$20/mo is too much IMHO. Is this providing as much value as a ChatGPT Plus subscription? No. How about $20 one time and let me bring my own API keys? I get that MRR is so so sweet. But it's not necessary for so many things.

Sorry for the late reply! We did this in our first MVP actually, and the result was that giving more choice over model selection resulted in worse retention / usage over time

Each models have their own behaviors / use cases (we're using Gemini now), and by opening it up to everything we needed to allow users full control over the prompts (even with defaults), which increased the learning curve significantly (and the usability of other features like Voices)

Ultimately decided to go with generous (i.e. Unlimited) paid plan

Agree. A lifetime license is the only model that makes sense for a wrapper. I wouldn't even pay $5/mo.

Totally this. I already pay for ChatGPT Plus and like it. Forcing their "own" AI for another $20/month is a nonstarter.