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Dev Portal

MCP Server

Swap & Bridge

Resources

Swap

All bridge routes

Base Bridge

Bridge any token to and from Base — the Coinbase L2 across 50+ networks — ETH, USDC, USDT and dozens more in one non-custodial transaction. Median delivery 28 seconds via Symbiosis routing layer.

Open Base bridge

Numbers

Proven performance

+ chains

Supported Networks

+ chains

Supported Networks

years

On the Market

years

On the Market

sec

Average Bridge Time

sec

Average Bridge Time

incidents

Since Launch

incidents

Since Launch

How to bridge to Base

A real case from June 2026: a user bridged 2,180 USDC (~$2,180) from BNB and received 2,178 USDbC on Base via Symbiosis — 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 the exact flow:

Picked the source. BNB as source, Base as destination — the USDC sat in a BNB wallet and the goal was access to Base DeFi and Coinbase-native apps.
Connected wallets. MetaMask on the BNB side, MetaMask on the Base side. Symbiosis resolved the destination address automatically from the connected wallet — no manual paste required.
Entered the amount. 2,180 USDC (~$2,180). The BNB wallet had enough balance to cover network gas.
Reviewed the quote. Symbiosis displayed the exact USDbC amount on Base, the flat Symbiosis fee in USD, and ETA. The quote was locked in before signing — 2% slippage tolerance protects against sudden price moves.
Signed and confirmed. Signed the BNB transaction in MetaMask. USDbC arrived in MetaMask within ~30 sec. The transaction is fixed on-chain — verifiable on Symbiosis Explorer, BscScan, and BaseScan.

Bridge to Base — live route: 2,180 USDC (BNB Chain) → USDbC (Base) · Symbiosis

About the BNB to Base route

Volume and traffic. $24.64M total bridged across 12,147 transactions and 6,803 unique wallets — $19.46M outbound from Base (8,115 tx) and $5.17M inbound to Base (4,032 tx).
Speed. Median delivery 45 seconds outbound and 28 seconds inbound; 90th percentile 246s outbound, 86s inbound.
Success rate. 100% — every confirmed transaction in the period was delivered, no failed bridges or stuck funds.
Transaction size. Whale-share: 85% of outbound volume comes from $10K+ transactions.
Top tokens. Outbound: WETH 52.82% ($10.28M), USDbC 46.52% ($9.06M). Inbound: ETH 26.46% ($1.37M), USDC 21.25% ($1.10M), USDT 20.12% ($1.04M).
Top inbound source: BNB. 30.71% of all inbound liquidity ($1.59M over 90 days) — ahead of Ethereum (19.89%), Tron (17.19%). +3% QoQ growth on inbound, +238% QoQ on outbound.

Source: Symbiosis Explorer (on-chain routing layer log).

Real on-chain data, Symbiosis routing layer, March–June 2026. Refreshed quarterly.

Fees

Sample bridge quotes

Live quotes from the Symbiosis routing engine for the BNB to Base corridor (USDC to USDbC), across four amount tiers. Flat protocol fee — cost grows with route complexity, not amount.

Amount

Receive

Fee + Gas

Time

100 USDC

99.42 USDbC

0.58 USDC

~35s

500 USDC

499.08 USDbC

0.92 USDC

~40s

1 000 USDC

998.66 USDbC

0.01 000USDC

~46s

5 000 USDC

4 995 USDbC

1 000USDC

~53s

~46s

Bridge now

Check your own quote

Above are averages — enter your amount below for a live quote with exact fees, route preview, and one-click bridge.

Benefits

Why Symbiosis

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.

$8B+ across 54 chains

FAQs

Got questions?

Still have questions? Contact us and we’ll help you out.

How do I bridge from Ethereum to Base?

Open the widget above and set Source to Ethereum, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.

Which is the best Base bridge?

Symbiosis is a non-custodial cross-chain aggregator covering multiple networks. Funds remain in your wallet at every step — the contract executes the swap and release atomically. No sign-up, no KYC, audited contracts.

How do I bridge from Abstract to Base?

Open the widget above and set Source to Abstract, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.

How do I bridge from Arbitrum to Base?

Open the widget above and set Source to Arbitrum, Destination to Base. Pick your token on each side — the widget pulls a live quote and shows the receive amount and fee before you sign. No native gas required on the destination.