Side-by-side comparison · AI Browsers & Agents
Firefox vs Google Chrome 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 a trusted, independent browser and want to decide for themselves whether AI is on or off.
Pick it if: Anyone already using Chrome and Google's apps who wants AI help reading, comparing and researching without switching browsers.
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 | Firefox | Google Chrome | Opera One |
|---|---|---|---|
| In one line | Mozilla's free browser with optional AI you can switch off with one setting. | The world's most used browser, now with Gemini built in to read pages and do tasks. | Opera's free everyday browser with a built-in AI sidebar that reads your tabs. |
| Pricing model | Free | Freemium | Free |
| Starting price | Free | $19.99/mo | 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 | Firefox | Google Chrome | Opera One |
|---|---|---|---|
| Overall rating | 3.6 | 4.1Winner | 3.9 |
| Ease of useHow quickly someone non-technical gets value from it. | 3.5 | 4.5 | 4.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 3.0 | 4.0 | 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. | 3.5 | 4.0 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Firefox | Google Chrome | Opera One |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | Yes | Yes |
| Desktop app | Yes | Yes | Yes |
| Browser extension | No | Yes | No |
| API access | No | No | No |
| Teams & business | |||
| Team workspace | No | Yes | No |
| Enterprise plan or SSO | Yes | Yes | No |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | No | Yes | Yes |
| Understands images | No | Yes | Yes |
| Makes images | No | Yes | Yes |
| Makes video | No | No | No |
| Writes code | No | No | No |
| Runs agents or automations | No | Yes | No |
| Learns your brand or style | No | No | No |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 6/ 17 | 12/ 17 | 8/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Firefox | Google Chrome | Opera One |
|---|---|---|---|
| Plans | FirefoxOur pick Free Everyone, with AI on or off as you choose. | FreeOur pick Free Most people: summaries, tab comparisons and AI search. | Free Free Everyone. There is no paid tier for the AI. |
Smart Window beta Free Heavy researchers in the US, Canada or France. | Google AI Pro $19.99/mo US users who want Gemini to do tasks on websites for them. | Free with an Opera accountOur pick Free Anyone who wants chat history across devices and more images. | |
Google AI Ultra From $99.99/mo Heavy users who hit Pro's limits. | |||
| Which plan to pick | 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. | Use it free. The side panel is what most business owners will actually use, and it's free in Australia. Only pay for AI Pro if you're in the US or India and want auto browse, or you want Gemini's better models anyway. Nobody needs Ultra for the browser. | 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 | Firefox | Google Chrome | Opera One |
|---|---|---|---|
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Pros and cons
| Attribute | Firefox | Google Chrome | Opera One |
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Who each one is for
| Attribute | Firefox | Google Chrome | Opera One |
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Questions people ask
Which is better, Firefox, Google Chrome or Opera One?
Google Chrome scores highest overall in our ratings (Firefox 3.6/5, Google Chrome 4.1/5 and Opera One 3.9/5). Firefox is best for Keeping AI out of the browser entirely and using your own ChatGPT or Claude in a sidebar. Google Chrome is best for summarising pages and YouTube videos and comparing products or suppliers across tabs. Opera One is best for summarising long pages and YouTube videos and comparing suppliers or products grouped in a Tab Island.
Which is cheaper, Firefox, Google Chrome or Opera One?
Firefox: It's free and open source. Google Chrome: There's a free plan, and paid plans start at $19.99/mo. Opera One: It's free to use.
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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