Series I bonds promise a 0% real yield. TIPs [1] are currently offering between 0.5% and 1.6% of real yield [2]. Plus, no cap.
[1] https://www.treasurydirect.gov/indiv/products/prod_tipsvsibo...
[2] https://www.treasurydirect.gov/instit/annceresult/annceresul...
[1] https://tipswatch.com/2022/04/21/new-5-year-tips-auctions-wi...
[1] https://tipswatch.com/2021/09/07/i-bonds-vs-tips-whats-the-b...
Savings accounts have always been of dubious value for preserving or accruing value.
USD has been increasing against major foreign currencies in the last few months so there is some upside if you're planning on spending outside the US.
(For example, USD is 12% up against the euro in the last year and 20% vs the yen)
[1] https://treasurydirect.gov/indiv/planning/plan_education.htm
The shortest term TIPs are sold in is 5 years. They can be sold earlier, but the price will depend on market conditions.
Series I bonds have a 30 year term, but they're redeemable with a penalty after 12 months and without a penalty after 5 years.
Bills have no inflation protection, but they're sold in terms as short as 4 weeks. They currently yield 50 bps, in line with Goldman Sachs' savings account, but lower than others in the market. (Savings accounts can change their rates on a whim; bills do not.)