Base to Optimism Bridge Guide 2026: Fastest & Cheapest Ways

## ANTI-LOSS PROTOCOL: Read Before You Bridge **Never bridge your full balance in one transaction.** Send a test amount first (0.001 ETH or equivalent). Verify it arrives on Optimism before moving the rest. One wrong network selection and your funds are gone. --- Base and Optimism are two of the biggest Ethereum Layer 2 networks in 2026. Moving funds between them should be cheap and fast. But if you pick the wrong bridge, you can pay 3x more than necessary. This guide covers the three cheapest ways to bridge from Base to Optimism, ranked by total cost. ## Speed & Cost Comparison (June 2026) | Method | Avg Time | Est. Gas Fee | Total Cost | Best For | |--------|----------|-------------|------------|----------| | Across Protocol | 1-3 min | $0.50-$1.50 | $0.50-$1.50 | Most users | | Hop Exchange | 2-5 min | $1-$3 | $1-$3 | Large transfers | | Superbridge (Native) | 5-15 min | $1-$4 | $1-$4 | Maximum security | **Verdict:** Across Protocol wins for speed and cost. Hop Exchange is the backup for large amounts. Native bridges are slowest but most secure. ## Method 1: Across Protocol (Fastest & Cheapest) Across uses intents-based bridging. A relayer front-runs your funds on Optimism and gets repaid on Base. You skip the 7-day rollup withdrawal delay entirely. **Step 1:** Go to **across.to** in your wallet browser. **Step 2:** Connect your wallet (MetaMask, Coinbase Wallet, or Rabby). **Step 3:** Set source chain to "Base" and destination to "Optimism." **Step 4:** Select the token you want to bridge (ETH, USDC, USDT, or DAI). **Step 5:** Enter the amount. Across shows the exact amount you will receive on Optimism before you confirm. **Step 6:** Confirm the transaction. Funds arrive on Optimism in 1-3 minutes. **Why Across wins for Base-to-Optimism:** Both chains are OP Stack rollups. Across can settle between them without touching Ethereum mainnet, keeping fees under $1.50. ## Method 2: Hop Exchange (Best for Large Transfers) Hop Exchange uses AMM-style liquidity pools. It has deeper liquidity than Across for transfers over $10,000. **Step 1:** Go to **app.hop.exchange**. **Step 2:** Connect your wallet. **Step 3:** Set source to "Base" and destination to "Optimism." **Step 4:** Choose your token and amount. **Step 5:** Review the fee breakdown. Hop shows the estimated output on Optimism. **Step 6:** Confirm. Transfers complete in 2-5 minutes. **When to use Hop over Across:** If you are moving more than 5 ETH or $10,000 in stablecoins, Hop's deeper pools give you a better rate with less slippage. ## Method 3: Superbridge / Native OP Stack Bridge (Most Secure) If you prefer maximum security over speed, use the native OP Stack bridge via Superbridge. **Step 1:** Go to **superbridge.app**. **Step 2:** Connect your wallet. **Step 3:** Set source to "Base" and destination to "OP Mainnet" (Optimism). **Step 4:** Select your token and amount. **Step 5:** Confirm. The native bridge takes 5-15 minutes because it routes through Ethereum mainnet for settlement. **Trade-off:** Higher security (no relayer risk) but slower and slightly more expensive. ## Common Issues & Fixes **"Funds not showing on Optimism after bridging"** Three things to check: 1. **Did you add Optimism to your wallet?** In MetaMask: Settings → Networks → Add Network. Optimism RPC: https://mainnet.optimism.io, Chain ID: 10. 2. **Did the bridge transaction confirm?** Check the Base explorer (basescan.org). If the transaction shows "Success," the bridge has your funds. Across and Hop settle in 1-5 minutes. Native bridges can take up to 15 minutes. 3. **Did you import the token?** If you bridged a token other than ETH, you may need to import its contract address on Optimism. Go to optimistic.etherscan.io, search your wallet address, find the token, and copy its contract address. Then "Import Token" in your wallet. **"Bridge fee is higher than expected"** Gas on Base fluctuates. If the fee seems high, wait 10-15 minutes and try again. Base gas typically drops during off-peak hours (weekends and early morning UTC). **"Across says 'no relayers available'"** This happens during high congestion. Switch to Hop Exchange (Method 2) or wait 5-10 minutes for a relayer to come online. ## The Bottom Line | Your Situation | Best Route | |----------------|-----------| | Under $1,000 | Across Protocol (Method 1) | | $1,000 - $10,000 | Across Protocol (Method 1) | | Over $10,000 | Hop Exchange (Method 2) | | Maximum security | Superbridge (Method 3) | Bridging between Base and Optimism is one of the cheapest cross-chain moves in crypto. Both are OP Stack rollups, so fees stay low and settlement is fast. **Need to compare fees across more networks?** Check our [Compare Network Fees](https://cryptonetworkguide.com/) tool for real-time gas costs on Base, Optimism, Arbitrum, Ethereum, Polygon, and Solana.