Sonic Gas Tracker

Sonic is not a rollup posting data back to Ethereum — it's an independent EVM Layer 1, built from Fantom's technology stack. Blocks are ordered by Lachesis, a leaderless, DAG-based aBFT consensus protocol that gives Sonic deterministic finality in well under a second, which is why even the slow tier below clears fast compared to most other chains this tracker covers.

Gas is paid in S, Sonic's native token, but the network prices it through the legacy eth_gasPrice model rather than Ethereum's EIP-1559 base-fee-plus-tip auction. There's no per-block base fee that burns and resets; every node quotes a single gas price, and this tracker builds its slow, average, and fast tiers around that one number. In practice it barely moves — Sonic's client pins a network-wide gas price floor around 50 gwei, and because block space is rarely contested, the priority tip on top of that floor is usually negligible.

What leaves your wallet is still that gas price multiplied by gas units consumed, and units work exactly as they do on Ethereum: a plain S transfer costs 21,000 gas, while a swap or contract call costs more depending on what it touches.

Sonic doesn't burn any part of a transaction fee the way Ethereum burns its EIP-1559 base fee. Instead it splits every fee automatically through a program called Fee Monetization, or FeeM: 10% goes to the validator that produced the block, and the remaining 90% is routed to the Fee Monetization contract for the application your transaction interacted with — not back to you.

• Only registered apps collect anything — A project has to opt its contracts into FeeM to receive a share. Sending S to a plain wallet address, or calling a contract that never registered, still costs the same gas — the 90% share for that transaction simply isn't collected by anyone.
• Multi-app transactions split proportionally — If a single transaction touches more than one registered contract, the 90% share is divided by how much gas each one consumed — a contract responsible for 63% of the gas gets 63% of that transaction's developer share.
• It doesn't lower what you pay — FeeM changes who receives the fee after your transaction settles. The gas price and gas units this tracker quotes are exactly what leaves your wallet, regardless of how that amount gets divided afterward.

Most Sonic confusion traces back to its rebrand history rather than to the fees themselves.

• Sonic isn't just a renamed Fantom Opera — Sonic Labs launched Sonic as a new mainnet, with FTM upgradeable to S at a 1:1 rate through an official migration tool that ran through March 2025. Fantom Opera, the original chain, still runs on its own — moving assets between the two isn't a simple network switch in your wallet.
• FeeM pays the app, not the sender — Seeing "fee monetization" mentioned in a dApp's docs doesn't mean part of your gas comes back to you. The developer share goes to whichever registered contract you interacted with, never to the wallet that paid the fee.
• You still need S for every transaction — Even when swapping or bridging other assets on Sonic, gas is paid in native S. A wallet holding only bridged stablecoins or other tokens can't cover the fee.
• Sonic Gateway bridges to Ethereum, not to Fantom Opera — The Sonic Gateway moves assets between Sonic and Ethereum. It's a separate system from the FTM-to-S upgrade tool, and it isn't how you'd move funds back to the original Fantom Opera chain.