The Oura Ring 4 is my pick for the best smart ring you can buy, and it's over $200 off during Amazon Prime Day (I even convinced my mom to buy one).
Token prices set the floor on every AI product's margins. When a provider moves pricing, it ripples across competitors, routing choices and the cost of every downstream feature.
Companies and models mentioned in this story — open their pages and live prices
Summaries are aggregated for information only — follow the source link for the full story. Demo entries are illustrative.