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AI · alternatives · 2026

24 alternatives to OpenaiAPITestTool

Free Validate your OpenAI API key

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

  1. 1

    Pushing the frontier of cost-effective reasoning

    2025 · its alternatives →

  2. 2OS

    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 →

  3. 3

    OpenAI's most advanced model, o1 API to third-party devs

    2024 · its alternatives →

  4. 4
    GptBoard▲109

    Experience the power of GPT-3 AI in your iOS keyboard

    2023 · its alternatives →

  5. 5

    OpenAI's smartest and most intuitive to use model yet

    Apr 2026 · openai.com · its alternatives →

  6. 6

    Advanced Visual Reasoning & Agentic Tool Use

    2025 · its alternatives →

  7. 7

    A showcase of 80+ GPT-3 resources, examples, and use cases

    2021 · its alternatives →

  8. 8G3

    2022 · musings.yasyf.com · its alternatives →

  9. 9

    Complete index To Chatgpt, GPT3 tools & OpenAI apps

    2023 · its alternatives →

  10. 10

    Bring GPT-4o quality images to your apps

    2025 · its alternatives →

  11. 11

    gpt-oss-120b and gpt-oss-20b open-weight language models

    2025 · openai.com · its alternatives →

  12. 12

    Monetise your GPTs with in-chat payments in the OpenAI Store

    2024 · its alternatives →

  13. 13

    Advanced reasoning models with safety-first innovation.

    2024 · its alternatives →

  14. 14

    Use GPT3 from your notes

    2023 · its alternatives →

  15. 15
    GPT Auth▲402

    Authentication for GPTs on GPT store

    2024 · its alternatives →

  16. 16
    GPT-5▲127

    OpenAI’s most advanced model

    2025 · openai.com · its alternatives →

  17. 17

    Curated list of OpenAI's GPT3 demos

    2020 · its alternatives →

  18. 18
    Gapt.ai▲116

    First alternative to GPT-3 API

    2021 · its alternatives →

  19. 19

    Bring OpenAI/GPT-3 into HubSpot Workflows

    2023 · its alternatives →

  20. 20

    Dive in Siri using GPT-3.5 Turbo

    2023 · its alternatives →

  21. 21
    AnyAPI▲160

    Add AI power to your product in minutes

    2023 · its alternatives →

  22. 22

    A Raycast extension that lets you interact with OpenAI GPT3

    2022 · its alternatives →

  23. 23

    Analyze your OpenAI API usage and logs in real-time

    2023 · its alternatives →

  24. 24IB

    Code base is here https://github.com/clairefro/aribotle Screenshots and learnings in tweet https://twitter.com/clairefroe/status/1684692302843838464?t=... I experimented with a "Bring your own API Key" approach that I think is sufficiently secure. I'll Venmo $50 to whoever can hack my OpenAI API key

    2023 · twitter.com · 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 →