LI.FI has integrated Polymer, giving integrators more flexibility for cross-chain stablecoin transfers — including zero-slippage USDC moves across multiple networks.

Polymer comes with two routes. The Standard route is built on Circle's CCTP and delivers 1:1 USDC transfers with zero slippage, using Polymer's Execute API as the relayer layer on top of CCTP for native USDC movement with full price certainty (typically around 18 minutes). The Fast route is optimized for speed and cost, settling in roughly 6–10 seconds with minimal slippage (~0.02%).

What this unlocks

Zero-slippage stablecoin bridging — applications moving USDC across supported chains can now do so with 1:1 transfers and full price certainty via the Standard route.

Speed when it matters — for latency-sensitive flows, the Fast route settles in roughly 6–10 seconds with minimal cost tradeoff (~0.02% slippage).

One integration, less complexity — LI.FI abstracts the underlying relayer infrastructure, so developers get access to advanced CCTP-powered transfers without having to deal with what's under the hood. Large institutional transfers or high-volume consumer flows? Apps can select the right mode for what the transfer demands.