Across vs. THORChain
Rift Research
Last updated
TLDR: Across is an intent-based interoperability protocol. THORChain is a native cross-chain AMM. Consider Across when you are moving canonical USDC or ETH between major chains and care about speed. Consider THORChain when you want a direct native swap where pool depth is strong. Confirm the live winner on rates.gg.
What each protocol is
Across. Across is an intents protocol for bridging and cross-chain swaps. Relayers front destination liquidity. Across advertises approximately two-second fills on supported mainnet routes; actual timing depends on the route. Its intent settlement and refund mechanisms are separate from that initial fill. Official docs: Across Docs. App: across.to.
THORChain. THORChain is a Cosmos-SDK Layer 1 that runs continuous liquidity pools against RUNE. Users swap native assets (Bitcoin, Ether and others) by sending to inbound vaults. Assets are not wrapped or pegged. Official docs: THORChain Dev Docs. App: thorchain.org.
Short version
| Dimension | Across | THORChain |
|---|---|---|
| Role | Intent-based interoperability protocol | Native cross-chain AMM |
| Fee | Market-quoted relayer spread and LP fee; no separate flat protocol toll | Slip-based liquidity fee plus outbound network fee |
| Coverage | Supported mainnet networks, with availability determined by the exact token pair and route | Bitcoin, Ethereum, Cosmos-ecosystem assets and other connected L1s |
| Settlement | Canonical assets delivered by bonded relayers | Native via RUNE pools and TSS inbound vaults |
| Trust model | Relayer-funded fills and the settlement and dispute mechanisms of the deployed Across contracts | Bonded validator set; economic security designed so bonded value exceeds value at risk |
| Good fit for | Canonical USDC and ETH transfers between supported chains | Direct native swaps where pool depth is strong |
| Docs | Across Docs | THORChain Dev Docs |
Where each fits
Across may fit when:
- You are moving USDC or ETH between major supported chains
- Fast destination fills matter; confirm the estimate for your route
- You want a dedicated intent rail rather than a meta-aggregator
THORChain may fit when:
- You want a deep native AMM rather than an intent solver
- Streaming swaps or L1 pairs THORChain supports well
- Live pool depth beats other venues on your size
Key differences
Across and THORChain should be compared on the job you need to complete: the input asset, destination asset and chain, trade size, execution method and custody assumptions. They may overlap on some routes and complement each other on others. A broader chain list or faster advertised fill does not establish a better net rate. Compare executable quotes in the same window, including gas and every underlying step.
When to use which
- Use Across when you are moving canonical USDC or ETH between major chains and care about speed.
- Use THORChain when you want a direct native swap where pool depth is strong.
- If both can quote the same route, take the better net output after fees, time and settlement type. Check that print on rates.gg.
FAQ
Which is cheaper, Across or THORChain?
Neither has a universal price advantage. Across: Market-quoted relayer spread and LP fee; no separate flat protocol toll. THORChain: Slip-based liquidity fee plus outbound network fee. Compare executable quotes for the same size, destination and time window, including gas, underlying venue costs and any extra transfer. Expected output and minimum received are different figures; compare like with like.
Is Across a substitute for THORChain?
Only on overlapping pairs and chains. When both can quote the same route, take the better net output after fees and time. When only one supports the asset or chain, that one is the only option.
Where are the official Across and THORChain docs?
Across: Across Docs. THORChain: THORChain Dev Docs. Live rate comparison: rates.gg.
Official sources
- Across docs: Across Docs
- Across app: across.to
- Across — Introduction: docs.across.to/introduction
- Across — Features and fill times: docs.across.to/introduction/features
- Across — API reference: docs.across.to/api-reference
- THORChain docs: THORChain Dev Docs
- THORChain app: thorchain.org
- THORChain — Protocol overview: docs.thorchain.org/
- THORChain — Connecting / APIs: dev.thorchain.org/concepts/connecting-to-thorchain.html
Get the Best of Both With Rift
Rift is a strong alternative to choosing between Across and THORChain. It brings routes from both together with additional venues on supported pairs, comparing available quotes to find the best net execution for your order. You get the strengths of both through one API.
Rift adds no router fee and uses secure hardware enclaves to enforce noncustodial execution. Underlying venue fees, spreads and network costs still apply, and availability depends on the asset, chain and order size. The live quote shows the route and expected output.