this is what I just got from the Thai Embassy: Financial evidence showing monthly income of no less than 65,000 THB or having the current balance of 800,000 THB, e.g. bank statements, proof of earnings
Both non-Thai national applicants must be 50 years or older.
Must meet the following financial requirements:
Have at least an 800,000 THB deposit for at least two months before the visa application.
A monthly income of at least 65,000 THB.
A combination of security deposit and annual income of a total of 800,000 THB.
Non-immigrant type “O-A” visas are required to have a health insurance policy with a minimum coverage of 100,000 USD, including treatment for COVID-19.