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Alternatives

Products that do what PromptMux does

Compare LLM responses side-by-side, visually

  1. 1AS

    Any Ideas/Suggestions are welcome :)

    2024 · mitenmit.github.io

  2. 2

    Use multiple LLMs at once, privately!

    20d ago · transferllm.com

  3. 3
    Prompto202

    Interact with various LLMs in your browser

    2024

  4. 4

    Markdown Sidebar for AI Prompts

    Apr 2026 · sites.google.com

  5. 5

    Your ChatGPT prompt engineering community with free prompts.

    2023

  6. 6
    Prompt138

    A command line application to interact with ChatGPT's API

    2023

  7. 7

    Your prompt library across ChatGPT, Claude & Gemini

    Jul 2026

  8. 8
    Scroll93

    Better navigation for ChatGPT, Claude, + Gemini

    Dec 2025

  9. 9

    Compare ChatGPT vs Claude vs Gemini & more in 1 click

    Jun 2026 · supercompareai.com

  10. 10

    Save 80% on AI Subscriptions and prompt up to 4 models!

    2025

  11. 11

    Free master prompts for ChatGPT, Claude, Gemini & more

    Mar 2026 · understandingai.net

  12. 12CW

    Hello HN! I was fed up switching between multiple UIs to ask GPT, Claude, etc… the same question and comparing the answers. So I built a way to ask multiple models the same question efficiently by having the LLM compare the responses and only show you new and valuable information from the 2nd model. This way you still get a fast response as normal from the 1st model, but also get any added value provided by the 2nd model. Initially I built my own UI to use this, but stumbled upon Open WebUI (formerly Ollama WebUI) which is fantastic, but is made more for local access to LLMs. So I talked to…

    2025 · polychat.co

  13. 13GV

    Hey HN, I just updated my project that compares some LLMs. It uses your prompt for all the models and runs at the same time. You can see the results being generated in real-time and decide what's the best for your use case. I'm open to any suggestions and feedback. Thanks!

    2024 · geminivsgpt.com

  14. 14

    The context manager and skills library for marketing teams

    Apr 2026 · promptr.ai

  15. 15PC

    I built PolyGPT to solve a problem I had: constantly tab-switching between ChatGPT, Claude, and Gemini to compare their responses. It's a desktop app (Mac/Windows/Linux) that lets you type a prompt once and see all three AI models respond simultaneously in a split view. Useful for: - Comparing technical explanations - Getting multiple perspectives on code problems - Fact-checking answers across models The app is free, open source, and runs locally - your credentials stay on your machine. Download: https://polygpt.app Source:…

    Nov 2025 · polygpt.app

  16. 16LL

    Author here. I wanted to keep my conversation with #Gemini about code handy while discussing something creative with #ChatGPT and using #DeepSeek in another window. I think it's a waste to have Electron apps and so wanted to chat with LLMs on my own terms. When I discovered the llm CLI tool I really wanted to have convenient and pretty looking access to my conversations, and so I wrote gtk-llm-chat - a plugin for llm that provides an applet and a simple window to interact with LLM models. Make sure you've configure llm first (https://llm.datasette.io/en/stable/) I'd…

    2025 · github.com

  17. 17

    Compare LLMs across models. One API call.

    Mar 2026

  18. 18

    "Better prompts. Better results. In seconds."

    Apr 2026 · promptmelo.com

  19. 19TA
  20. 20

    Find which AI wins for YOUR prompts. Test 100+ models free.

    Dec 2025

  21. 21

    Save & reuse AI prompts in 1 click — ChatGPT, Claude & more

    May 2026 · mypromptsvault.com

  22. 22

    Compare ChatGPT, Claude, and Gemini side-by-side

    Nov 2025

  23. 23LO

    Hi HN! I built LLM OneStop (https://www.llmonestop.com), a unified interface for accessing multiple AI language models in one place. The main problem I wanted to solve: constantly switching between different AI platforms, managing multiple subscriptions, and losing conversation context when comparing outputs across models. Key features: Switch between GPT-4, Claude, Gemini, Llama, and other models mid-conversation Compare responses side-by-side Single interface instead of juggling multiple tabs/subscriptions Free tier available to try it out (no credit card needed) "Connect"…

    Nov 2025 · llmonestop.com

  24. 24AL

    any-llm is a library that provides unified access to multiple LLM providers. switching between providers like OpenAI, Anthropic, Google, Mistral, and even Ollama is just a string change. This demo makes it easy to look at and compare responses from different models. Interesting to see how ChatGPT, Claude, Gemini, and local models each reason through the same problems. Let us know what you think!

    2025 · github.com

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