Layer 2 Solutions Comparison 2026 Speed and Cost
Arbitrum processes 247,000 transactions per second while Ethereum mainnet handles just 15 TPS—that’s a 16,500% difference that matters for your wallet’s bottom line. Last verified: April 2026
Executive Summary
| Layer 2 Solution | TPS Capacity | Avg. Gas Fee (USD) | Settlement Time | Total Value Locked | Smart Contract Support |
|---|---|---|---|---|---|
| Arbitrum One | 247,000 | $0.08 | 7 days | $8.2 billion | Full EVM |
| Optimism OP Mainnet | 4,700 | $0.12 | 7 days | $6.1 billion | Full EVM |
| Polygon zkEVM | 1,100 | $0.05 | 1 hour | $1.8 billion | Full EVM |
| Starknet | 10,000 | $0.03 | 12 minutes | $340 million | Cairo-based |
| Linea | 1,400 | $0.06 | 15 minutes | $820 million | Full EVM |
| Base | 65,000 | $0.04 | 7 days | $2.9 billion | Full EVM |
| Scroll | 90,000 | $0.07 | 24 hours | $1.2 billion | Full EVM |
| Ethereum Mainnet | 15 | $2.40 | Immediate | N/A | Full EVM |
Speed Performance: Where Layer 2s Leave Mainnet Behind
Arbitrum’s 247,000 TPS capability doesn’t tell the whole story about what’s actually happening on-chain right now. Real-world throughput runs about 65% lower than theoretical maximums across all solutions. Right now in April 2026, Arbitrum averages 167,000 TPS during peak hours, while Optimism delivers consistent 3,100 TPS. These aren’t minor differences—they’re architectural decisions that dictate user experience.
Starknet processes transactions differently because it uses validity proofs instead of optimistic rollup assumptions. Your transaction settles to mainnet in 12 minutes on Starknet versus 7 days on Arbitrum or Optimism. That speed advantage costs something though: Starknet charges $0.03 per transaction while Arbitrum asks for $0.08. If you’re making 100 trades monthly, Starknet costs $3 against Arbitrum’s $8—a savings that compounds fast for active traders.
Base deserves attention here. Built on Coinbase’s infrastructure with 65,000 TPS, it processes transactions almost as fast as Arbitrum while charging just $0.04 per transaction. Base’s value locked grew 340% year-over-year to $2.9 billion, suggesting developers value both its speed and affordability. That combination explains why Base hosts 1,247 unique applications as of this month.
Settlement time matters more than most traders realize. Arbitrum and Optimism need 7 days for your funds to return to Ethereum properly secured. Starknet does it in 12 minutes. Polygon zkEVM manages it in 60 minutes. That week-long wait kills liquidity for certain strategies. High-frequency traders migrate to Starknet or Linea specifically because they can’t afford locked capital sitting in a week-long settlement queue.
Cost Analysis: Gas Fees That Actually Matter to Your Wallet
| Transaction Type | Ethereum (USD) | Arbitrum (USD) | Optimism (USD) | Polygon zkEVM (USD) | Starknet (USD) |
|---|---|---|---|---|---|
| Simple ETH Transfer | $3.20 | $0.06 | $0.09 | $0.04 | $0.02 |
| Token Swap (Uniswap) | $18.50 | $0.42 | $0.65 | $0.28 | $0.15 |
| NFT Mint | $42.00 | $1.20 | $2.10 | $0.85 | $0.38 |
| Staking Deposit | $28.00 | $0.35 | $0.52 | $0.22 | $0.12 |
| Smart Contract Call | $15.60 | $0.28 | $0.41 | $0.19 | $0.09 |
An NFT mint on Ethereum costs $42.00 right now. That same operation on Arbitrum runs $1.20. On Starknet? Just $0.38. For someone minting 50 NFTs across a collection, Ethereum obliges you to spend $2,100 while Starknet asks for $19. That $2,081 difference isn’t theoretical—it’s real money leaving your account.
Polygon zkEVM splits the difference. Its zero-knowledge proof architecture delivers $0.04 for simple transfers and $0.85 for NFT mints. You’re paying more than Starknet but 98% less than Ethereum. The architecture choice matters here: zkEVM validates proofs on-chain using cryptographic certainty, which costs more computationally than Starknet’s approach but settles faster than Arbitrum’s optimistic rollups.
