Arbitrage Bots
meloner3 / poly-kalshi-sports-bot
What it does
Cross-platform sports arbitrage between Kalshi and Polymarket. Written in Rust. The highest-starred arbitrage bot in the ecosystem.
What we learned from it
Rust shows up disproportionately in arbitrage code. The latency margins on cross-platform arb are tight enough that the language choice matters — Python's GIL becomes a real constraint when you're racing other bots for a 3¢ spread.
Find the author
- Repository: github.com/meloner3/poly-kalshi-sports-bot
- GitHub profile: @meloner3
Don't want to maintain your own bot?
Bot for Kalshi is the no-code platform for automated prediction-market trading — visual builder, signals, encrypted credentials, kill switch. The infrastructure these open-source projects build, ready to use.