Dev tools · alternatives · 2026
24 alternatives to MockGPT
A Mock API for Developing and Testing Generative AI Apps
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MockGPT launched in 2024; newer entries below may have overtaken it.
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Generate customized, realistic mock data & APIs, via GPT
2023 · its alternatives →
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- 3IR
2023 · sagittarius.greg.technology · its alternatives →
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Generate custom data & API to build apps in less than 30s
2021 · its alternatives →
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Mocke▲539Mock email campaigns: know your reply rate without launching
2025 · mocke.co · its alternatives →
- 6MO
2019 · mockit.netlify.com · its alternatives →
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Free mock api generator for developers | instant test data
Nov 2025 · fakeapifordevs.vercel.app · its alternatives →
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MockAPI Dog▲122Instant mock REST & LLM APIs - free, no signup required
Feb 2026 · mockapi.dog · its alternatives →
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- 17AG
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 →
- 18
Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out. Mocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required. You can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time. With v4, I also added MCP support, so coding…
25d ago · getmocktail.com · its alternatives →
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- 20WA
2020 · github.com · its alternatives →
- 21PF
I was frustrated that open ai's playground lacks function calls, so I wrote my own more similar to ChatGpt! Now I can: * use the same models I program against * have access to function calls * can see how much it's costing me Side benefit: I can share my API key with a friend so they can use Gpt3.5 & 4 as open ai took their deposit but still labelled their account as free tier - mistakes happen. Prerequisite: an open ai api key https://github.com/acover288/playgpt Use at your own risk as I blindly installed npm packages.
2023 · gpt342.s3.us-east-1.amazonaws.com · its alternatives →
- 22OM
Hi HN! I'm Ankit, the founder of Beeceptor, a request mocking and intercepting tool. This time, I built something new to address a pain I’ve personally felt (and heard from dozens of QA, frontend, and platform teams): making OpenAPI specs actually useful during development. API contracts just sit around as docs often. What if you could 'activate' them, instantly have a realistic, hosted mock server-with contract validation, smart test data, and early usage? So I made _Mockaroo for OpenAPI_, but with brains. It spins up a hosted mock server from your spec in one click. It: - Generates…
2025 · beeceptor.com · its alternatives →
- 23AF
2021 · mockachino.com · its alternatives →
- 24ST
2024 · endpts.io · its alternatives →
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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 →