Base’s gas fees clocked in 23% lower than Optimism in 2026, though both use the same OP Stack technology. The difference comes from Base’s deeper liquidity and higher transaction volume, which spreads fixed costs across more users. Optimism charges $0.12 for an average transaction while Base asks for $0.04. That 67% cost advantage pushed $580 million into Base’s ecosystem over six months.
Detailed Feature Breakdown: What You Actually Get
| Solution | Proof Type | EVM Compatible | Finality Time | Cross-chain Bridge Speed | Sequencer Type |
|---|---|---|---|---|---|
| Arbitrum One | Optimistic | Yes | 7 days | 15-20 minutes | Centralized |
| Optimism | Optimistic | Yes | 7 days | 12-18 minutes | Centralized |
| Polygon zkEVM | ZK Proof | Yes | 1 hour | 45-60 minutes | Decentralized |
| Starknet | ZK Proof | No (Cairo) | 12 minutes | 8-12 minutes | Decentralized |
| Linea | ZK Proof | Yes | 15 minutes | 10-15 minutes | Centralized |
| Base | Optimistic | Yes | 7 days | 14-19 minutes | Centralized |
| Scroll | ZK Proof | Yes | 24 hours | 20-30 minutes | Decentralized |
EVM compatibility determines whether your existing smart contracts run unchanged. Arbitrum, Optimism, Base, Polygon zkEVM, Linea, and Scroll all support EVM bytecode perfectly. You copy-paste your Solidity contracts and they work. Starknet breaks this pattern by requiring Cairo language. That incompatibility costs Starknet adoption but it buys performance—Cairo’s design lets Starknet hit 10,000 TPS while EVM solutions struggle to break 5,000 without centralized sequencers.
Centralized sequencers on Arbitrum, Optimism, Base, and Linea mean one entity orders transactions before they hit the network. Decentralized sequencers on Polygon zkEVM and Starknet distribute this power among multiple actors. Decentralization sounds better in theory. Practice shows centralized sequencers deliver more stable, predictable fees and lower latency. Arbitrum keeps its centralized sequencer despite months of community pressure because it works—transaction costs stayed flat while throughput grew 340%.
Proof type separates rollups fundamentally. Optimistic rollups (Arbitrum, Optimism, Base) assume transactions are valid unless challenged, cutting computational overhead at the cost of 7-day settlement. Zero-knowledge rollups (Starknet, Polygon zkEVM, Linea, Scroll) compute proofs that guarantee validity, settling faster but requiring expensive proof generation. Starknet’s 12-minute finality proves ZK systems work for real-time applications, yet Arbitrum’s easier programming model captured 34% more TVL.
Key Factors Driving Your Choice
1. Developer Ecosystem Maturity
Arbitrum hosts 4,847 smart contracts built across DeFi, gaming, and NFT applications. Optimism runs 2,100. Starknet barely cracks 340 contracts. This isn’t trivial—a mature ecosystem means battle-tested libraries, existing liquidity pools, and communities that solve problems you’ll encounter. If you’re launching a token, you want Arbitrum’s infrastructure. If you’re building experimental tech that needs finality guarantees, Starknet’s smaller ecosystem forces you to build more yourself.
2. Total Value Locked (TVL) and Liquidity
Arbitrum’s $8.2 billion TVL means when you swap 100 ETH for USDC, slippage rarely exceeds 0.5%. Smaller chains like Starknet with $340 million TVL see 3-7% slippage on that same trade. Liquidity compounds itself—traders use where volume exists, which attracts more liquidity, which lowers costs for subsequent traders. Arbitrum’s 24x TVL advantage over Starknet translates to material differences in execution quality.
3. Settlement Guarantees for Institutional Users
Institutions moving capital across chains care about finality certainty more than retail traders do. Starknet’s 12-minute settlement with cryptographic proofs beats Arbitrum’s 7-day optimistic assumptions for high-volume treasury operations. BlackRock’s digital assets division specifically cited faster settlement as their migration target in March 2026. This explains Starknet’s 127% institutional inflow growth despite its smaller developer base.
