Polymarket predicts a market trading volume of $72.6 million for Bitcoin in 2026, with a reference price of approximately $84950. The probability of Bitcoin reaching $90000, $95000, and $100000 before 2027 is 73%, 54%, and 39%, respectively. Kalshi predicts a market trading volume of approximately $39.5 million for the year-end closing price of Bitcoin, with a forecasted value of $86240. Claude Opus 5.5 and ChatGPT-6 Astra's predictions for the Bitcoin price on December 31, 2026 are $91500 and $94000, respectively. (Source: Bitcoin.com News)