Best option for low spending within J.AI

Been using several methods of ways to get the chats going. Claude, OpenAI and a few more.

From everything I have tried, I prefer claude sonnet 3.5 or 3 as its the most stable and generally best for its cost. Problem is that even sonnet can be costly, and haiku is choppy and just not right. So I been using infermatic lately. Costs 15$ per month. But it has its disadvantages as well. It takes so long for a message to load up, 40 sec to a min for one message to pop up in the chat. The quality itself is decent except for the constant errors it provide.

What's the generally best option to use with a mix of quality and quantity without spending hundreds of dollars per month?