4. Gas Fee Predictability
Arbitrum’s fees fluctuate 12-18% daily based on mainnet calldata costs. Polygon zkEVM’s prove-based model keeps fees within 6% variance daily because proof generation costs stay constant. For businesses operating on thin margins—market makers, arbitrage bots, derivative traders—predictable $0.05 fees beat unpredictable $0.06-$0.10 swings. Polygon zkEVM captured $340 million from professional traders specifically for this reason in Q1 2026.
How to Use This Data
Choose by Transaction Volume
Making under 10 transactions monthly? Cost barely matters—pick the ecosystem where your preferred apps live. Doing 100+ transactions monthly? Starknet’s $0.03 fees cost $3 versus Arbitrum’s $8, saving $60 annually on low volume but $600 on high volume. Run your own transaction count through our fee calculator at cryptodataindex.com/l2-fee-tool to see which solution saves you real money.
Match Finality Requirements to Settlement Needs
If you’re moving capital that needs on-chain security guarantees within hours, Starknet or Polygon zkEVM work. If you’re parking stablecoin yield or making speculative positions that can wait a week, Arbitrum’s superior liquidity makes settlement timing irrelevant. The 7-day wait costs nothing if you’re not touching that capital anyway. Institutions locking yield typically stay on Arbitrum; treasury operators dealing with timing-sensitive transfers migrate to Starknet.
Size Positions to Liquidity Depth
Arbitrum’s $8.2B TVL supports $2-3M swaps with under 1% slippage. That same trade on Starknet triggers 8-12% slippage due to $340M total liquidity. Check actual liquidity pools using tools like Aave’s risk dashboard or direct DEX APIs before committing capital. Moving $5M? You’re Arbitrum or Base only. Moving $100K? Most Layer 2s work fine. This matters exponentially more for institutions than retail.
Test Cost Differences Real-Time
Our gas tracker at cryptodataindex.com updates every 12 seconds with current fees across all eight major Layer 2 solutions. Arbitrum’s $0.08 and Starknet’s $0.03 are April 2026 averages—your actual transaction might cost $0.12 on Arbitrum or $0.01 on Starknet depending on network load. Use the tracker to see historical volatility before committing positions. Arbitrum showed $0.04-$0.18 ranges in March; Starknet stayed $0.02-$0.05. That stability matters for operations planning.
Frequently Asked Questions
Which Layer 2 has the lowest fees in 2026?
Starknet charges $0.03 per transaction on average, beating every competitor. However, lowest fees come with tradeoffs: Starknet uses Cairo instead of EVM, meaning fewer applications (340 vs Arbitrum’s 4,847), lower liquidity ($340M vs Arbitrum’s $8.2B), and less developer tooling. For simple transfers and high-frequency trading, Starknet wins. For accessing diverse DeFi applications, you’d sacrifice cost savings for functionality. Most users find the $0.05-0.08 range on Polygon zkEVM, Base, or Linea represents the practical sweet spot between cost and usability.
How fast can I get my money back to Ethereum mainnet?
Withdrawal speed depends on proof type. Starknet’s validity proofs settle in 12 minutes because cryptographic certainty is final immediately. Polygon zkEVM’s proofs need 1 hour while Linea requires 15 minutes—all use ZK proofs and settle when proof generation completes. Arbitrum and Optimism need 7 days for their optimistic assumptions to become finalized against challenge. If you need capital tomorrow, Starknet and Linea work. If you can wait, Arbitrum’s week-long window costs nothing extra but its superior liquidity might save you more in slippage than you’d earn from earlier withdrawal on alternatives.
Is my smart contract code compatible with these Layer 2s?
Full EVM compatibility means yes: Arbitrum, Optimism, Base, Polygon zkEVM, Linea, and Scroll all support Solidity smart contracts without modification. Deploy identical bytecode and it runs identically. Starknet breaks this pattern—you must rewrite Solidity in Cairo, requiring 4-6 weeks of development work per contract. Cairo isn’t harder per se, just different. That difference explains why 94% of smart contract deployments land on EVM-compatible Layer 2s despite Starknet’s superior speed. Switching languages kills adoption momentum.
Which Layer 2 should I recommend to friends?
First-time users should pick Arbitrum or Base because their massive developer ecosystems and deep liquidity mean everything “just works.” You won’t hit liquidity problems, applications run smoothly, and community answers exist
