Free AI APIs for Prototyping - 11 Free AI tools

Macaly v2.0

AI website builder with built-in database, hosting & more

Websites

Open

53,555 www.macaly.com

I tested. Loved it. Tried with 3 different websites. Full Marks to the output! Worth paying for!

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🇨🇿 Czech Republic

Released 10mo ago

Free + from $25/mo

62,119

105

3.7

Fabricate v2.0

Fabricate builds entire web apps from a single prompt - free!

Vibe coding

Open

amazing apps

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Released 4mo ago

Free + from $25/mo

7,774

84

4.1

JustCopy.ai

Clone production-ready apps instantly.

Websites

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31,286 justcopy.ai

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Released 9mo ago

Free + from $49.99/mo

37,040

62

5.0

AI Builder | Hostinger Horizons v2.1.3

Build web apps and websites without writing any code.

Websites

Open

53,922 www.hostinger.com

Hostinger

🛠️ 12 tools

🎨 Design & Editing • Easier image editing • Improved text editing mode • Better-looking projects from first prompt • One-click project duplication • Improved desktop and mobile responsiveness

4

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🇱🇹 Lithuania

Released 4d ago

Free + from $6.99/mo

59,422

82

5.0

n8n

Build and deploy AI agents and workflows – from prototype to production.

Workflow automation

Open

3,428 n8n.io

Love that it’s open source. I built a whole GPT content pipeline in a weekend.

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🇩🇪 Germany

Released 2y ago

Free + from $21.45/mo

7,909

74

4.3

Fine-Tuner.ai

Build AI assistants in minutes, no code needed.

Agents

Open

1,288 fine-tuner.ai

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🇩🇪 Germany

Released 3y ago

Free + from $29/mo

5,033

88

5.0

Devento

Own the web. Build full-stack production ready apps with AI.

Vibe coding

Open

34,615 devento.ai

huge timesaver, had an ideea for an app to help me with my invoices and it made a working website without me needing to set up anything, I didn't even have to leave the chat to do this

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Released 9mo ago

Free + from $20/mo

37,476

67

4.7

HappySeeds 1.1.3

Turn ideas into AI-powered apps instantly.

Apps

Open

13,530 happyseeds.ai

HappySeeds

🛠️ 1 tool

New: Added a batch of new templates covering more scenes and use cases, ready to use out of the box Improved: Polished some UX details for smoother operation Fixed: Fixed some known issues to improve stability

3

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🇭🇰 Hong Kong

Released 5d ago

Free + from $19.90/mo

16,080

51

5.0