Dev tools · alternatives · 2026

24 alternatives to AI-Powered Mock API Generator

Generate customized, realistic mock data & APIs, via GPT

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. AI-Powered Mock API Generator launched in 2023; newer entries below may have overtaken it.

1. 1
   Mock API Generator▲555

   Generate custom data & API to build apps in less than 30s

   2021 · retool.com · its alternatives →

2. 2
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

3. 3
   GPT WebApp Generator for React & Node.js▲272

   Let AI create a full-stack web app based on your description

   2023 · usemage.ai · its alternatives →

4. 4
   GPT Image API▲487

   Bring GPT-4o quality images to your apps

   2025 · developers.openai.com · its alternatives →

5. 5
   MockGPT▲11

   A Mock API for Developing and Testing Generative AI Apps

   2024 · mockgpt-3.fly.dev · its alternatives →

6. 6
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

7. 7
   Mock API Generator▲17

   API Mocks Prototyping

   2020 · mock-api-builder.vercel.app · its alternatives →

8. 8AG
   Auto-generate load tests/synthetic test data from OpenAPI spec/HAR file▲33

   Hey HN, We just shipped a new AI-powered feature... BUT the "AI" piece is largely in the background. Instead of relying on a chatbot, we've integrated AI (with strict input & output guardrails) into a workflow to handle two specific tasks that would be difficult for traditional programming: 1. Identifying the most relevant base URL from HAR files, since it would be tedious to cover every edge case or scenario to omit analytics, tracking, and other network noise. 2. Generating synthetic data for API requests by passing the API context and faker-js functions to GPT-4. The steps are broken down…

   2024 · docs.multiple.dev · its alternatives →

9. 9
   EazyMock▲9

   Mock APIs for your projects

   2024 · eazymock.net · its alternatives →

10. 10IR
    I Remade the Fake Google Gemini Demo, Except Using GPT-4 and It's Real▲434

    2023 · sagittarius.greg.technology · its alternatives →

11. 11
    Refraction▲156

    Generate unit tests, create docs and refactor code using AI.

    2023 · refraction.dev · its alternatives →

12. 12
    Generate quiz questions using AI▲161

    One of the coolest things I've been able to get GPT-3 to do is generate questions based on a piece of text. So, I built a simple site to help others do the same. Hopefully, this can be useful to teachers, trainers, or just anyone who wants to create a fun and unique quiz.

    2022 · quizgecko.com · its alternatives →

13. 13
    PasswordGPT▲71

    AI password generation with ChatGPT API

    2023 · passwordgpt.enriqueite.com · its alternatives →

14. 14
    ChatGPT Writer▲200

    ChatGPT AI based email generator

    2022 · its alternatives →

15. 15
    Pollux▲82

    Fake json data & json server mock API generator with JWT

    2021 · mohammedal-rowad.github.io · its alternatives →

16. 16
    EmailGPT - AI Email Generator▲102

    Create stunning marketing emails in a few clicks

    2023 · email.workgpt.us · its alternatives →

17. 17
    Mock Maker▲93

    Effortless mock APIs for seamless testing & prototyping

    2024 · its alternatives →

18. 18
    Fake API for Devs▲8

    Free mock api generator for developers | instant test data

    Nov 2025 · fakeapifordevs.vercel.app · its alternatives →

19. 19
    HTTP request code generator▲7

    Make HTTP requests for any language with AI-powered by GPT-3

    2022 · its alternatives →

20. 20
    DeepUnit▲121

    Generate verified unit tests with AI

    2023 · its alternatives →

21. 21
    AI GPT for Google Slides▲107

    Create Google Slides with AI and ChatGPT just in 1 click

    2023 · workspace.google.com · its alternatives →

22. 22
    Tactic Generate▲81

    Generate reports and analysis from your documents using GPT

    2023 · tactic.fyi · its alternatives →

23. 23
    Web App for generating mocked data from an OpenAPI specification▲19

    Progressive Web App for generating mocked data from an OpenAPI specification - Fredx87/openapi-mock-generator

    2020 · github.com · its alternatives →

24. 24
    Mock Turtle▲72

    GUI approach to generating realistic mock JSON data

    2022 · mockturtle.net · 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 →