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AI · alternatives · 2026

24 alternatives to AIChat API

Affordable API - 50% cheaper than OpenAI, 0 migration cost

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1

    Pushing the frontier of cost-effective reasoning

    2025 · openai.com · its alternatives →

  2. 2

    A simple Go package for unified AI chat management across OpenRouter, OpenAI, Google GenAI, and more, with support for tool calling and S3-compatible user sessions

    2023 · aichat.fm · its alternatives →

  3. 3

    Drop-in AI API replacement — cheaper, same SDK

    Jun 2026 · its alternatives →

  4. 4

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

    Mar 2026 · github.com · its alternatives →

  5. 5

    An API from OpenAI for ChatGPT

    2023 · openai.com · its alternatives →

  6. 6

    The fast, easy and cheap OpenAI alternative

    2023 · lemonfox.ai · its alternatives →

  7. 7
    AiPrice▲96

    API for calculating OpenAI LLM tokens and pricing

    2023 · aiprice.dev · its alternatives →

  8. 8

    Custom ChatGPT agents with your own data

    2023 · chaindesk.ai · its alternatives →

  9. 9

    No-code AI chat bot builder, powered by OpenAI API

    2021 · quickchat.ai · its alternatives →

  10. 10

    Hello HN, I’ve always loved building frontend-only apps—those you can prototype over a weekend, host for free on GitHub Pages, and scale to millions of users. Unfortunately, AI-enabled apps complicate things, as exposing your OpenAI key to the world is obviously a no-go. This also means mobile developers often have to run their own servers. That’s why I built ServerlessAI, an API gateway that lets you securely call multiple AI providers directly from client side using OpenAI-compatible APIs. You can authenticate users through any identity provider, like Google or Apple, and set per-user…

    2024 · serverlessai.dev · its alternatives →

  11. 11

    Data APIs for AI agents & developers — free to start

    Feb 2026 · apipick.com · its alternatives →

  12. 12

    One API Key. 45+ AI Models. 43x Cheaper Than OpenAI.

    Jun 2026 · its alternatives →

  13. 13

    Harness the power of AI with a single click

    2023 · smaihub.com · its alternatives →

  14. 14

    AI API, 80% cheaper than OpenAI

    Mar 2026 · github.com · its alternatives →

  15. 15
    Defapi▲5

    Affordable AI APIs

    Jan 2026 · defapi.org · its alternatives →

  16. 16IM

    I was tired of paying monthly subscriptions for all my AI tools and I wanted to pay just for what I use so I combined the AI chats I use to create my own chat - MyChat (pun intended) MyChat is an all-in-one chat bot that has a pay-as-you-go business model. The tech stack I used was NextJS, TypeScript, MongoDB, Clerk, TailwindCSS, ShadCN, Stripe, the OpenAI API hosted on Hostinger with Coolify. The code base is currently around 3500 lines of code. (About 500 of them are redundant code) The web app itself is not complicated the only complex thing in it is the math that's mapping the different…

    2025 · mychat.click · its alternatives →

  17. 17

    Are you spending hundreds of dollars a month on AI coding costs? I built European Swallow AI, an API that uses reasoning models (Claude, Deepseek) for thinking and cheaper specialized coding models (Qwen, Grok) to write code, so you can save token costs while still getting high quality code. With an OpenAI formatted endpoint you can try European Swallow in Cursor, Typing Mind, Xibe AI and your own custom apps. During testing, European Swallow scored 80.5% on Big Code Bench and over 90% on the HumanEval+. It averaged $2.60 per million tokens compared with the $15 per million output tokens of…

    2025 · europeanswallowai.com · its alternatives →

  18. 18

    Should I use ChatGPT or the API? Find out what's cheaper

    2024 · quartzite.ai · its alternatives →

  19. 19

    No More ChatGPT Subscriptions! Pay-As-You-Go!

    2025 · mychat.click · its alternatives →

  20. 20

    OpenAI-compatible API workflow, 25% lower cost

    Apr 2026 · apibest.ai · its alternatives →

  21. 21

    Low-cost AI API gateway for OpenAI-compatible developer tool

    Jul 2026 · yesapi.online · its alternatives →

  22. 22
    OneMux▲10

    Low-cost, OpenAI-compatible API for multiple AI models

    Jul 2026 · onemux.net · its alternatives →

  23. 23

    Drop-in replacement for OpenAI's powerful new Assistants API

    2023 · ibm.com · its alternatives →

  24. 24

    90+ AI models, single API, pay with crypto — 70% cheaper

    Jun 2026 · 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 →