Synapse vs zkSync Bridge Synapse leads by 1 point.
Synapse scores 1 point above zkSync Bridge, led by route coverage and transfer speed. Synapse ranks #11 and zkSync Bridge #13 of 18 published bridges. Every term of the gap is on the ledger below; the inputs are on the audit receipt.
Synapse51
vs
zkSync Bridge50
Scores are out of 100; published scores fall within 41–99 · ranks #11 and #13 of 18
Published gapAfter score rounding and bounds — see the note below5150+1.0
Weight is in points of the 86-point weighted total. Points are score points of the gap between the two.
EvidenceEvidence evidence medium vs evidence high — how well each score is supported, not the score itself
SynapseScore 51EVM-focused multichain bridge, with Solana reached through a separate bridgeStrength: Speed — 7/10Watch-out: Synapse's quote API answered "No bridge routes found" for USDC and ETH between Ethereum, Arbitrum, Optimism and Base on 2026-09-30, and again for ETH from Ethereum to Arbitrum and from Arbitrum to Optimism on 2026-10-23, when its /bridge/v2 endpoint returned HTTP 500. The bridge still settles transfers: its Ethereum contract (0x2796317b0fF8538F253012862c06787Adfb8cEb6) logged 50 TokenWithdraw and TokenMint events between 11 and 22 October 2026, the latest at 20:04 UTC on 22 October. Get a quote in its app before you rely on a routezkSync BridgeScore 50Native canonical bridge for Ethereum ↔ zkSync EraStrength: Trust — 8/10Watch-out: Smaller dapp ecosystem than the largest L2s
Quick facts
At a glance
FactSynapsezkSync Bridge
PricingSnapshotNo Synapse price could be read on 30 September 2026. The Synapse REST API (api.synapseprotocol.com), which its docs page docs.synapseprotocol.com/docs/Bridge/REST-API describes as the way to "retrieve quotes", returned "No bridge routes found" for USDC Ethereum to Arbitrum, Ethereum to Optimism and Arbitrum to Base and for ETH Ethereum to Arbitrum and Arbitrum to Optimism, and its /bridge/v2 endpoint returned "An unexpected error occurred in /bridge/v2. Please try again later." The Synapse docs pages read (Bridge, REST API, Supported Routes, Synapse Intent Network, contract pages) publish no fee rate, so the percentage the previous note carried is not repeated.ZKsync docs, "Bridging assets" (docs.zksync.io/zksync-protocol/rollup/bridging-assets, fetched 30 September 2026): no bridge fee is stated on that page; withdrawals carry a time cost - "To provide additional security, withdrawals in ZKsync Chains are delayed for 3 hours" - and the finality page (docs.zksync.io/zksync-protocol/rollup/finality) adds that proof generation "typically takes about an hour". The ZKsync Bridge front end (portal.zksync.io/bridge, titled "ZKsync Bridge | Transfer funds between ZKsync and Ethereum") renders client-side, so no live quote was read.
Asset coverageEditorialToken transfers through Synapse's legacy nUSD/nETH pools and its RFQ relayer network, where a route can be quotedETH and registered ERC-20s
Region fitSnapshotus, europe, globalglobal
From the published criteria
Which should you pick?
Synapse
51#11 of 18
Leads
Pick it when
Pick Synapse if route coverage matters most — it scores 6/10 to zkSync Bridge's 1/10 there (weight 28).
Strength
Speed — 7/10
Tradeoff
Synapse's quote API answered "No bridge routes found" for USDC and ETH between Ethereum, Arbitrum, Optimism and Base on 2026-09-30, and again for ETH from Ethereum to Arbitrum and from Arbitrum to Optimism on 2026-10-23, when its /bridge/v2 endpoint returned HTTP 500. The bridge still settles transfers: its Ethereum contract (0x2796317b0fF8538F253012862c06787Adfb8cEb6) logged 50 TokenWithdraw and TokenMint events between 11 and 22 October 2026, the latest at 20:04 UTC on 22 October. Get a quote in its app before you rely on a route
zkSync Bridge
50#13 of 18
Pick it when
Pick zkSync Bridge if trust matters most — it scores 8/10 to Synapse's 4/10 there (weight 26).
Strength
Trust — 8/10
Tradeoff
Smaller dapp ecosystem than the largest L2s
Self-identify in 10 seconds
Which one is actually for you?
