Side-by-side comparison · AI Assistants & LLMs
Duck.ai vs Google AI Studio vs LMArena
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: Anyone who wants quick AI help without an account or a record of what they asked.
Pick it if: Founders, marketers and developers who want to test Google's models or build a quick app without paying.
Pick it if: Anyone choosing between AI tools, and people who want to know which model is leading right now.
Duck.ai scores highest overall, but LMArena gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | Duck.ai | Google AI Studio | LMArena |
|---|---|---|---|
| In one line | DuckDuckGo's private AI chat: no account, no stored prompts, free to use. | Google's free workspace for testing Gemini models and building apps from a description. | Free site where you compare AI models side by side and see which ones people rate best. |
| Pricing model | Freemium | Freemium | Free |
| Starting price | $9.99/mo or $99.99/yr | $19.99/mo | Free |
| Free plan | Yes | Yes | Yes |
| Works with Claude Code | No | Yes | No |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Duck.ai | Google AI Studio | LMArena |
|---|---|---|---|
| Overall rating | 4.0Winner | 3.9 | 3.8 |
| Ease of useHow quickly someone non-technical gets value from it. | 4.5 | 3.0 | 3.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 3.0 | 4.5 | 4.0 |
| Output qualityHow good the results are before you fix them. | 3.5 | 4.5 | 3.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.5 | 4.0 | 5.0 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.5 | 3.5 | 3.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Duck.ai | Google AI Studio | LMArena |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | Yes | Yes |
| Mobile app | Yes | No | No |
| Desktop app | Yes | No | No |
| Browser extension | Yes | No | No |
| API access | No | Yes | No |
| Teams & business | |||
| Team workspace | No | No | No |
| Enterprise plan or SSO | No | Yes | No |
| Connects to other apps | No | Yes | No |
| Open source or self-hosted | No | No | No |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | Yes | Yes | Yes |
| Makes images | Yes | Yes | Yes |
| Makes video | No | Yes | Yes |
| Writes code | Yes | Yes | Yes |
| Runs agents or automations | No | Yes | No |
| Learns your brand or style | No | No | No |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 9/ 17 | 11/ 17 | 7/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Duck.ai | Google AI Studio | LMArena |
|---|---|---|---|
| Plans | FreeOur pick Free Quick private questions with no sign-up. | FreeOur pick Free Testing models and building small prototypes. | FreeOur pick Free Everyone. |
Plus $9.99/mo or $99.99/yr Regular users who also want a VPN. | Google AI Pro $19.99/mo Regular users who also want the Gemini app upgrade. | ||
Pro $19.99/mo or $199.99/yr People who want the top models privately. | Google AI Ultra From $99.99/mo Heavy builders who want the highest limits. | ||
Paid API Pay as you go, $10 prepay to start Apps in production and anyone with sensitive data. | |||
| Which plan to pick | Stay on Free unless you also want a VPN. Plus is good value if you'd pay for a VPN anyway. Pro is $19.99, the same as ChatGPT Plus or Claude Pro, so only pick it if anonymity matters more to you than features. | Start free. If you're putting anything sensitive in or building something people will use, switch to a paid API key so your prompts aren't used for training. Google AI Pro only makes sense if you'd use the Gemini app upgrade too. | There's nothing to buy. Use it free, and pay for whichever assistant comes out best for your work. |
Key features
| Attribute | Duck.ai | Google AI Studio | LMArena |
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Pros and cons
| Attribute | Duck.ai | Google AI Studio | LMArena |
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Who each one is for
| Attribute | Duck.ai | Google AI Studio | LMArena |
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Questions people ask
Which is better, Duck.ai, Google AI Studio or LMArena?
Duck.ai scores highest overall in our ratings (Duck.ai 4.0/5, Google AI Studio 3.9/5 and LMArena 3.8/5). Duck.ai is best for quick private questions and Using AI without signing up. Google AI Studio is best for prototyping an app or internal tool by describing it and testing new Gemini models before they reach the app. LMArena is best for choosing between AI models with your own prompts and checking which model leads after a launch.
Which is cheaper, Duck.ai, Google AI Studio or LMArena?
Duck.ai: There's a free plan, and paid plans start at $9.99/mo or $99.99/yr. Google AI Studio: There's a free plan, and paid plans start at $19.99/mo. LMArena: It's free to use.
Which is easier to use, Duck.ai, Google AI Studio or LMArena?
Duck.ai rates highest for ease of use in our scores. Anyone who wants quick AI help without an account or a record of what they asked.
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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