Best Crypto Bridges: Cross-Chain Solution in 2026

Key Features of Across Protocol

Across is built around intents. You state what you want to receive on the destination chain, a relayer fills it from its own capital, and Across settles the relayer's repayment later through its HubPool on Ethereum. V4 went live on 2 July 2025 with settlement backed by zero-knowledge proofs, and the routable network now covers more than 20 chains, including Tron and BNB Chain, with Solana reached through Circle's CCTP. Across says on its homepage that it has moved over $40 billion for 5 million users. In April 2026 its token holders voted, with 91.5% in favour, to convert ACX into equity in AcrossCo or a USDC buyback.

Across Protocol Security

A relayer's claim for repayment can be challenged before it settles, and disputes go to UMA's optimistic oracle. The audit list in the Across docs names OpenZeppelin only. L2BEAT notes that a 3-of-5 multisig can upgrade the Ethereum and OP SpokePools with no delay, and a separate 3-of-5 multisig can do the same for the V5 Gateway, which is the main trust assumption to accept. On 17 July 2026 an attacker exploited Risk Labs' Solana event reader to fake deposits; Risk Labs' relayer lost under $4 million net, the contracts were not compromised and users were unaffected.

Across Protocol Fees

You pay a relayer fee (destination gas plus the relayer's capital cost), an LP fee that falls to zero when the relayer is repaid on the origin chain, and origin-chain gas. Our quote on 9 October 2026 at 22:02 UTC showed a fee of 0.107101 USDC to send 1,000 USDC from Ethereum to Arbitrum, so we would have received 999.89 USDC. Read our full Across Protocol review.

Key Features of Stargate Finance

Stargate's docs list unified pools for USDC, USDT and ETH on 18 chains and Hydra tokens on 28 more, 46 chains with contracts and no Solana, though it deprecated several remote pools on 24 September 2026. Stargate ended its Bus mode, and since 1 October 2026 every transfer goes by Taxi. In August 2025 nearly 95% of voters in Stargate's DAO approved a LayerZero takeover worth about $120 million in ZRO. Wormhole had made a late counter-bid. STG converts to ZRO at 0.08634 until 15 December 2026.

Stargate Finance Security

LayerZero's decentralised verifier networks check each message, and Stargate's docs name the Stargate DVN and Nethermind among them. A 5-of-7 multisig controls admin actions. Zellic and OtterSec audited Stargate V2. Since a June 2026 credit-messaging upgrade, the owner can adjust pool credits without LayerZero verification. The April 2026 Kelp rsETH drain of about $292 million came from Kelp's own one-verifier setup on LayerZero, not from Stargate.

Stargate Finance Fees

Fees are dynamic per route. A pool transfer can pay a treasury fee or earn a rebalancing reward, and you also pay LayerZero's message fee and gas. Check the fee in the app before you confirm. Read our full Stargate Finance review.

Key Features of Arbitrum Bridge

This is the rollup's own canonical bridge, now at portal.arbitrum.io/bridge. It connects Ethereum with Arbitrum One (an optimistic rollup), Arbitrum Nova (which relies on a data availability committee) and the L3 chains built on Arbitrum One. About $3.55 billion sits in its escrow. Our explainer on how rollups work covers the background.

Arbitrum Bridge Security

L2BEAT rates Arbitrum One Stage 1. Since BoLD went live on 15 February 2025, anyone can challenge an invalid state assertion by posting a bond in ETH. A Security Council of 12 can act with no delay when 9 of them sign, and users can force a transaction through Ethereum if the sequencer ignores them. In 2022 a whitehat found an Inbox bug and received a 400 ETH bounty; no funds were lost.

Arbitrum Bridge Fees

There is no bridge fee. You pay Ethereum gas plus a small Arbitrum execution cost, and with Ethereum gas at 0.111 gwei on 9 October 2026 that came to cents. Deposits arrive in 15 to 30 minutes, and withdrawals back to Ethereum take at least seven days while the challenge period runs. Read our full Arbitrum Bridge review.

Key Features of Portal Bridge

Portal combines Wormhole's Token Bridge, which locks a token on one chain and mints a wrapped version on another, with native USDC through CCTP, Wormhole's NTT tokens and Portal Swap powered by Mayan. Portal claims more than 30 chains, and 13 hold funds on DefiLlama. It is our pick for Solana and other non-EVM chains. Wormhole has also retired chains since 2025, including Fantom (October 2025), Scroll (April 2026), Berachain (August 2026) and Injective (September 2026).

Portal Bridge Security

Transfers need signatures from 13 of Wormhole's 19 Guardians, and a Governor and Global Accountant limit and check flows. Wormhole lists 29 third-party audits. On 2 February 2022 a Solana-side signature bypass minted 120,000 wETH, worth about $326 million; Jump Crypto replaced the 120,000 ETH the next day, and DefiLlama lists no Wormhole exploit since.

Portal Bridge Fees

The fee is shown in the quote. You pay gas on both chains, and relayed routes add a relayer fee. Wormhole's current docs give no fixed amounts, so compare the quote before you confirm. Read our full Portal Bridge review.

