ERC-721 vs ERC-1155: Which NFT Standard Should You Use?

ERC-721 and ERC-1155 are the two most widely used Ethereum token standards for NFTs: ERC-721 defines purely unique, one-of-a-kind tokens, while ERC-1155 supports both unique and semi-fungible tokens within a single contract, along with far more gas-efficient batch operations.

Both are standards, not products — they're technical specifications that any NFT project can implement, and the choice between them shapes what's possible (and how expensive it is) for a given collection or game.

ERC-721: the original NFT standard

ERC-721, finalized in 2018, established the core idea of a non-fungible token: each token has a unique ID, and ownership of that specific ID is individually tracked on-chain. This is the standard behind most well-known PFP collections and generative art projects — every token is distinct, even if visually similar to others in the same collection.

Its main limitation is efficiency. Because each token is a fully separate entity, minting or transferring many tokens at once requires many separate operations, each costing its own gas fee.

ERC-1155: the multi-token standard

ERC-1155, introduced in 2019, was designed to solve exactly that inefficiency. A single ERC-1155 contract can manage many different token types simultaneously — some unique (functioning like ERC-721 tokens), others fungible or semi-fungible (multiple identical copies of the same item, like a stack of in-game potions).

Its key feature is batch operations: you can mint, transfer, or burn multiple token types in a single transaction, dramatically reducing gas costs compared to doing the same operations one at a time under ERC-721.

Side-by-side comparison

	ERC-721	ERC-1155
Token uniqueness	Always unique	Can be unique, fungible, or semi-fungible
Multiple token types per contract	No — one contract per collection typically	Yes — many token types in one contract
Batch minting/transfers	Not natively	Yes, natively supported
Gas efficiency for large collections	Lower	Higher
Best suited for	Generative art, unique 1-of-1 pieces, PFP collections	Gaming items, tickets, editions, mixed unique + repeated assets
Adoption/tooling maturity	Extremely mature, widely supported	Mature, growing, slightly less universal wallet/marketplace support historically

When each standard makes more sense

ERC-721 tends to fit better when:

• Every token is genuinely meant to be one-of-a-kind (generative art, unique collectibles).
• Simplicity and maximum compatibility with the broadest range of existing tooling matters most.

ERC-1155 tends to fit better when:

• A project needs many identical copies of some items (in-game currency-like items, tickets, crafting materials) alongside unique ones.
• Gas efficiency for large-scale minting or transfers is a priority, such as in NFT gaming where players accumulate large numbers of items.
• A single game or platform wants to manage many different asset types under one contract rather than deploying a new contract for every item type.

A note on gas costs

Batch operations are one of the more concrete ways NFT gas fees can be reduced at the protocol design level — a project minting 10,000 identical in-game items under ERC-1155's batch functions pays dramatically less in aggregate gas than minting the same 10,000 items as separate ERC-721 tokens one at a time. This is a major reason many gaming-focused NFT projects choose ERC-1155 over ERC-721, independent of any other design consideration.

Neither standard is inherently "better"

It's a common misconception that ERC-1155 is simply a newer, universally superior replacement for ERC-721. In practice, they solve different problems, and many major collections continue to use ERC-721 deliberately because true 1-of-1 uniqueness with maximal compatibility is exactly what they need. The right choice depends entirely on whether a project needs multiple token types and batch efficiency, or straightforward, universally recognized uniqueness.

Marketplace and tooling compatibility

Both standards enjoy broad support across major NFT marketplaces and wallets today, though ERC-721's longer history means some older or more specialized tooling was originally built with only ERC-721 in mind and had ERC-1155 support added later. When evaluating a project or platform, it's worth confirming explicitly that batch operations and semi-fungible items are properly supported if you expect to rely on those specific ERC-1155 features, rather than assuming full feature parity everywhere.

A brief note on the technical relationship between the two

ERC-1155 was designed partly in response to real usage patterns observed with ERC-721 in gaming contexts, where projects needed many different item types under a single system. Rather than requiring a separate contract deployment for every item type (which ERC-721-only designs often required), ERC-1155 consolidated this into one contract capable of tracking arbitrary numbers of token types, each with its own supply and rules — a meaningful architectural simplification for projects with complex item ecosystems, even setting aside the gas savings from batching.

Bottom line

ERC-721 remains the standard for pure, unique NFTs where simplicity and broad compatibility matter most, while ERC-1155 is generally the better fit for projects managing many token types — especially gaming items — where batch minting and gas efficiency provide a real practical advantage. Neither replaces the other; they serve different design needs. Explore more token standard fundamentals in our glossary and our broader guide to NFTs vs cryptocurrency.