What you are buying
Documented
thirdweb
Platform plus in-app wallets.
Crossmint
Smart wallets, with onramps and checkout as neighboring products.
thirdweb vs Crossmint
An in-app wallet on a developer platform, next to a smart wallet aimed at consumer and fintech apps. Funding with a card is a different flow.
The flows
thirdweb
01Connect Button or Connect Embed
thirdweb lab entry. The host control opens the vendor’s default UI.
02Auth method list
thirdweb default UI on the email method. No code has been sent.
03Verification
thirdweb one-time code screen. The code was not submitted.
No screenshot
04In-app wallet
Docs say the wallet is created from the verified identity and does not ask the user to confirm a transaction just to exist.
thirdweb sends a real email code. There is no documented sandbox OTP, so this run stops at the code screen and does not read an inbox. This client allows localhost:3000. Add www.kycflows.com and kycflows.com to its allowed domains.
No screenshot
05Optional funding or gasless prompt
Buy, bridge, and account-abstraction prompts are separate widgets. They are not part of the login unless the app adds them.
Crossmint
No screenshot
01Auth entry
Either Crossmint’s auth UI or a headless form the app designed. We will capture the stock UI first.
NEXT_PUBLIC_CROSSMINT_CLIENT_KEY is not set. The staging project is named KYC Flows. Add that public client key locally and on Vercel, then run npm run capture again.
No screenshot
02Method
Email, SMS, social, or an external wallet, depending on configuration. Passkey may be the signer rather than the first screen.
No screenshot
03Session
A code, a magic link, or an OAuth return. Session cookies are documented for server-rendered apps.
No screenshot
04Smart wallet
Docs say a wallet can be created when the user authenticates, or pregenerated before they arrive. We have not seen the user-facing difference.
No screenshot
05Funding, out of scope
Card, Apple Pay, and Google Pay sit on the onramp, not in the login. This frame stays pending, and a later capture will be labeled as onramp, not as KYC and not as login.
thirdweb’s in-app wallet sits inside a toolkit for contracts, RPC, and account abstraction. Crossmint’s embedded wallet is a smart-contract wallet addressed by email, phone, or user id, with gas sponsorship invoiced in fiat and a card onramp nearby. Both will create a wallet for someone who does not have one. They are not aimed at the same next screen.
Crossmint also sells checkout and custodial treasury wallets. Those are out of scope here. So is any identity check a card payment triggers. Didit is the only KYC profile on this site. A fair capture of Crossmint is the auth UI through to a smart-wallet address, with the onramp labeled as a separate product if we record it later.
Both publish a free allowance of 1,000 active wallets a month. thirdweb then charges from $0.015 per MAU and also sells platform plans from $99. Crossmint’s headline overage starts at $0.025, with a custom table that mentions about $0.02. thirdweb talks about enclaves. Crossmint talks about onchain signers and recovery. We have not watched either one.
The table
Pending rows are the ones a capture will fill. They match on purpose.
Sign-in, as documented
Documentedthirdweb
Email, phone, passkey, social, guest mode, external wallets, custom auth.
Crossmint
Email including Gmail SSO, SMS, social including X and Farcaster, passkeys, external wallets, your own auth.
Wallet architecture, in their words
Documentedthirdweb
In-app wallet scoped to a client ID. Enclave recovery.
Crossmint
Per-user smart contract. Passkey, device, or email as signer.
Card funding
Documentedthirdweb
A buy widget exists. It is not the login.
Crossmint
Onramp is a separate, per-transaction product. Not this capture.
Pricing shape
Documentedthirdweb
1,000 MAU free, then from $0.015, plus a platform plan.
Crossmint
1,000 monthly active wallets free, overages from $0.025.
Steps to a wallet
Pendingthirdweb
Pending first capture
Crossmint
Pending first capture
Fields the user fills
Pendingthirdweb
Pending first capture
Crossmint
Pending first capture
Time to first wallet
Pendingthirdweb
Pending first capture
Crossmint
Pending first capture
Last captured
Documentedthirdweb
Oct 20, 2026 · 3 of 5 frames
Crossmint
Not yet captured
Crossmint’s onramp fees are not in the wallet number. thirdweb’s SMS fees are not in the MAU number. Leave them out of a login comparison until a capture includes them on purpose.
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