Jupiter has launched Ultra V3, a new DeFi trading engine for Solana built around three core components: Iris routing, ShadowLane transaction landing, and Predictive Execution. The Solana liquidity aggregator said the release is designed to improve pricing, execution quality, and trader protection, and it is now live across all Jupiter platforms.
Iris routing and ShadowLane form the execution stack
According to Jupiter, Iris is a new router exclusive to Ultra that uses meta aggregation and optimization methods to improve pathfinding. It supports route splits as fine as 0.01%. The company said Iris works alongside JupiterZ, its proprietary RFQ system, as well as meta aggregation across DFlow, Hashflow, and OKX to deliver stronger pricing. Jupiter said JupiterZ is currently facilitating roughly $100 million in daily zero-slippage volume.
ShadowLane is Jupiter’s in-house transaction landing engine. The company said it cuts latency from 1–3 blocks to 0–1 block while keeping execution private and avoiding external relays or order-flow sales. Jupiter also claimed ShadowLane lands 3x more trades than alternative premium methods.
Predicted execution replaces quote-only routing
Ultra V3 also introduces Predictive Execution. Instead of relying on theoretical quotes alone, the system runs just-in-time simulations on every route, estimates actual slippage, and prioritizes routes based on live on-chain conditions. Jupiter cofounder Siong said many platforms present optimistic quotes that fail to match real execution, while Ultra V3 is built to show users what they are more likely to receive when the trade actually lands.
The release also includes Ultra Signaling, which Jupiter said allows Prop AMMs to quote as much as 3 basis points tighter, or 50% better pricing, for verified non-toxic Jupiter Ultra flow than for toxic order flow such as arbitrage bots.
Slippage control, sandwich defense, and fee cuts
Jupiter said Ultra V3 includes advanced sandwich protection and a more sophisticated slippage estimation system. Its RTSE system was developed over two years and automatically adjusts slippage settings by analyzing volume, historical volatility, and transaction patterns. In version 3, Jupiter said it reduced slippage settings while keeping a high success rate, added automatic prioritization for slippage-protected routes, and increased sensitivity for historically volatile tokens.
On MEV exposure, Jupiter said some providers increase sandwich risk by selling order flow to third-party MEV searchers. Ultra V3 is designed to avoid handing trades to external providers for on-chain execution, which the company said reduces toxic MEV exposure as much as technically possible, though not to absolute zero because validators still broadcast transactions to chain leaders.
On costs, Jupiter said execution fees on Ultra V3 are 8 to 10 times lower than comparable platforms. The announcement also referenced a comparison against other top five trading terminals and cited results of -1 bps to -14 bps on other platforms, though it did not provide the full comparison table in the text.
Broader token coverage and Ultra API for developers
Ultra V3 expands support to Token-2022 assets and memecoin-to-memecoin pairs, with minimum trade sizes as low as $10. Jupiter said users can trade without holding SOL for gas. The engine is also described as capable of routing every token on Solana, including illiquid or inactive markets, through dynamic on-demand reindexing.
The engine now powers Jupiter’s web platform, mobile app, and desktop wallet, and it is integrated with Terminal, Screener, Portfolio + PnL, Alphascan, and Analytics. For developers, Jupiter has opened access through Ultra API, offering endpoints for balances, token search, and transfers while handling RPC complexity and infrastructure maintenance on its side. The company said future development will center on Ultra V3 and Iris, and that many meta routers still using the sunsetted Legacy API, known as Metis, will move to Ultra API.