LibreChat

Given how much data (personal and otherwise) that you're likely going to feeding into it, I would HIGHLY recommend using an open-source chat interface like Jan. It's cross platform, works with most LLMs, and has extension support. https://github.com/janhq/jan Another alternative is LibreChat, it's more fully featured but its heavier weight and spins up quite a few docker instances. https://github.com/danny-avila/LibreChat If you're going through the trouble of running models locally, it doesn't make sense to couple that with a proprietary closed source interface (like LM Studio).

Just a reminder that LibreChat exists. It's FOSS, and lets you bring your own APIs key for all the LLM providers. The UI is excellent. You can run it locally, or as I do on a $5/month Linode server. I don't want to pay ~20/month for each LLM provider, so I put $5 to $10 on my Anthropic and OpenAI API accounts every couple months, and that lasts me plenty long. You get to save all your chats, change models mid-chat, view code artifacts, create presets, and much more. If you don't know how to set up something like this, ask ChatGPT or Claude. They will walk you through it, and you will learn a useful skill. It's shockingly easy. https://librechat.ai https://github.com/danny-avila/LibreChat

As far as open source goes, I'd probably recommend LibreChat. It has connections for ollama, openai, anthropic, etc. It let's you setup auth so you can theoretically use it from anywhere (phone, etc.). Fair warning, it's relatively heavyweight in so far as it has to spin up a number of docker instances but works very well. https://github.com/danny-avila/LibreChat