What’s your prediction for rate/timeline of hyperinflation?
No clue on timeline. It could happen in a year from now, because the Fed is not trying to prevent inflation. But smart economists might find a way to hold it off and "kick the can down the road" for a long time as exgingi said.
Here's the powder keg though. If the stock market tanks, the Fed has no tricks left in the bag to stave off a recession. They're already buying more bonds than ever, buying trillions of etf's, and would not be able to lower interest rates or create an artificial stock price floor. So a bear market could cause a spike in interest rates and a decline in GDP. Rising interest rates with our current level of national debt is a death spiral, and what happens in that scenario is going to depend on what type of interventions are attempted (but a lot of vad outcomes are probable).
As for the rate, DB suggests we use the 1970's to set an expectation, which is roughly 7% annually on average