SynapseLeads
Choose Synapse if route coverage matters most
Route coverage: 6/10 against 1/10 for zkSync Bridge (weight 28)
Transfer speed: 7/10 against 5/10 for zkSync Bridge (weight 22)
SynapseScore 51EVM-focused multichain bridge, with Solana reached through a separate bridgeStrength: Speed — 7/10Watch-out: Synapse's quote API answered "No bridge routes found" for USDC and ETH between Ethereum, Arbitrum, Optimism and Base on 2026-09-30, and again for ETH from Ethereum to Arbitrum and from Arbitrum to Optimism on 2026-10-23, when its /bridge/v2 endpoint returned HTTP 500. The bridge still settles transfers: its Ethereum contract (0x2796317b0fF8538F253012862c06787Adfb8cEb6) logged 50 TokenWithdraw and TokenMint events between 11 and 22 October 2026, the latest at 20:04 UTC on 22 October. Get a quote in its app before you rely on a route
zkSync Bridge
Choose zkSync Bridge if trust matters most
Trust: 8/10 against 4/10 for Synapse (weight 26)
Route clarity: 6/10 against 3/10 for Synapse (weight 24)
zkSync BridgeScore 50Native canonical bridge for Ethereum ↔ zkSync EraStrength: Trust — 8/10Watch-out: Smaller dapp ecosystem than the largest L2s
Criterion by criterion
Scorecard
Published criteria · weight in points of 868 of 8 cells scored. Strength is read from the evidence file; the weight is the published one. Methodology
Route coverage
by 5 of 10weight 6.7 of 86Synapse leads
Synapse6/10 out of 10
zkSync Bridge1/10 out of 10
Route clarity
by 3 of 10weight 5.8 of 86zkSync Bridge leads
Synapse3/10 out of 10
zkSync Bridge6/10 out of 10
Transfer speed
by 2 of 10weight 5.3 of 86Synapse leads
Synapse7/10 out of 10
zkSync Bridge5/10 out of 10
Trust
by 4 of 10weight 6.2 of 86zkSync Bridge leads
Synapse4/10 out of 10
zkSync Bridge8/10 out of 10
Score dimensions
weights sum to 86
The published score is five dimensions, each weighted for the category. "Published criteria" is the criteria block above; the other four are the engine's own terms — availability, friction, trust record, measured data. Each bar is one side's points out of that dimension's maximum; the weight beside the name is its points of the 86-point weighted total. The published criteria above can fill 24 of the block’s 30. A weight marked “constant here” belongs to a dimension every ranked product in the category holds at the same value: it still counts in the total, and it orders nothing here.
Availabilityweight 20 of 86
Synapse20/20zkSync Bridge14/20
Synapse leads
Published criteriaweight 30 of 86
Synapse12/30zkSync Bridge11.8/30
Synapse leads
Frictionweight 10 of 86 · constant here
Synapse2.7/10zkSync Bridge2.7/10
Tie
Trust recordweight 8 of 86
Synapse3.2/8zkSync Bridge3.2/8
Tie
Measured dataweight 18 of 86
Synapse6.9/18zkSync Bridge12.5/18
zkSync Bridge leads
Decision rulePublished order
Choose Synapse unless the term zkSync Bridge leads on is the one you are buying.
Pick zkSync Bridge if trust matters most — it scores 8/10 to Synapse's 4/10 there (weight 26).
The published order weighs every criterion the same way for everyone. To weigh them your way, run .
From the published order
Next best action
If this isn't your case
Other matchups worth comparing
How you can lose money here, and what the ranking scores
Verification failure: an invalid state or transfer is accepted.
Not assessed by this ranking: Contract failure, Control failure, Liveness failure, Custody failure, Regulatory failure, Execution failure, Exit failure. A high place says nothing about these; the Methodology tab says what each means.
Also scored, as cost, quality or a summary of several families: Route coverage (28%), Route clarity (24%), Execution speed (22%).
Questions
Frequently asked questions
Synapse scores 1 point above zkSync Bridge, led by route coverage and transfer speed. Published scores, out of 100: Synapse 51 (rank 11 of 18 bridges), zkSync Bridge 50 (rank 13 of 18).
Reviewed means both products compared here was read against its sources on or after that date; every ranked category is re-read at least every 45 days. Models research, extract and parse. A deterministic engine ranks. Every quote passes an adversarial refute pass.
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