Arbitrage Opportunities
Price gaps between Numepredictions, Polymarket, and Kalshi create guaranteed profit. Buy the cheap side on each platform — one always pays $1.00 on resolution.
How it works: When Numepredictions and an external platform (Polymarket or Kalshi) disagree on a market's probability, buy the cheap side on each. Combined cost < $1.00 — one always pays $1.00 on resolution. The difference is locked-in profit. Kalshi is CFTC-regulated and accepts US users via bank transfer.
NBA Playoffs: Will the San Antonio Spurs eliminate the Minnesota Timberwolves?
NBA Playoffs: Will the San Antonio Spurs eliminate the Minnesota Timberwolves?
Will Bitcoin hit $200,000 before end of 2026?
Will Bitcoin hit $200,000 before end of 2026?
Will Ethereum reach $10,000 in 2026?
Will the Cavaliers reach the 2026 Eastern Conference Finals?
Will the Cavaliers reach the 2026 Eastern Conference Finals?
Will West Ham United be relegated from the Premier League?
NBA Playoffs: Will the Thunder beat the Lakers in the Western Conference Round 2?
Will PSG win the 2025-26 UEFA Champions League?
Will Tottenham Hotspur avoid relegation from the Premier League?
Will the US and Iran reach a permanent peace deal by June 30, 2026?
Alexander Zverev wins 2026 French Open (Roland Garros)? Men's Final Jun 7
Jannik Sinner wins 2026 French Open (Roland Garros)? Men's Final Jun 7 (Alcaraz withdrawn)
Will Arsenal win the 2025-26 Premier League title?
The Colorado Avalanche win the 2026 NHL Stanley Cup?
Arsenal win the 2025–26 English Premier League?
Jesus Christ return before GTA VI?
Opensea FDV above $500M one day after launch?
MicroStrategy sells any Bitcoin by May 31, 2026?
MicroStrategy sells any Bitcoin by December 31, 2026?
Kraken IPO by December 31, 2026?
Discord not IPO by June 30, 2026?
UCL Final: Will PSG defend their Champions League title against Arsenal? (May 30, Budapest)
The Oklahoma City Thunder win the 2026 NBA Finals?
No Fed rate cuts happen during 2026?
Gavin Newsom win the 2028 Democratic presidential nomination?
J.D. Vance win the 2028 Republican presidential nomination?
JD Vance win the 2028 US Presidential Election?
PSG win the 2025–26 Champions League?
Marco Rubio win the 2028 Republican presidential nomination?
Arsenal win the 2025–26 Champions League?
MicroStrategy sells any Bitcoin by June 30, 2026?
OpenAI not IPO by December 31, 2026?
MetaMask launch a token by December 31, 2026?
No one announced as next James Bond?
Opensea FDV above $100M one day after launch?
Ostium launch a token by December 31, 2026?
Will the Oklahoma City Thunder win the 2026 NBA Championship?
Will Shai Gilgeous-Alexander win the 2026 NBA Finals MVP?
Will the 2026 NBA Finals go to Game 7?
Will Mercedes win the 2026 F1 Constructors' Championship?
Will Aryna Sabalenka win 2026 Wimbledon (Women's)?
The San Antonio Spurs win the 2026 NBA Finals?
US recession before 2026 ends?
NBA Conf. Semifinals: Will the Knicks beat the 76ers in the series?
Gavin Newsom win the 2028 US Presidential Election?
Manchester City win the 2025–26 English Premier League?
Opensea FDV above $1B one day after launch?
MetaMask launch a token by September 30, 2026?
Discord’s market cap be less than $15B at market close on IPO day?
Claude 5 be released by June 30, 2026?
Discord’s market cap be between $15B and $20B at market close on IPO day?
NBA Conf. Semifinals: Will the Knicks beat the 76ers in the series?
France win the 2026 FIFA World Cup?
Spain win the 2026 FIFA World Cup?
The New York Knicks win the 2026 NBA Finals?
1 Fed rate cut happen during 2026?
Will the Atlanta Braves win the 2026 MLB World Series?
Alexandria Ocasio-Cortez win the 2028 Democratic presidential nomination?
Marco Rubio win the 2028 US Presidential Election?
MetaMask launch a token by June 30?
GPT-6 be released by June 30, 2026?
OpenAI’s market cap be $1.5T or greater at market close on IPO day?
Brazil win the 2026 FIFA World Cup?
England win the 2026 FIFA World Cup?
2 Fed rate cuts happen during 2026?
Bitcoin hit $150k by December 31, 2026?
China invade Taiwan before 2026 ends?
Germany win the 2026 FIFA World Cup?
Kamala Harris win the 2028 Democratic presidential nomination?
Alexandria Ocasio-Cortez win the 2028 US Presidential Election?
Jon Ossoff win the 2028 Democratic presidential nomination?
Tucker Carlson win the 2028 Republican presidential nomination?
Pete Buttigieg win the 2028 Democratic presidential nomination?
Xi Jinping out before 2027?
Opensea FDV above $3B one day after launch?
Opensea FDV above $2B one day after launch?
Claude 5 be released by May 31, 2026?
Taylor Swift pregnant before marriage?
Microsoft acquire TikTok?
Will the Oklahoma City Thunder win the 2026 NBA Championship?
Portugal win the 2026 FIFA World Cup?
Argentina win the 2026 FIFA World Cup?
3 Fed rate cuts happen during 2026?
Will the Oklahoma City Thunder win the 2026 NBA Championship?
Will Aryna Sabalenka win the 2026 French Open (Women's)?
Will the LA Dodgers win the 2026 MLB World Series?
Will the New York Yankees win the 2026 MLB World Series?
Will the LA Dodgers win the 2026 MLB World Series?
Will the New York Yankees win the 2026 MLB World Series?
Will Kevin Warsh be confirmed as the next Fed Chair?
Will France win the 2026 FIFA World Cup?
Will Carlos Alcaraz win 2026 Wimbledon (Men's)?
Step-by-step guide
Spot the price gap
Numepredictions, Polymarket and Kalshi price the same market differently. That gap is your edge — one platform is wrong and you capture the difference.
Buy the cheap side on each
Click "Execute on Numepredictions" below, then open Polymarket or Kalshi and buy the opposite side. Each position is cheap — combined they total less than $1.
Collect when it resolves
Whether YES or NO wins, one of your positions pays $1.00. Since you spent less than $1 total, you profit — with zero directional risk.
Important: You need accounts on both platforms. Always confirm live prices before executing — spreads can close quickly. Kalshi is only available to users in most US states (blocked in AZ, IL, MA, MD, MI, MT, NV, OH). Prices shown are indicative.