Hi HN!
I have created a particularly realistic AI simulacra: https://kara.rhogpt.ai/. I haven't seen any LLM companies really explore this format.
Unlike other AI chatbots kara can receive multiple messages at once and send multiple messages at once. The personality is also pretty different from ChatGPT or Claude. It really is a lot like texting a friend.
Also I don't really like roleplay so kara does acknowledge it is an AI unlike friend.com and doesn't pretend it is anyone else unlike character.ai.
There might be some stability issues with the model (repeating messages, etc). It's made to appeal to younger people (gen-z) which might explain some design choices.
Let me know what you think! Thinking of making an app.
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