Been using https://venice.ai/home also paid in bitcoin straight from the primal wallet and they have image generation as well.
Friendly reminder to check out https://unleashed.chat by nostr:npub1az9xj85cmxv8e9j9y80lvqp97crsqdu2fpu3srwthd99qfu9qsgstam8y8
It's fully private, you pay for your credits in #bitcoin over Lightning, and they they are using "uncensored" models (i.e. they've removed a lot, but not all, of the guardrails put in place to keep you "safe" from potentially dangerous information).
If you are using ChatGPT for any sort of business function, you need to understand that "Open"AI owns your data and is using it to train their models.
AND Unleashed.chat can query #Nostr events, so that's just freaking cool.
Discussion
I'm not really happy with Venice. I bought a yearly sub, but still using ChatGPT more...
Did you try Unleashed? Curious to see how it compares.