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Soneium Bridge

Bridge any token to and from Soneium — Sony's consumer L2 across 50+ networks — WETH and dozens more in one non-custodial transaction. Median delivery 24 seconds via Symbiosis routing layer.

Open Soneium bridge

Proven at scale

Five years of secure cross-chain infrastructure

2021

Live Since

2021

50+

Chains

50+

58 sec

Avg bridge time

58 sec

$10B

Total volume

$10B

CROSS-CHAIN GUIDE

How to bridge to Soneium

Example quote from 25 September 2026: sending 3,000 USDC (~$3,000) from Ethereum returns about 1.1194 ETH on Soneium via Symbiosis, estimated ~20 sec — no wrapped tokens beyond the standard route, fully non-custodial. Symbiosis works as a liquidity meta-aggregator, comparing routes across multiple DEXes and bridge providers and picking the best one by price, fee, and speed automatically. This is one of the most popular flows on this corridor; the same widget supports any source chain and token combination. Here's how the flow works:

Pick the source. Set Ethereum as source and Soneium as destination — the USDC sits in an Ethereum wallet, and the goal is access to Soneium consumer apps and entertainment.
Connect wallets. MetaMask on the Ethereum side, MetaMask on the Soneium side. Symbiosis reads the destination address automatically from the connected wallet — no manual paste required.
Enter the amount. 3,000 USDC (~$3,000) in this example. Keep enough ETH in the wallet to cover network gas.
Review the quote. Symbiosis displays the exact ETH amount on Soneium (about 1.1194 ETH in this example), the flat Symbiosis fee in USD, and ETA (~20 sec). The quote is locked in before signing — 2% slippage tolerance protects against sudden price moves.
Sign and confirm. Sign the Ethereum transaction in MetaMask. ETH arrives in MetaMask once the route completes — track the transfer on Symbiosis Explorer.

Soneium Bridge — live route in PRO mode: 3,000 USDC (Ethereum) to 1.129 ETH (Soneium) · Symbiosis

About bridging to Soneium

Why this route. Soneium is Sony Block Solutions Labs' Ethereum layer 2 on the OP Stack. People bridge in for the Startale App, public since April 2026 with mini apps and games such as Cool Cats, or to swap on Kyo Finance and lend on Sake Finance.
What you receive. ETH on Soneium, the coin that pays gas there, converted from your Ethereum USDC after you sign a single transaction.
Watch out for. Soneium mainnet is chain ID 1868; Minato (1946) is the testnet, so check your wallet is on mainnet when looking for the ETH. If an app asks for Startale USD (USDSC), swap part of the ETH on Kyo Finance.
Speed. Across all routes into Soneium, median delivery 16 seconds; 90th percentile 37 seconds, over the 90 days to 25 September 2026.

More chain bridges: Arbitrum Bridge, Base Bridge, Katana Bridge, Optimism Bridge.

ROUTE ESTIMATES

Estimated fees

Approximate fees and swap time based on historical averages, updated 3x/week. Actual values may vary.

Amount

Receive

Fee + Gas

Time

1,000 USDC

0.3768 ETH

$3.18

~20s

2,500 USDC

0.9427 ETH

$4.81

~20s

5,000 USDC

1.885 ETH

$9.77

~20s

10,000 USDC

3.77 ETH

$18.27

~20s

Ready to bridge? Live rates across
50+ networks. No signup, no KYC

Ready to bridge? Live rates across 50+ networks.
No signup, no KYC

Start a swap

Crypto coins background — Symbiosis blog

WHY SYMBIOSIS

Secure by design. Proven at scale

Audited in the open

No KYC, no custody, no intermediaries. Audited by Decurity, Zokyo, SlowMist, and Omniscia — 13 public audit reports across 11 protocol modules (Core, MetaRouter v3, Pool, TON Bridge v1+v2, Relayers Network, Staking, Frontend). All reports open-source on GitHub. 4+ years live on mainnet (since March 2022) with zero major security incidents. Active bug bounty program.

Audited in the open

Two-layer staking security

Cross-chain transactions routed via Octopools AMM (scans liquidity across DEXs and chains for minimal slippage), then signed by an MPC group via Threshold Signature Scheme (TSS) — no single party can move user funds. Two security layers: Symbiosis PoS Staking (SIS-collateralised relayer nodes) + Symbiotic restaking (additional slash-able collateral). 2/3 stake quorum for epoch changes.

Two-layer staking security

$8B+ across 54 chains

$8B+ total volume bridged across 5M+ transactions from 800K+ unique wallets. Supports 54 networks — more than any other cross-chain bridge (Across 35+, deBridge 30+, Allbridge 20). EVM + non-EVM in one route — Ethereum, Solana, BNB Chain, TON, Tron, Bitcoin, Arbitrum, Polygon, and 46 more. Per-transaction range: $10 to $140,000 — handles retail swaps and whale trades on the same route.

Still have questions?

What is Soneium?

Soneium is Sony's consumer-focused Ethereum Layer 2 network, built to support mainstream applications, NFTs, and on-chain experiences. Users typically bridge assets in to swap, trade, and interact with the Soneium ecosystem. With Symbiosis you can move funds onto Soneium from chains like Ethereum, Base, and Polygon without leaving the bridge widget.

How do I bridge to Soneium?

Connect your wallet to the Symbiosis widget, choose your source chain (such as Ethereum, Base, or Polygon), and select USDC as the token you send and ETH as the token you receive on Soneium. Enter the amount, confirm the live quote, and approve the transaction. Most transfers settle fast — median delivery is 16 seconds, with 90% completing within 37 seconds as of September 2026.

Is Soneium safe to use with this bridge?

Symbiosis is a non-custodial, audited routing layer, so you keep control of your funds throughout the transfer and there is no KYC requirement. You always confirm the exact output amount before signing.

How much does it cost to bridge USDC to Soneium?

On 28 September 2026 the Symbiosis routing engine quoted bridging USDC from Ethereum to ETH on Soneium as follows: 1,000 USDC delivered 0.3768 ETH with a $3.18 fee and 10,000 USDC delivered 3.77 ETH with an $18.27 fee (full cost in the Symbiosis app plus gas, source gas estimated), each in about 20 seconds per the Symbiosis quote; the exchange rate is already reflected in the amount you receive. The fee grows with the amount. The widget shows the exact fee and receive amount before you sign.

How do I swap to Soneium?

Pick your source chain and the asset you hold, then set Soneium as the destination in the Symbiosis widget. Review the quoted output and fee, then approve — delivery typically takes around 16 seconds as of September 2026.

Which chains can I bridge from to reach Soneium?

Inbound transfers come from networks such as Ethereum, Base, Polygon, Mantle, and Unichain. Just connect your wallet on any of these networks and select Soneium as the destination. The routing engine handles the path automatically.

What is the Soneium token?

Soneium is a Sony-backed Layer 2 network without a token of its own: gas on Soneium is paid in ETH, and Soneium's documentation says there are currently no plans for a native token. To get assets onto Soneium for swapping or trading, you bridge them in through Symbiosis.

Popular bridges

A few popular bridge routes

Two chains. One click

Bridge tokens to and from Soneium. Non-custodial, audited, no sign-up. Live quote above.

Open Soneium bridge

Soneium Bridge — Symbiosis banner background

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