Key Features of Orbiter Finance

Orbiter lists 74 mainnet chains, 61 EVM and 13 non-EVM, including Solana, Starknet, TON, Sui, Tron and Fuel, and offers swaps as well as bridging. Its OBT token launched on 20 January 2025 with a supply of 10 billion.

Orbiter Finance Security

You send funds to a maker's wallet, and the maker pays you on the destination chain. Never edit the amount. Its last four digits encode the destination, so changing them breaks the transfer. Orbiter documents an arbitration design for failed transfers, and its docs list three SlowMist audit reports. We found no protocol exploit, though hackers took over its Discord on 1 June 2023 to post a fake airdrop.

Orbiter Finance Fees

Each maker charges a percentage trading fee plus a fixed withholding fee for destination gas. Orbiter's docs give two undated examples from Ethereum to zkSync: 1 ETH costs 0.03% plus 0.0014 ETH, and 100 USDC costs 0.3% plus 1.5 USDC. Read our full Orbiter Finance review.

Key Features of Synapse Protocol

The Synapse Router picks a route for you: canonical mint-and-burn, liquidity pools (nUSD and nETH) or CCTP for native USDC. Synapse also runs the Synapse Intent Network, where relayers front the funds. It covers more than 16 chains and 8 bridge tokens. Use bridge.synapseprotocol.com, because the main synapseprotocol.com domain now redirects to Hypercall, an options venue.

Synapse Protocol Security

Intent routes are optimistic, with relayers proving fills during a dispute window watched by Guards. Validators sign older pool routes, and their reversal of a mint in 2021 shows the set is permissioned. In November 2021 a bug in forked Saddle code let an attacker drain about $8 million from the Avalanche nUSD metapool. Validators reversed the cross-chain mint, and the team told liquidity providers they would be made whole.

Synapse Protocol Fees

Synapse doesn't publish a fee schedule. Its fee changes by route, and you see it only in the quote. Read our full Synapse Protocol review.

On the route we priced, Ethereum to Arbitrum, the official Arbitrum bridge has the lowest bridge fee and Across gives the best fee for the speed. With Ethereum gas near 0.1 gwei, the bridge fee and the wait matter more than gas.

Stargate, Portal and Synapse show their fees only in their own quote screens, and Orbiter's docs give only undated examples, so we leave all four out rather than estimate. Check the quote screen before you sign, and use our bridge comparison tool for the other columns.

A crypto bridge moves value between blockchains that can't read each other's ledgers. It locks, burns or pools an asset on one chain and releases or mints the matching asset on the other. Arbitrum's bridge, for example, locks your ETH in a contract on Ethereum and credits the same amount on Arbitrum.

The token you receive can be native or wrapped. A wrapped token is an IOU backed by whatever the bridge locked, so it is only as safe as the bridge. Circle's CCTP avoids that for USDC. It burns USDC on one chain, and Circle mints native USDC on the other. If you are new to this, start with how to bridge crypto, stablecoins like USDC, DeFi and Ethereum.

Every bridge asks you to trust something. The table shows what that is for each design, with examples we have reviewed. Most of them run on smart contracts. The exceptions are the custodial model, where an exchange holds the funds, and the maker model, where you pay a maker's ordinary wallet.

Bridging is riskier than holding on one chain. Bridges keep large pools of funds behind a small set of keys or code paths, which makes them a favourite target. The incidents below show what can go wrong, and what happened to the money afterwards.

Before you move a meaningful amount, run through this list:

• Bookmark the bridge's official URL. Impersonation sites exist, and Hop's old domain now serves an unrelated site.
• For large amounts, prefer a canonical bridge or a native USDC route over wrapped tokens.
• Read the bridge's incident record and check whether users were repaid.
• Send a small test transfer first.
• Revoke token approvals you no longer need.
• Don't sit on wrapped tokens of a chain that is closing. Keep funds in a self-custody wallet.

Choose by route first. The right crypto bridge depends on where your funds are, where they need to go and how fast you need them.

Then check five things: the trust model, the incident record, whether you receive a native or wrapped token, the total quoted cost and how long it takes to come back out.

• Connect a wallet: MetaMask or Rabby for EVM chains, Phantom for Solana.
• Pick the source and destination chains and the token.
• Check what you will receive: the native asset or a wrapped one.
• Check the quote: bridge fee, gas and expected time.
• Approve the token, then confirm the transfer.
• Add the destination network to your wallet if you don't see the funds (our MetaMask guide shows how).

Our step-by-step guide to bridging crypto covers each route in detail.

• Out: Hop Protocol (effectively abandoned; its domain now serves an unrelated gambling page), Orbit Bridge (hacked, funds never recovered) and Binance Bridge (no longer offered).
• Up: Arbitrum Bridge moved from sixth to third. It has the highest security score of the six, and it charges no bridge fee (our 2025 page wrongly listed an average of $0.25).
• Down: Synapse moved from third to sixth as its value locked shrank and its main domain started redirecting to an options venue.
• Relabelled: Portal is now our pick for Solana and non-EVM chains rather than for low fees.
• New facts: Across V4 and V5 and its Solana route via CCTP; Stargate under LayerZero; Wormhole's chain retirements.