Side-by-side comparison · AI Browsers & Agents
ChatGPT Work vs Firefox vs Manus
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: ChatGPT users who want admin, inbox, research and reporting jobs done for them without building automations.
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: People who want to hand off whole tasks and don't want to build the automation themselves.
ChatGPT Work scores highest overall, but Firefox gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | ChatGPT Work | Firefox | Manus |
|---|---|---|---|
| In one line | ChatGPT's agent mode: hand it a whole task across your email, apps, files and browser. | Mozilla's free browser with optional AI you can switch off with one setting. | A general-purpose agent that takes a goal and works through it in its own browser. |
| Pricing model | Freemium | Free | Freemium |
| Starting price | $20/mo | Free | From $20/mo |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | No | Yes |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | ChatGPT Work | Firefox | Manus |
|---|---|---|---|
| Overall rating | 4.0Winner | 3.6 | 3.7 |
| 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. | 4.5 | 3.0 | 4.0 |
| Output qualityHow good the results are before you fix them. | 4.0 | 3.5 | 3.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.0 | 4.5 | 3.0 |
| Speed & reliabilityHow fast it is and how often it falls over. | 3.5 | 3.5 | 3.5 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | ChatGPT Work | Firefox | Manus |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | Yes | Yes |
| Desktop app | Yes | Yes | Yes |
| Browser extension | No | No | Yes |
| API access | No | No | Yes |
| Teams & business | |||
| Team workspace | Yes | No | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | 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 | Yes | No | Yes |
| Makes video | No | No | Yes |
| Writes code | Yes | No | Yes |
| Runs agents or automations | Yes | No | Yes |
| Learns your brand or style | No | No | No |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 12/ 17 | 6/ 17 | 15/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | ChatGPT Work | Firefox | Manus |
|---|---|---|---|
| Plans | Free Free Trying a task or two on desktop. | FirefoxOur pick Free Everyone, with AI on or off as you choose. | Free Free Quick questions and seeing what it can do. |
PlusOur pick $20/mo Handing off a few jobs a week. | Smart Window beta Free Heavy researchers in the US, Canada or France. | ProOur pick From $20/mo, less with yearly billing Anyone who wants to hand off real research and build jobs. | |
Pro From $100/mo Anyone running agent tasks every day. | Pro (higher tier) From $40/mo, less with yearly billing Heavier users and anyone publishing websites with it. | ||
Business See website Teams that want shared admin and no training on their data. | Team From $20/seat/mo Teams that want shared credits and admin controls. | ||
Enterprise Custom Large organisations. | |||
| Which plan to pick | Try it on Plus with a couple of real jobs. If you hand it work most days you'll run out of credits, and that's when Pro or extra credits make sense. | 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. | Try the Free plan for a week to get a feel for how many credits a real task uses, then move to the $20 Pro tier. Only go higher if you run out most months or you want it to publish websites for you. |
Key features
| Attribute | ChatGPT Work | Firefox | Manus |
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Pros and cons
| Attribute | ChatGPT Work | Firefox | Manus |
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Who each one is for
| Attribute | ChatGPT Work | Firefox | Manus |
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Questions people ask
Which is better, ChatGPT Work, Firefox or Manus?
ChatGPT Work scores highest overall in our ratings (ChatGPT Work 4.0/5, Firefox 3.6/5 and Manus 3.7/5). ChatGPT Work is best for sorting inbox and calendar admin across connected apps and weekly reports and reviews on a schedule. Firefox is best for Keeping AI out of the browser entirely and using your own ChatGPT or Claude in a sidebar. Manus is best for multi-step research with a report at the end and lead lists and data gathering.
Which is cheaper, ChatGPT Work, Firefox or Manus?
ChatGPT Work: There's a free plan, and paid plans start at $20/mo. Firefox: It's free and open source. Manus: There's a free plan, and paid plans start at From $20/mo.
Which is easier to use, ChatGPT Work, Firefox or Manus?
Manus rates highest for ease of use in our scores. People who want to hand off whole tasks and don't want to build the automation themselves.
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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