Glossary
Jito bundle
A Jito bundle is a short list of Solana transactions, sent with a tip, that validators running the Jito client execute together, in the order given, or not at all. Launch tools use Jito bundles to put a token’s creation and the creator’s buys into the same block, with nothing in between.
The tip competes with other bundles for a place in the block. A bundle whose transactions would fail is dropped whole, so a launch never lands half done.
Jito introduced the format, and relays now carry it. Ballistic sends its Solana bundles through a relay: the default is Helius Sender, which takes up to four transactions and a tip of at least 0.001 SOL, and Ballistic’s Block-0 plans pay exactly that minimum. A Reserve launch bundle bids at least 0.005 SOL and follows live tips. Solana bundler.
Limits and cost. A bundle holds at most four or five transactions depending on the relay, and the tip is part of the cost of the launch. Ballistic’s funding figure counts one tip for every bundle in a Block-0 plan, so the wallets are funded for it in advance.
A bundle that is not picked up lands nothing. Block-0 plans fix the tip when the plan is saved. A Reserve launch bundle bids higher, follows live tips up to 0.05 SOL and is resent with a higher tip, up to five times, and the funding stage budgets for the resends.
Questions
Who pays the tip on a Jito bundle?
The launch does. The tip is a transaction inside the bundle, paid from the funded launch wallets, and the funding figure includes it.
What happens if the tip is too low?
The bundle may not be picked up, and then none of it lands. That is why a Reserve launch bundle raises its tip and resends.
Is a Jito bundle the same as Block-0?
No. The bundle is the Solana method; Block-0 is Ballistic’s launch mode built on it.