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Duck.ai alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Duck.ai: curated model list, not every model, and no memory, connectors or agent tools. We ranked 5 alternatives by how directly each one replaces Duck.ai, then by reviews, real visits and how recently each app's facts were checked against its own website. Lumo currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Jan logoJanOpen sourceYesWindows, macOS, Linux5 of 559.6
2ChatGPT logoChatGPTFree plan + paidNoWeb, Windows, macOS +25 of 557.2
  1. Jan logo

    1. JanTop pick

    Best for: Privacy-minded people who want an open-source, offline ChatGPT-style app

    Open sourceWindows, macOS, Linux

    59.6

    score / 100

    Why switch from Duck.ai

    Fully offline: run models on your own computer so nothing leaves it.

    Pros

    • Free and open source
    • Works offline with no account
    • Local models and cloud APIs in one app

    Cons

    • Smaller model browser than LM Studio
    • Large models need strong hardware
    • Fast release pace can bring bugs
    Visit Jan Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Jan a good Duck.ai alternative?

    Verified facts

    5 of 5 verified
    Positioning
    Open-source ChatGPT and Claude replacement
    Checked Oct 25, 2026jan.ai(opens source in a new tab)
    Platforms
    macOS, Windows, Linux
    Checked Oct 25, 2026jan.ai(opens source in a new tab)
    Offline mode
    Yes
    Checked Oct 25, 2026jan.ai(opens source in a new tab)
    Price
    Free and open source
    Checked Oct 25, 2026jan.ai(opens source in a new tab)
    Windows requirement
    Windows 10 or higher
    Checked Oct 25, 2026jan.ai(opens source in a new tab)
  2. ChatGPT logo

    2. ChatGPT

    Best for: Anyone who wants the most widely used all-round assistant with the broadest feature set

    Free plan + paidWeb, Windows, macOS, iOS, Android

    57.2

    score / 100

    Why switch from Duck.ai

    Much more capable assistant, if you accept an account and stored chats.

    Pros

    • Broadest feature set: voice, images, files, search, agents and coding
    • Huge ecosystem of custom GPTs and third-party apps
    • Polished apps on every major platform

    Cons

    • Best models and higher limits require a paid plan
    • Personal chats can be used for training unless you opt out
    • Plans and usage limits change frequently
    Visit ChatGPT Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is ChatGPT a good Duck.ai alternative?

    Verified facts

    5 of 5 verified
    Free plan
    Yes
    Checked Oct 25, 2026developers.openai.com(opens source in a new tab)
    Go plan
    $8/month
    Checked Oct 25, 2026developers.openai.com(opens source in a new tab)
    Plus plan
    $20/month
    Checked Oct 25, 2026developers.openai.com(opens source in a new tab)
    Pro plans
    $100, $200 or $500/month
    Checked Oct 25, 2026developers.openai.com(opens source in a new tab)
    Business plan
    $20 per user/month
    Checked Oct 25, 2026developers.openai.com(opens source in a new tab)

The best Duck.ai alternative for…

The highest-ranked app in this list for each need.

Lumo logo

Best Duck.ai alternative for most people

Lumo

Encrypted chat history with an account, from privacy company Proton.

Jan logo

Best Duck.ai alternative for a free option

Jan

Fully offline: run models on your own computer so nothing leaves it.

Venice logo

Best Duck.ai alternative for a free plan you can upgrade

Venice

Private chat that stores history only in your browser, with more models.

HuggingChat logo

Best Duck.ai alternative for open source

HuggingChat

Free access to a much wider choice of open models.

HuggingChat logo

Best Duck.ai alternative for self-hosting

HuggingChat

Free access to a much wider choice of open models.

ChatGPT logo

Best Duck.ai alternative for Mac

ChatGPT

Much more capable assistant, if you accept an account and stored chats.

Jan logo

Best Duck.ai alternative for Windows

Jan

Fully offline: run models on your own computer so nothing leaves it.

Jan logo

Best Duck.ai alternative for Linux

Jan

Fully offline: run models on your own computer so nothing leaves it.

Lumo logo

Best Duck.ai alternative for iPhone and Android

Lumo

Encrypted chat history with an account, from privacy company Proton.

Lumo logo

Best Duck.ai alternative for working in the browser

Lumo

Encrypted chat history with an account, from privacy company Proton.

Duck.ai alternatives: common questions

What is the best alternative to Duck.ai?

Lumo ranks first right now. Encrypted chat history with an account, from privacy company Proton. Venice and Jan follow it in our ranking.

Is there a free alternative to Duck.ai?

Yes. Lumo (free plan + paid), Venice (free plan + paid), Jan (open source) and ChatGPT (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Duck.ai?

Yes: Jan and HuggingChat. HuggingChat can also be self-hosted.

Which Duck.ai alternatives work on Linux?

Jan runs on Linux.

Why do people switch from Duck.ai?

The complaints we hear most: curated model list, not every model; no memory, connectors or agent tools; better models need a paid DuckDuckGo subscription.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Duck.ai, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.