Bridge ETH from Ethereum to OP Mainnet: fees compared

OP Mainnet native bridge rows are reference-grade here; intent fills dominate the ranked set. OP Mainnet shares the OP Stack bridge design with Base, so the canonical deposit path sits beside intent fillers. As on Ethereum → Base, the APIs return an OP Stack Native row here, so the canonical quote can be read directly against the fillers.

Snapshot #45 (2026-10-24 04:05 UTC), tier by tier

• $20: Across 1.16 bps (ETA 2s), then NEAR Intents 1Click 1.56 bps (ETA 48s), then Mayan FAST_MCTP via Mayan 7.26 bps (ETA 35s) (15 ranked).
• $200: Across 0.98 bps (ETA 2s), then NEAR Intents 1Click 1.28 bps (ETA 48s), then Mayan FAST_MCTP via Mayan 4.42 bps (ETA 35s) (14 ranked).
• $2,000: Across 0.80 bps (ETA 3s), then NEAR Intents 1Click 1.25 bps (ETA 48s), then Mayan FAST_MCTP via Mayan 4.54 bps (ETA 35s) (14 ranked).

How wide is the ETH spread from Ethereum to OP Mainnet?

At $200 the ranked set runs from 0.98 bps (Across) through a median of 28.70 bps to 142.01 bps (deBridge DLN via deBridge). 4 of 14 ranked quotes cost under 10 bps, so on a $200 transfer the gap between first and last is about $2.82.

Further down the $200 board: #4 Relay 6.00, #5 Layerswap via LI.FI 25.35, #6 Across via LI.FI 25.98, #7 LI.FI Intents via LI.FI 26.42, #8 Relay via LI.FI 30.99, #9 Mayan FAST_MCTP via LI.FI 33.97 (bps).

Best $200 quote per API (rows returned): Across 0.98 bps for Across (1); NEAR Intents 1Click 1.28 bps for NEAR Intents 1Click (1); Mayan 4.42 bps for Mayan FAST_MCTP (2); Relay 6.00 bps for Relay (1); LI.FI 25.35 bps for Layerswap (7); Symbiosis 73.81 bps for Symbiosis (1); deBridge 142.01 bps for deBridge DLN (1).

Size sensitivity ($20 → $200 → $2,000, bps): Across 1.16 → 0.98 → 0.80; NEAR Intents 1Click 1.56 → 1.28 → 1.25; Mayan FAST_MCTP via Mayan 7.26 → 4.42 → 4.54.

Platform/integrator fees reported inside quotes on this route: LI.FI 25 bps on 7 row(s); NEAR Intents 1Click 1 bps on 1 row(s).

Quoted arrival ranges from 2s (Across) to 15 min (Mayan FAST_MCTP); these are API estimates, not measured arrivals.

Gas: every bridge on this route is shown with the same source-chain gas estimate — upswap gas basis v1, the median of the quote APIs' own estimates for Ethereum ETH in each run. In snapshot #45 it was $0.012: 5.9 bps of $20, 0.59 bps of $200, 0.059 bps of $2,000, or 2.1% of the median ranked $200 quote (28.70 bps). Ethereum mainnet gas is paid in ETH. The estimate is shown in its own column and never folded into bps; Across gas is never counted.

Quoted ETA by row, top 10 at $200 on Ethereum → OP Mainnet: Across 2s, NEAR Intents 1Click 48s, Mayan FAST_MCTP via Mayan 35s, Relay 2s, Layerswap via LI.FI 15s, Across via LI.FI 2s, LI.FI Intents via LI.FI 30s, Relay via LI.FI 2s, Mayan FAST_MCTP via LI.FI 3s, NEAR Intents 1Click via LI.FI 48s.

Practical read for ETH Ethereum → OP Mainnet

1. Across leads at every sampled size, which makes it the default to check first.

2. NEAR Intents 1Click trails by only 0.29 bps at $200, so ETA (2s vs 48s) or a frontend you trust can reasonably decide it.

3. Over 40 full runs at $200 the cheapest slot went to Across (34), NEAR Intents 1Click (6); 4 of 14 UTC days are covered, so treat this as a short trail, not a trend.

Open items: no real-money transfer on Ethereum → OP Mainnet yet (planned after launch); security notes for these bridges stay unverified until sourced.