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Alternatives

Products that do what Ask Harry Potter any question with GPT-4 does

I've enjoyed using CharacterAI a lot, and I also use OpenAI's API's for work and personal projects. I wanted to see if I could get the model to behave as believably as CharacterAI counterparts with just a system prompt - and I think it does. Curious if others agree.

  1. 1
    ChatGPT1,647

    Optimizing language models for dialogue

    2022 · chatgpt.com

  2. 2

    Building the next generation of conversational AI

    2023

  3. 3

    Interact with your favorite AI characters with ChatGPT

    2023

  4. 4

    Get instant feedback from AI characters for ideas & more

    2023

  5. 5
    GPT-41,161

    LLM that exhibits human-level performance

    2023 · openai.com

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    One click AI prompts inside ChatGPT, Bard & Claude

    2023

  7. 7

    Smarter, more conversational ChatGPT with new personalities

    Nov 2025

  8. 8AS

    Any Ideas/Suggestions are welcome :)

    2024 · mitenmit.github.io

  9. 9AD

    I used to enjoy Translation Party, and over the weekend I realized that we can build the same feedback loop with DALLE-3 and GPT4-Vision. Start with a text prompt, let DALLE-3 generate an image, then GPT-4 Vision turns that image back into a text prompt, DALLE-3 creates another image, and so on. You need to bring your own OpenAI API key (costs about $0.10/run) Some prompts are very stable, others go wild. If you bias GPT4's prompting by telling it to "make it weird" you can get crazy results. Here's a few of my favorites: - Gnomes: https://dalle.party/?party=k4eeMQ6I -…

    2023 · dalle.party

  10. 10

    Build Powerful Voice Agents

    2025

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    Grok 4.1367

    A new standard in conversational AI

    Nov 2025

  12. 12CP

    OP here. This comment contains SPOILERS so try the dystopia simulator first before reading further! I built "WeChatGPT+" in December on top of GPT-3. It was pretty surreal when OpenAI released an actual product named "ChatGPT Plus" a few months after that. Then the Microsoft partnership was announced, Bing AI was released, and marketing materials were leaked indicating that Bing AI would start including advertisements within the chat responses. Reality imitates fiction, I guess. Today - literally a few hours ago - OpenAI announced public ChatGPT API with 10% the cost of GPT-3. I immediately…

    2023 · future.attejuvonen.fi

  13. 13

    Natural Conversational AI With Any Role and Voice

    Feb 2026

  14. 14

    Hey HN! I'm excited to show off this really fun project I put together. I originally built this project 2-3 years ago, AI was already booming at the time, however voice AI agents were still very early. I loved my proof of concept at the time, but wasn't quite happy with it. I recently had the desire to check out the tech again, and know many of you will be interested. Interviews are speech to speech with OpenAI's gpt-realtime-2.1 over WebRTC. This model is... expensive, and because of that, I have to add some amount of restrictions, conversations are tied to a authenticated Clerk user id. I…

    27d ago · whodunnitai.com

  15. 15IM

    Hi, I'm a high school teacher from Australia and I've built what I'd like to think is a pretty nifty ChatGPT powered presentation tool for teachers. I'd love it if you could have a look at it and give me some of your feedback. I don't think there's much overlap with the HN crowd and school teachers, but I've been coming here for many years and thought I'd post here and see what you all think. Check it out if you have a minute and I'd be super happy to hear your feedback too. https://www.slidehero.ai/ You can jump in and have a play with the tool all you like ;) Cheers, Eli

    2025

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    AI-Powered unique Character Personality Generator

    2023

  17. 17

    Powerful Conversational AI Agent Builder Platform

    Nov 2025

  18. 18OS

    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

  19. 19

    Generate the perfect prompt for GPT4 & open source models

    2024

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    Create and save your prompts, recipes and chats in Notion

    2023

  21. 21

    Personalised AI chat companion - powered by GPT-4 & Bard AI

    2023

  22. 22

    AI powered typing made easy

    2024

  23. 23

    Supercharge your regular GPT prompts

    2023

  24. 24

    ChatGPT-like customer interactions in a website widget

    2024

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