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Jito has rebuilt how transaction bundles reach its Block Assembly Marketplace (BAM) on Solana, and its own early figures suggest validators are earning noticeably more from the same network. The Jito team announced Direct Bundle Ingest (DBI), a system that lets searchers send bundles straight to BAM Nodes. It has run on mainnet with an early cohort for roughly a month.
What DBI changes
Since BAM went live in September 2025, bundles have first passed through the Jito Block Engine for authentication, simulation and filtering. That route added about 50 milliseconds and left BAM’s own filtering and simulation capabilities unused.
Under DBI, searchers submit bundles of up to five transactions over QUIC or JSON-RPC. The BAM Node checks every signature and simulates the bundle, and only bundles in which every transaction succeeds continue. They then enter a leader-aware auction, ranked by total fees (priority fees plus Jito tips) relative to requested compute units. Winners go to the current BAM leader as one atomic batch, which reverts entirely if any transaction fails. The system also offers pre-execution privacy, revert protection and static tips.
Traffic from the Block Engine has been rerouted too. Authenticated bundles and sendTransaction requests now pass through DBI, skipping the Block Engine’s own 50ms auction.
Early results
Jito compared two windows of about two and a half weeks each: September 3 to 20 and September 20 to October 7. BAM received 7.5% fewer bundles, from 23.76 billion to 21.97 billion, but landed 16.9% more, rising from 106.3 million to 124.3 million. The end-to-end land rate moved from 0.45% to 0.57%.
Quality improved at each stage. Simulation success went from 11.4% to 16.1% and auction success from 3.4% to 4.7%. The share of compute spent on failed simulations fell from 50% to 41%. Median fee per compute unit rose 53%, to 2.76 lamports, and average reward per landed bundle increased 72%, to 0.000231 SOL. Total landed bundle tips doubled, from 14,279 SOL to 28,765 SOL.
Why validators are the audience
Jito frames the results as the start of a flywheel. More direct flow brings higher-value bundles to BAM leaders, which raises validator rewards and gives more stake a reason to run the BAM client. A bigger BAM share of stake then makes the marketplace more useful to searchers and applications.
Limits of the data
The numbers come from Jito, not an independent source. They cover only a few weeks, and only a limited group of searchers is sending directly. Epoch 1052 was left out because it hadn’t finished at the time of writing. Even after the improvement, the land rate sits well below 1%, so most submitted bundles still don’t land.
Also Read: Jito’s JTX App Plans Equities Within Two Weeks, Perps Possibly This Winter
What comes next
Jito says it is working on smarter filtering of low-quality bundle traffic, more spam controls and faster landing for good bundles as DBI volume rises. It also plans stability and scalability upgrades so that searchers and applications now relying mainly on the Block Engine can move fully to DBI during BAM leader slots. Searchers and applications can request access through a form and begin sending once whitelisted.
Disclaimer: The information in this article is for general purposes only and does not constitute financial advice. The author’s views are personal and may not reflect the views of Chain Affairs. Before making any investment decisions, you should always conduct your own research. Chain Affairs is not responsible for any financial losses.
I’m a crypto enthusiast with a background in finance. I’m fascinated by the potential of crypto to disrupt traditional financial systems. I’m always on the lookout for new and innovative projects in the space. I believe that crypto has the potential to create a more equitable and inclusive financial system.
