makes video | No | No | No |
| Writes code | No | No | No |
| Runs agents or automations | Yes | No | No |
| Learns your brand or style | No | No | No |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 7/ 17 | 6/ 17 | 8/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Brave | Firefox | Opera One |
|---|---|---|---|
| Plans | FreeOur pick Free Everyday summaries and questions while you browse. | FirefoxOur pick Free Everyone, with AI on or off as you choose. | Free Free Everyone. There is no paid tier for the AI. |
Leo Premium $14.99/mo, or $149.99/yr Daily users who want better answers and fewer limits. | Smart Window beta Free Heavy researchers in the US, Canada or France. | Free with an Opera accountOur pick Free Anyone who wants chat history across devices and more images. | |
| Which plan to pick | Start free. If you hit the daily limits or the answers feel thin, Premium at $14.99 a month gets you Claude-level quality inside a private browser. If you already pay for ChatGPT or Claude, you may not need Premium at all, since those work in any browser. | There's nothing to pay. Use the sidebar with whatever AI account you already have. If you're in the US, Canada or France, try Smart Window with a free Mozilla account. Everyone else can join the waitlist. | It's all free. Sign in with a free Opera account if you want your chats saved and more images; otherwise just download it and click Ask AI. Opera sells a separate VPN Pro, but you don't need it for the AI. |
Key features
| Attribute | Brave | Firefox | Opera One |
|---|---|---|---|
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Pros and cons
| Attribute | Brave | Firefox | Opera One |
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Who each one is for
| Attribute | Brave | Firefox | Opera One |
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Questions people ask
Which is better, Brave, Firefox or Opera One?
They tie on our overall rating (Brave 3.9/5, Firefox 3.6/5 and Opera One 3.9/5). Brave is best for summarising pages, PDFs and Google Docs privately and quick answers with Brave Search sources. Firefox is best for Keeping AI out of the browser entirely and using your own ChatGPT or Claude in a sidebar. Opera One is best for summarising long pages and YouTube videos and comparing suppliers or products grouped in a Tab Island.
Which is cheaper, Brave, Firefox or Opera One?
Brave: There's a free plan, and paid plans start at $14.99/mo. Firefox: It's free and open source. Opera One: It's free to use.
Which is easier to use, Brave, Firefox or Opera One?
Opera One rates highest for ease of use in our scores. Anyone who wants a free Chrome alternative with a capable AI sidebar, tab organisation and a built-in VPN, without paying for anything.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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