What is Zama?
Confidential smart contracts with fully homomorphic encryption.
Who is Zama best for?
Zama is best for Solidity developers who need balances and amounts kept encrypted on public chains.
Solidity developers
Confidential contracts are written in Solidity with the FHEVM library, so no cryptography background or new language is needed.
Confidential payments and payroll
Salaries, invoices and transfers settle on a public chain while balances and amounts stay encrypted.
Tokenizing real-world assets
Funds and other assets can go onchain without exposing investor identities, deal terms or cap tables, while compliance checks run inside the contract.
Research and prototypes
Its open-source libraries, including TFHE-rs and Concrete ML, are free for research, personal projects and non-commercial work.
How much does Zama cost?
Zama is free to build and test on, and live apps pay small protocol fees per operation: up to $0.10 per decryption, $0.50 per encrypted input check and $1 per value bridged between chains, with monthly plans cutting fees by up to 99%.
- No charge for the encrypted computation itself
- Testnet relayer works without an API key
- Libraries free for non-commercial use and prototyping
- Down to $0.001 on a monthly plan
- Charged when an app reveals an encrypted value
- Down to $0.005 on a monthly plan
- Charged when a transaction carries encrypted inputs
- For values moved between chains
- Down to $0.01 on a monthly plan
These are the protocol's starting fees, which its operators can change. Fees are priced in US dollars but paid in $ZAMA tokens, and the user, the app or a relayer can pay them. Monthly plans cut fees by up to 99% against pay as you go, but their prices are not listed. A confidential token transfer (one input check and three decryptions) costs $0.008 to $0.80 depending on the discount. Zama's hosted mainnet relayer needs an API key you apply for, with usage billed monthly. Commercial use of Zama's libraries outside the protocol needs an enterprise license, priced on request. Full pricing on docs.zama.org. We checked these prices on .
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Questions about Zama
What is Zama?
Confidential smart contracts with fully homomorphic encryption.
Who is Zama for?
Zama is best for Solidity developers who need balances and amounts kept encrypted on public chains.
Is Zama free for commercial use?
Not always. Zama's code is free for non-commercial use, prototyping, research and personal projects. Commercial apps built on the Zama Protocol need no extra license but pay protocol fees per operation, while commercial use of Zama's libraries outside the protocol needs an enterprise license.
How much does Zama cost?
Zama's paid plans are Decryption at $0.10 per decryption, Input verification at $0.50 per encrypted input check and Bridging at $1 per encrypted value.
Where can I try Zama?
On its official website, zama.org.
Do users need $ZAMA tokens to use a Zama app?
No. Zama Protocol fees are paid in $ZAMA tokens but priced in US dollars, and the app or a relayer can pay them on the user's behalf. That lets developers ship confidential apps whose users never hold $ZAMA themselves.
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