Privy vs Turnkey for AI Agent Wallets: Which Should You Pick?

Short answer: pick Turnkey when verifiable key custody is the priority, because keys live and sign inside a hardware secure enclave (Intel SGX) with attestation on every request. Pick Privy when embedded-wallet developer experience and a generous free tier matter more, and note it is now part of Stripe. Both are low-level signing infrastructure with a policy engine that runs at crypto signing time. Neither is a spend-governance product, so if you need fiat cards, human approval, and a finance-grade audit trail, that layer sits above whichever one you choose.

Last updated July 2026.

What these two actually are

Privy and Turnkey solve the same core problem: give an application, or an AI agent, a wallet and a safe way to sign transactions without handing anyone a raw private key. They are wallet-as-a-service and key-management infrastructure. They are not payment products, spending-control products, or finance tools, and it matters to be precise about that before comparing them.

Both now market agent-specific features, because autonomous agents that hold funds are the fastest-growing reason to need programmable, policy-bound signing. An agent gets a wallet, the developer defines what that wallet may sign, and the provider enforces those rules whenever the agent tries to act.

Privy vs Turnkey at a glance

When to choose Privy

Reach for Privy when the developer experience of embedding a wallet is what you are optimizing for. It is built to make wallets disappear for the end user: no extension, no seed phrase, no blockchain literacy required. The free tier is unusually generous, which lowers the cost of prototyping and of running a real product at moderate scale. Being part of Stripe since 2025 also signals a payments-first roadmap, which is reassuring if you expect your agent flows to touch fiat eventually.

Its policy engine is real. You can define per-domain spend limits and agent-specific permissions that are evaluated off-chain but enforced at signing, so an action that violates the rules never executes. For a team building its own agent layer and wanting sensible guardrails at the signing boundary, that is a solid foundation.

When to choose Turnkey

Choose Turnkey when the security of the key itself is the thing you cannot compromise on. Private keys are generated and used only inside hardware-backed Trusted Execution Environments, and the policy engine runs inside that same enclave, so the rules are enforced in the same protected space that holds the key. Every signing request comes with cryptographic attestation that the enclave is intact. For teams with a security or compliance function that will ask "where exactly does the key live and who could ever touch it," Turnkey has the cleanest answer.

Sub-100ms signing and delegated agent access make it practical for high-frequency agent workflows. If you are building infrastructure yourself and want the strongest custody story with policy at the signing layer, Turnkey is one of the strongest options on the market.

The comparison that actually decides most projects

Here is the part teams miss when they frame this as Privy versus Turnkey. Both answer the question "can this key safely sign this transaction." Neither answers "should this agent spend this money, on which rail, with whose approval, and how do we prove it later to finance." Those are different questions, and the second one is usually the one a business actually loses sleep over.

Concretely, low-level signing infrastructure does not give you fiat virtual card issuing, so an agent that needs to buy from an ordinary merchant on a card is out of scope. It does not route an approval to a human in Slack or email when an agent tries to spend above a threshold. And on-chain history plus your own logs is not the same as an immutable, agent-attributed audit trail that ties every dollar back to the agent, the human who owns it, and the policy that permitted it. When your controller asks who authorized a 4,000 dollar spend last month, a block explorer will not answer.

This is why we treat this comparison as complementary rather than either-or. A control plane can sit above signing infrastructure: you keep Privy or Turnkey for custody and signing, and add governance on top. We lay out that split on our Privy alternative and Turnkey alternative pages.

What a governance layer adds on top

Whichever signer you pick, the governance layer is where the money questions get answered. It checks every agent request against policy (amount, counterparty, velocity, remaining budget) before anything moves, using spend controls that live outside the code the agent can influence. Anything above your threshold pauses for human approval instead of silently going through. It can issue scoped, single-use fiat virtual cards so agents buy from real merchants, not just on-chain. And it writes an immutable audit trail a finance team can sign off on. Being rail-neutral, it does this across whatever issuer, cards, or crypto you already use.

If you are the kind of team weighing Privy against Turnkey, you are almost certainly building your own agent stack, which means you will also want an AI coding assistant that can plan and ship the integration without you hand-writing every wire-up. The wallet is one component. The governance is another. Do not conflate them.

Common questions

Is Privy better than Turnkey?

Neither is strictly better; they optimize for different things. Privy leads on embedded-wallet developer experience and a generous free tier and is now backed by Stripe. Turnkey leads on verifiable key custody, with keys and policy inside a hardware enclave. Match the choice to whether developer velocity or custody assurance is your binding constraint.

Do Privy and Turnkey issue virtual cards?

No. Both are crypto key-management and signing infrastructure, not fiat card issuers. If your agents need scoped virtual cards to buy from ordinary merchants, that comes from a payments or control-plane layer, not from the signer.

Can you use Privy or Turnkey with a spend-governance layer?

Yes, and that is often the right architecture. Keep the signer for custody and add a rail-neutral control plane above it for policy, human approval, virtual cards, and an attributed audit trail. The two layers do different jobs and compose cleanly.

Which is more secure, Privy or Turnkey?

Turnkey makes the stronger custody claim: keys never leave a hardware secure enclave and every signing request carries attestation. Privy provides secure key management with a strong track record too. If your threat model centers on where the key physically lives, Turnkey's enclave model is the more conservative choice.

The takeaway

Privy and Turnkey are both good, and the choice between them is real but narrow: developer experience and free tier versus enclave-grade custody. The bigger decision is the one this framing hides. A signer keeps the key safe; it does not govern what your agents spend. Decide the wallet, then decide the governance layer on top, and do not assume the first choice covers the second. See the full split on the Privy comparison, or read the best agent payment platforms for the wider landscape.