Relay is the instant payment network making transacting across chains as fast, cheap, and simple as online payments. We’re pioneering “multichain payments” — a unified system for moving value anywhere onchain with no friction, no chain switching, and no technical guesswork. Since launching in 2024, Relay has served 5M+ users, processed 50M+ transactions, and moved $6B+ in volume across 75+ networks. On Ethereum alone, we route an average of 3 transactions every block, representing nearly 0.7% of all network activity.

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The Complete Stack

Built as a full-stack solution for every layer of the multichain payments experience:

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🏪 Relay App

For everyone who wants to swap tokens across chains The fastest way to go from any token to any token across chains. Swap ETH on Ethereum for SOL on Solana in one transaction — built on the same infrastructure that powers enterprise customers. Try the App

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⚡ Relay API

For developers building multichain experiences One integration, 75+ chains, zero complexity. Abstract the hardest parts of multichain development:
  • Bridge instantly between chains with predictable fees
  • Swap seamlessly using meta-aggregation across all major DEXs
  • Deliver payments-grade UX with gas sponsorship, guaranteed rates, and SLAs
Whether you’re building wallets, marketplaces, or consumer apps, Relay makes crosschain payments fast, reliable, and invisible. View Documentation

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🌐 Relay Protocol

The network powering it all The open system connecting users to relayers who execute onchain actions with maximum capital efficiency. Designed for low gas costs, rapid chain expansion, and enterprise-grade reliability. Learn More

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Payments-Grade Reliability

Unlike traditional bridges, Relay delivers the reliability users expect from modern payments:
  • 99.9% uptime across 75+ networks
  • Fast execution instead of multi-minute wait times
  • Automatic redundancy systems ensuring transactions complete
  • Clear completion signals for apps and users

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Use Cases

Relay’s flexible architecture supports diverse applications:

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Trusted by Leading Teams

Chain Expansion: Alchemy, Conduit, and Caldera rely on Relay to provide payment rails to every rollup out of the box. Chain Abstraction: OpenSea powers crosschain mints through Relay so collectors never worry about which chain they’re on. Phantom collapses complex swaps into seamless flows. Multichain Infrastructure: Apps like OneBalance route execution through Relay, letting users access opportunities across chains as easily as checking their balance.

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Ready to Experience Multichain Payments?

For Users: Try the Relay App to swap any token across any chain instantly. For Teams & Developers: Check out our Guides to add multichain payments to your app.
Contact us about enterprise features including dedicated support, custom SLAs, and priority routing.