Alternatives

Products that do what Your Model does

OpenAI-compatible API with one key and prepaid balance

1. 1
   Merlin Unified API▲310

   One unified API for all AI models like Gemini, GPT-4, DALL-E

   2023

2. 2OS
   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

3. 3
   GPT Builder Tools by Top Road (YC W22)▲305

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

   2024

4. 4
   OpenAI Open Models▲480

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

   2025

5. 5
   OpenAI o1 API ▲458

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

   2024

6. 6
   AskCodi▲230

   Custom LLMs, without training. Use via openai compatible api

   Nov 2025

7. 7
   GptBoard▲109

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

   2023

8. 8
   AnswerFlow AI▲155

   Build unlimited custom ChatGPT bots, with a lifetime license

   2023

9. 9FO
   Free OpenAI API Access with ChatGPT Account▲48

   Mar 2026 · github.com

10. 10
    Chat Interface for OpenAI Assistants▲119

    ChatGPT-like customer interactions in a website widget

    2024

11. 11
    ModelHub API▲4

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

    Jun 2026

12. 12
    BlitzClawAI▲1

    One OpenAI-compatible API for every build

    19d ago · api.blitzclawai.com

13. 13
    ApiHub: One API for Leading AI Models▲2

    One API for leading AI models and video generation

    26d ago · video.gqaiapp.com

14. 14
    Anonkey▲2

    OpenAI API with 80% discounts off official pricing!

    May 2026

15. 15
    ApiLink▲4

    One API for GPT, Claude, Gemini & every major AI model

    May 2026 · apilink.io

16. 16
    Run open-weight OCR, VLM and vision models behind one API▲5

    The OpenAI-compatible gateway for visual AI. 21 visual models behind one chat-completions endpoint. Token and per-image pricing, structured outputs, BYOK ready.

    2d ago · vlmrun.com

17. 17
    Omnibridge▲2

    One API key. 16+ free AI providers. Zero limits.

    Jun 2026 · omnibridge-dev.vercel.app

18. 18
    Velokey▲4

    Access AI models through one API and save 20–80% on costs.

    Jul 2026 · velokey.ai

19. 19
    euromodels▲2

    One API key. Every AI model. No integrations.

    Jul 2026 · euromodels.xyz

20. 20
    Proxyify▲1

    One API key for GPT, Claude, Gemini & 100+ AI models

    May 2026 · proxyify.dev

21. 21
    OneMux▲10

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

    Jul 2026 · onemux.net

22. 22
    WorldGate API▲3

    #ai #api #provider

    Jul 2026 · worldgateapi.com

23. 23FC
    Forge – Connect multiple AI models through a single API▲5

    Hey HN, We just recently launched Forge – an AI model API platform that lets you access and call AI models from multiple providers in one place. Find it on our website: https://tensorblock.co/forge Some key features: Unified API Key – Store multiple provider API keys and access all with a single Forge API key. OpenAI API Compatible – Drop-in replacement for any application that uses OpenAI’s API. Advanced Security – Strong Encryption for API keys with JWT-based authentication. Client Management – Easy key and user management via included command-line interface. Open-source –…

    2025 · tensorblock.co

24. 24
    AIBridge▲2

    One API key, every AI model.

    May 2026 · aibridge-api.com

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