This is a fantastic piece of software that allows you to use your own API keys (or optionally, use their cloud service). It is efficient, works well and syncs with the mobile app.The only drawback is that it doesn’t let you upload arbitrary files for context like the regular ChatGPT or Claude apps do. I will like the developer to add support for it.

As a third-party client that utilizes ChatGPT API, OpenCat is undoubtedly a practical and recommendable application. As a user who is interested in conversational bots, I found this application on the App Store and realized it is both user-friendly and highly customizable.OpenCat enables you to easily integrate with ChatGPT API, powered by natural language processing technology, and launch your own chatbot. You can also customize its domains, entities, intents and other components, making it more suitable for your needs. This is very useful because it allows better control over your bot's behavior and makes it more human-like.Moreover, I appreciate OpenCat's interface design. Its interface is straightforward, easy to use, and helps you create and manage multiple chatbots with ease. I can effortlessly add my own dialogs to my bot, modify them when needed, and make it more engaging to interact with my users.In conclusion, I really like OpenCat and I think it is an extremely practical, user-friendly, and highly customizable application. Whether you're interested in conversational bots or you want a customized chatbot to meet your specific needs, I highly recommend using OpenCat.

I run my own AI models and I was looking for an app to use across my Apple devices that would give me a ChatGPT-like experience with my own AI. The interface for this app is *almost there*.But there are other things that look like maybe they were started awhile ago but never completed? Examples:* MCP Servers - stdio and sse are presented in the interface. But stdio isn’t supported on Apple devices (so why even present the option in the interface?) and sse is a deprecated protocol. Streaming MCP is the way to go now but it’s not supported in this app. So technically, yes, there’s MCP. But outside of a few edge cases you can’t really use it.* Search - There’s a search button in the chat interface but options are greyed out and written in a language I can’t read. There’s no way to configure this. So it’s another interface option that looks like maybe it was started but never finished.We really need some tools *like* this and I really encourage the developer to see this through. Polish it up. There’s potential for greatness here, but it’s still unrealized.

I have been using this application since its launch. It was my goto when using the sea of developer API keys I was testing in my own projects. Sadly, the app is missing several key features with several others which I consider half baked. There is no documentation, no ability to save or export (you have to copy each side of the chat one by one), the prompt library is hardly functional, offers a subscription that’s over ridden by the presence of an API key… all in all I find myself reaching for anything but OpenCat..