AI · alternatives · 2026

24 alternatives to Free API to AI Models.

Free API for ChatGPT and more

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Free API to AI Models. launched in 2023; newer entries below may have overtaken it.

1. 1
   ChatGPT API▲245

   An API from OpenAI for ChatGPT

   2023 · openai.com · its alternatives →

2. 2
   Chatgot▲214

   Chat freely, got every AI assistants here for you

   2023 · chatgot.io · its alternatives →

3. 3
   ChatBetter▲329

   Use ChatGPT, Claude, and Gemini Side-By-Side

   2025 · chatbetter.com · its alternatives →

4. 4
   OpenBotfree▲362

   Grok Bot alternative: free, local, open-source, multiplayer

   25d ago · openbot.run · its alternatives →

5. 5
   ChatbotGPT▲123

   Custom ChatGPT agents with your own data

   2023 · chaindesk.ai · its alternatives →

6. 6
   Chatpad AI▲142

   Not just another ChatGPT user-interface

   2023 · chatpad.ai · its alternatives →

7. 7
   Open source alternative to ChatGPT and ChatPDF-like AI tools▲234

   Hey everyone, We have been building SecureAI Tools -- an open-source application layer for ChatGPT and ChatPDF-like AI tools. It works with locally running LLMs as well as with OpenAI-compatible APIs. For local LLMs, it supports Ollama which supports all the gguf/ggml models. Currently, it has two features: Chat-with-LLM, and Chat-with-PDFs. It is optimized for self-hosting use cases and comes with basic user management features. Here are some quick demos: * Chat with documents using OpenAI's GPT3.5 model: https://www.youtube.com/watch?v=Br2D3G9O47s * Chat with documents…

   2023 · github.com · its alternatives →

8. 8
   AI Buddy▲86

   ChatGPT in all input fields

   2023 · ai-buddy.co · its alternatives →

9. 9
   GPTInsiders.com▲80

   Build any AI chatbot with our free template + OpenAI API

   2023 · its alternatives →

10. 10
    Free OpenAI API Access with ChatGPT Account▲48

    Free AI with your ChatGPT account. Contribute to EvanZhouDev/openai-oauth development by creating an account on GitHub.

    Mar 2026 · github.com · its alternatives →

11. 11
    Cuely▲140

    Pay-as-you-go chatGPT Plus with 5M free token credits

    2023 · cuely.ai · its alternatives →

12. 12
    Lemonfox.ai▲157

    The fast, easy and cheap OpenAI alternative

    2023 · lemonfox.ai · its alternatives →

13. 13
    CacheGPT▲9

    Free AI chat with zero setup

    2025 · cachegpt.app · its alternatives →

14. 14
    LetsAsk.AI▲158

    ChatGPT with your data on your website, Discord & more

    2023 · letsask.ai · its alternatives →

15. 15
    IdeaGPT▲100

    100+ new AI startups people built using GPT-4 free

    2023 · pr1ncesingh.gumroad.com · its alternatives →

16. 16
    ChatGPT4o▲59

    Free Chat GPT 4o (GPT-4o)

    2024 · its alternatives →

17. 17
    ai-o▲92

    Browse the web and chat with AI, side by side

    2024 · ai-o-app.vercel.app · its alternatives →

18. 18
    GPTeammate▲74

    A free ChatGPT integration for slack

    2023 · its alternatives →

19. 19
    Whispr▲81

    Alternative to ChatGPT

    2023 · its alternatives →

20. 20
    PastaGPT▲70

    Enhance the taste of your pasta with AI

    2023 · pastagpt.it · its alternatives →

21. 21
    GPT4Free▲6

    ChatGPT without APIs, logins, or restrictions

    2024 · gpt4free.io · its alternatives →

22. 22
    Open-Source AI Playground▲47

    Use and compare GPT-6, Claude 5, Gemini 3 and more chatbots simultaneously

    2023 · chathub.gg · its alternatives →

23. 23
    NUMAI▲11

    NUMAI: Your Trusted Companion

    2025 · milkyai.vercel.app · its alternatives →

24. 24
    ChatGPT5.so: Free GPT‑5 Online▲12

    Free using ChatGPT5 Online With ChatGPT5.so

    2025 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →