Smart Contract Wallets Compared: Safe, Argent, Sequence & More

Smart Contract Wallet Overview

Smart contract wallets replace the single private key model of traditional EOA wallets with programmable on-chain logic. Instead of relying on a fixed secp256k1 signature check at the protocol level, a smart contract wallet validates transactions through code that can enforce multisig thresholds, social recovery, spending limits, session keys, and gas sponsorship.

The introduction of ERC-4337 in 2023 and EIP-7702 in the May 2025 Pectra upgrade removed the requirement for an EOA to initiate transactions, making smart contract wallets viable as primary accounts. This comparison covers the five most widely deployed smart contract wallet platforms: Safe, Argent, Sequence, Coinbase Smart Wallet, and ZeroDev.

Why Smart Contract Wallets Matter

An externally owned account (EOA) is an address derived from a public key on the secp256k1 curve. Wallets like MetaMask and Ledger are interfaces that hold the corresponding private key. If that key is lost or stolen, the account is unrecoverable. There is no way to batch transactions, set spending limits, or delegate partial signing authority.

Smart contract wallets solve these limitations by moving validation logic on-chain. The account itself is a deployed contract that can check signatures via EIP-1271 using any scheme: passkeys (secp256r1), multisig thresholds, or threshold signatures. The contract's rules can be upgraded, composed, and revoked without moving assets to a new address.

For mainstream adoption, account abstraction is the critical enabler. ERC-4337 introduces a separate mempool of UserOperations that bundlers submit on behalf of smart accounts. A paymaster contract can sponsor gas fees entirely, letting users interact with dApps without holding ETH. EIP-7702 extends this further by allowing existing EOAs to temporarily delegate to smart contract code, bridging the gap for users who already have assets at an EOA address.

Safe (Formerly Gnosis Safe)

Safe is the dominant smart contract wallet platform for treasuries and DAOs. As of Q1 2026, Safe reports 61 million total accounts, $35 billion in assets secured (representing over one-third of EVM DeFi TVL), and $600 billion in transaction volume during 2025. In that year, 18.3 million new accounts were deployed, with 98% on Layer 2 networks rather than Ethereum mainnet.

Safe's core architecture uses a threshold-based multisig model: an account requires M-of-N owner signatures to execute a transaction. ERC-4337 support is implemented as a module rather than a core contract change, which preserves backward compatibility with existing Safe deployments. Social recovery, spending allowances, and passkey signing are available through additional modules.

Safe's contracts have been audited across every major version from v0.0.1 through v1.5.0, with specific audits for the 4337 module, passkey module, and social recovery module. Safe is deployed on 120+ EVM-compatible networks. For institutional custody workflows, see our Safe multisig institutional treasury guide.

Argent

Argent operates two distinct products: Argent X, a browser extension for Starknet, and Argent Mobile, a mobile wallet covering Ethereum, Base, Arbitrum, Optimism, Polygon, and Starknet. On EVM chains, Argent Mobile uses ERC-4337 contracts. On Starknet, Argent X leverages the protocol's native account abstraction, which provides AA at the chain level without requiring the ERC-4337 infrastructure.

Argent's standout feature is guardian-based social recovery. Users designate trusted contacts or hardware wallets as guardians who can authorize key replacement if the primary signing key is lost. The wallet also enforces daily transfer limits that guardians must approve to override. Argent's smart contracts have not been breached since launch, and ChainSecurity has audited the Starknet account contracts.

For developers building on Starknet, Argent also offers a multisig product for team treasuries. Compared to Safe, Argent targets individual users rather than organizations, with a UX designed to feel like a traditional banking app. Learn more about social recovery wallet design patterns.

Sequence

Sequence is a smart contract wallet SDK built for gaming and embedded app experiences. Rather than a consumer-facing wallet app, Sequence provides developers with an embedded wallet, relayer, indexer, and marketplace toolkit. The wallet supports multiple signing keys with key rotation, ERC-20 gas fee payment, transaction batching, and session keys for autonomous gameplay actions.

Sequence supports 30+ EVM chains including Ethereum, Arbitrum, Base, Optimism, Polygon, Avalanche, BSC, Blast, and Gnosis. It also supports Layer 3 networks built on Arbitrum Orbit, OP Stack, and Avalanche Subnets. Gas sponsorship works through Sequence's relayer, which submits meta-transactions on behalf of users and settles costs with the game or app developer.

Security audits have been conducted by Consensys Diligence, Quantstamp, and Zellic. A Code4rena competitive audit ran in October 2025. Sequence's wallet contracts are designed without seed phrases: users authenticate via email, social login, or a linked EOA. For a broader look at seedless wallet implementations, see our dedicated comparison.

Coinbase Smart Wallet

Coinbase Smart Wallet launched in June 2024 as an ERC-4337 smart contract wallet with passkey-first authentication. Each account supports multiple concurrent owners, both passkey (secp256r1) and standard Ethereum address owners, with cross-chain replayable owner updates. Any single owner can transact independently without approval from others.

The wallet is deployed on Base, Ethereum, Arbitrum, Optimism, Polygon, Avalanche, BNB Chain, and Zora. Coinbase operates a paymaster that sponsors gas for apps integrating the wallet. On Base specifically, users can pay gas in USDC rather than ETH, which lowers the onboarding barrier for users who already hold stablecoins.

Recovery relies on the passkey itself syncing across iCloud Keychain or Google Password Manager, plus the option to add a second owner as a backup. Coinbase Smart Wallet does not implement guardian-based social recovery in the way Argent does. The contracts are open source on GitHub. For details on passkey-based authentication in crypto wallets, see our passkey wallet authentication research.

ZeroDev (Kernel)

ZeroDev is a developer SDK rather than a consumer wallet. Its Kernel smart account is a minimal, extensible contract compatible with ERC-4337, EIP-7702, and the modular ERC-7579 standard. ZeroDev reports powering over 5 million smart accounts across 30+ EVM networks.

Session keys are a core feature of the Kernel architecture. Developers can issue scoped permissions that limit a session key to specific contract calls, token amounts, or time windows. This is particularly useful for agentic wallet designs where an AI agent or automated system needs to transact within defined boundaries. Gas sponsorship works through standard ERC-4337 paymasters, and ZeroDev offers its own paymaster infrastructure alongside compatibility with Pimlico, Alchemy, and Biconomy.

Kernel v3.0 was audited by Chainlight, and ZeroDev states that all first-party plugins are audited before production release, though third-party plugins may not carry the same guarantee. The modular architecture means features like social recovery, passkey signing, and multisig are added as plugins rather than being baked into the core contract.

Feature Matrix: Detailed Comparison

The following table breaks down specific capabilities across all five wallets. Note that some features depend on modules or plugins that may need separate deployment.

How to Choose the Right Smart Contract Wallet

Each wallet targets a different audience and use case. The right choice depends on whether you are an individual user, a developer embedding wallets, or an organization managing a treasury.

• For DAO treasuries and institutional custody, Safe is the default choice. Its multisig model, extensive audit history, and deployment across 120+ networks make it the most battle-tested option.
• For individual users who want mobile-first self-custody with recovery guarantees, Argent's guardian system provides the strongest social recovery implementation, especially on Starknet.
• For game developers and app builders who need embedded wallets with session keys and gasless transactions, Sequence provides a complete SDK with relayer infrastructure.
• For onboarding mainstream users with passkey authentication, Coinbase Smart Wallet offers the simplest setup with institutional-grade gas sponsorship on Base.
• For developers building custom account abstraction flows with fine-grained session key permissions, ZeroDev's Kernel offers the most modular and extensible architecture.

For wallets in the Bitcoin ecosystem, the design constraints differ significantly. Bitcoin does not support on-chain smart contracts in the same way as EVM chains, but solutions like Spark enable programmable wallet features for Bitcoin and USDB stablecoin transfers. See our Bitcoin smart wallet comparison for alternatives on the Bitcoin network.

The ERC-4337 vs EIP-7702 Decision

Developers now face a choice between two account abstraction paths. ERC-4337 creates a fresh smart account with a new address: ideal for new users who can start with passkeys from day one. EIP-7702, shipped in Ethereum's Pectra upgrade (May 2025), lets an existing EOA temporarily delegate to smart contract code, preserving the original address and any assets or history attached to it.

ZeroDev's Kernel currently supports both standards. Most other wallets, including Safe, are actively developing EIP-7702 integration. For users who already hold assets at an EOA, EIP-7702 avoids the cost and complexity of migrating to a new contract address. For greenfield applications targeting new users, ERC-4337 remains the more mature path with broader infrastructure support from bundlers and paymasters.

Frequently Asked Questions

What is the difference between a smart contract wallet and a regular wallet?

A regular wallet (EOA) is simply a private key that signs transactions checked by the Ethereum protocol. A smart contract wallet is a deployed contract with programmable validation logic. It can enforce multisig, recovery, spending limits, and gas sponsorship rules that an EOA cannot. The tradeoff is higher deployment cost and smart contract risk.

Is ERC-4337 required for a smart contract wallet?

No. Smart contract wallets existed before ERC-4337: Safe (Gnosis Safe) launched in 2018 and used relay services for gas abstraction. ERC-4337 standardized this with a dedicated UserOperation mempool and bundler network, removing the need for custom relay infrastructure. EIP-7702 provides an alternative path for existing EOA addresses.

Which smart contract wallet is best for a DAO treasury?

Safe is the standard for DAO treasuries, securing over $35 billion in assets as of Q1 2026. Its M-of-N multisig model, transaction queue, and module ecosystem (spending allowances, streaming payments, governance integrations) are purpose-built for organizational fund management. No other wallet matches its deployment scale or audit history for this use case.

Can smart contract wallets work on Bitcoin?

ERC-4337 and EIP-7702 are Ethereum-specific standards. Bitcoin's scripting language does not support the same programmability, but Bitcoin Layer 2 solutions enable similar features. Technologies like FROST threshold signatures and self-custodial designs on Spark provide social recovery and multi-party signing for Bitcoin without requiring on-chain smart contracts.

What are session keys and why do they matter?

Session keys are temporary, scoped signing keys that allow a dApp or agent to transact on behalf of a user within defined limits: specific contracts, token amounts, or time windows. They eliminate the need to approve every transaction individually, which is critical for gaming, AI agent wallets, and high-frequency interactions. ZeroDev and Sequence offer the most mature session key implementations.

How does social recovery work in a smart contract wallet?

Social recovery allows designated guardians (trusted contacts, hardware wallets, or institutional cosigners) to replace a lost signing key without moving assets. Argent's implementation is the most user-friendly: guardians approve a key rotation after a time-locked delay. Safe offers social recovery as a module, and ZeroDev supports it through plugins. Coinbase Smart Wallet instead relies on passkey synchronization across cloud keystores.

Are smart contract wallets safe to use?

Smart contract wallets introduce smart contract risk that EOAs do not carry: a bug in the wallet contract could affect all users. All five wallets covered here have undergone external security audits. Safe's contracts have the longest track record (since 2018) and have secured tens of billions of dollars. The risk profile improves with audits, formal verification, bug bounties, and time in production.

This tool is for informational purposes only and does not constitute financial advice. Data is approximate and based on publicly available information as of Q1 2026. Features, chain support, and audit status change frequently. Always verify current capabilities directly with each project before making decisions.