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Side-by-side comparison · AI Assistants & LLMs

ChatGPT vs Duck.ai vs Google AI Studio

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Best overall

ChatGPT

4.3

From $8/mo

Duck.ai

4.0

From $9.99/mo or $99.99/yr

Google AI Studio

3.9

From $19.99/mo

Comparing 3 tools, the maximum.

At a glance

Best overall

Pick it if: Anyone who wants one general-purpose assistant that handles most everyday jobs.

Best value

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.

ChatGPT scores highest overall, but Duck.ai gives you more for your money. Which one is right comes down to what you value most.

Overview

AttributeChatGPTDuck.aiGoogle AI Studio
In one lineOpenAI's all-rounder: chat, images, voice, web search and agents in one app.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.
Pricing modelFreemiumFreemiumFreemium
Starting price$8/mo$9.99/mo or $99.99/yr$19.99/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.

AttributeChatGPTDuck.aiGoogle AI Studio
Overall rating4.3Winner4.03.9
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.5
3.0
FeaturesHow completely it covers the job it's built for, and how well the pieces fit together.
5.0
3.0
4.5
Output qualityHow good the results are before you fix them.
4.0
3.5
4.5
Value for moneyWhat you get for the price, including the free plan.
4.0
4.5
4.0
Speed & reliabilityHow fast it is and how often it falls over.
4.0
4.5
3.5

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeChatGPTDuck.aiGoogle AI Studio
Access & platform
Free plan Yes Yes Yes
Mobile app Yes Yes No
Desktop app Yes Yes No
Browser extension Yes Yes No
API access Yes No Yes
Teams & business
Team workspace Yes No No
Enterprise plan or SSO Yes No Yes
Connects to other apps Yes No Yes
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 No Yes
Writes code Yes Yes Yes
Runs agents or automations Yes No Yes
Learns your brand or style Yes No No
Works in many languages Yes Yes Yes
Capabilities score15/ 179/ 1711/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeChatGPTDuck.aiGoogle AI Studio
Plans

Free

Free

Trying it out and everyday questions.

FreeOur pick

Free

Quick private questions with no sign-up.

FreeOur pick

Free

Testing models and building small prototypes.

Go

$8/mo

Casual users who hit the free limits.

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.

PlusOur pick

$20/mo

Anyone using it most days for work.

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.

Pro

From $100/mo

Heavy users and people living in Codex.

Paid API

Pay as you go, $10 prepay to start

Apps in production and anyone with sensitive data.

Business

See website

Teams from 2 people up.

Which plan to pickThe free plan is now good enough to use properly, so stay on it until the image, voice or research limits annoy you. Plus is the sensible upgrade. Only look at Pro if you run Codex or deep research all day, and read the current tier details first: Pro 200 now comes with a smaller allowance than it did before 29 September.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.

Key features

AttributeChatGPTDuck.aiGoogle AI Studio
Standout features
  • Image generation and editing
  • Voice mode
  • Deep research
  • ChatGPT Work
  • Plugins and connectors
  • Codex and Sites
  • No account needed
  • Anonymised prompts
  • Choice of models
  • Voice chat and images
  • Local chat history
  • Built into the browser
  • Playground
  • Build mode
  • Image, speech and video models
  • API keys
  • Long context
  • Export to Antigravity

Pros and cons

AttributeChatGPTDuck.aiGoogle AI Studio
Pros
  • The widest set of built-in tools of any assistant
  • Free plan includes unlimited text chat with GPT-6 Luna
  • Image generation and voice mode are the best in the category
  • Huge ecosystem of plugins, connectors and guides
  • One subscription covers the Codex coding agent too
  • No account, and prompts are anonymised and not used for training
  • Free access to models from OpenAI, Anthropic and Mistral in one place
  • Fast, clean and easy for anyone to use
  • Paid plans bundle a VPN and identity protection
  • Free access to Google's Flash models with full control over settings
  • Build mode turns a description into a working, publishable app
  • Handles very long documents, audio and video
  • The quickest way to get a Gemini API key
Cons
  • Writing sounds generic unless you work hard on the prompt
  • Plans and limits change often, and Pro now runs to $500 a month
  • Free and Go plans may show ads
  • It's confident when it's wrong, so check facts before you publish
  • Custom GPTs are being retired, so anything built on them needs moving to plugins
  • Free models are the small versions, so answers trail paid ChatGPT or Claude
  • No projects, connectors or spreadsheet uploads, and PDFs are capped at 15 to 50 pages
  • Usage limits aren't published as numbers
  • Privacy rests on DuckDuckGo's contracts with the AI companies, and some users report chat sync errors between devices
  • Free-tier prompts may be used to improve Google's products and reviewed by people
  • Daily limits are unpublished and users report them being cut, including for paying Pro subscribers
  • Confusing for non-developers, and it overlaps with the Gemini app and Antigravity
  • Gemini 4 Argon and Veo video need a paid plan or API billing
  • The site can be buggy and slow on long chats

Who each one is for

AttributeChatGPTDuck.aiGoogle AI Studio
Best for
  • Everyday questions and brainstorming
  • Making and editing images in the chat
  • Voice conversations on your phone
  • Quick research with web search
  • Quick private questions
  • Using AI without signing up
  • A shared or work computer
  • Voice chat and simple image making
  • Prototyping an app or internal tool by describing it
  • Testing new Gemini models before they reach the app
  • Getting a Gemini API key
  • Long documents and video transcription
You'll find it used by
  • Marketers
  • Small business owners
  • Students
  • Developers
  • Privacy-minded professionals
  • DuckDuckGo users
  • Casual AI users
  • Students
  • Developers
  • Founders
  • Technical marketers
  • AI hobbyists

Questions people ask

Which is better, ChatGPT, Duck.ai or Google AI Studio?

ChatGPT scores highest overall in our ratings (ChatGPT 4.3/5, Duck.ai 4.0/5 and Google AI Studio 3.9/5). ChatGPT is best for everyday questions and brainstorming and making and editing images in the chat. 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.

Which is cheaper, ChatGPT, Duck.ai or Google AI Studio?

ChatGPT: There's a free plan, and paid plans start at $8/mo. 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.

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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