ChatGPT 1 year go plan trial Subscription Expired – Need the Best Free AI Alternatives & Tricks!

My 1-year ChatGPT Go subscription just ran out! :sweat_smile:

What are the best free tricks, tools, or workarounds to keep using ChatGPT / top-tier AI for coding & research without paying for a subscription?

Looking for recommendations on free models, extensions, or open-source alternatives. Drop your best suggestions below! :backhand_index_pointing_down: