Merlin

I was searching for Chat GPT and Claude alternatives that allow me to use my own API keys (BYOK) and pay only for what I truly use. However, I discovered that this app only permits the use of an API key for the Chrome extension, which is incompatible with the web version and the iOS app I primarily use. Additionally, it restricts me to using the Claude API key or any other except OpenAI. Considering its limited functionality to web usage through the Chrome extension, I recommend exploring another product called Viinyx. Viinyx functions as a Chrome extension and enables the use of my API keys with various major LLMs. It also offers significantly lower costs.

I purchased two Tier 2 subscriptions for my wife and me, but I am more inclined to request a refund unless they integrate BYOK functionality for iOS and the web version.