thirdweb's free tier includes 1,000 user wallets, 1,000 sponsored transactions and 1M RPC requests; its Growth plan is $99 a month. Web3 SDKs range from all-in-one kits like thirdweb to single-job tools for login, data or wallet connection. This list ranks eight by coverage, free tier and entry price.
Quick answer
thirdweb is the best all-in-one web3 SDK: wallets, gas sponsorship, RPC and contracts in one kit with a free tier of 1,000 wallets. Use Privy or Dynamic if you only need login and embedded wallets, and Alchemy if RPC and data APIs matter most.
- 01thirdweb: Best all-in-one SDK
- 02Alchemy: best for RPC and data
- 03Privy: best for embedded login
- 04Dynamic: best for external wallets
- 05MetaMask Embedded Wallets: Cheapest paid wallet tier
The 8 best web3 sdks
thirdweb bundles user and server wallets, gas sponsorship, RPC, a bridge and indexed data. The free tier includes 1,000 user wallets and 1M RPC requests; Growth is $99 a month.
- Chains
- EVM networks
- Platforms
- Web, API, SDK
- Pricing
- Growth $99/mo; Scale $499/mo; Pro from $1,499/mo
- Free plan
- 1,000 user wallets, 1,000 sponsored transactions, 1M RPC requests, 1 GB storage
- Chains
- 2,500+ for RPC and server wallets; 145+ for gas sponsorship
Pros
- Free tier includes 1,000 user wallets, 1,000 sponsored transactions and 1M RPC requests
- One SDK covers wallets, contracts, RPC and payments
- RPC and server wallets listed for 2,500+ chains
Cons
- Gas sponsorship covers 145+ chains, far fewer than its RPC coverage
- Pro plan starts at $1,499/mo
Skip it if you need gas sponsorship on a niche chain: it covers 145+ chains, fewer than its RPC coverage.
Alchemy's SDKs sit on its RPC and data APIs for 100+ blockchains, with 30M free compute units a month.
- Chains
- Ethereum, EVM networks and Solana
- Platforms
- Web, API
- Pricing
- Pay as You Go: $0.525 per 1M compute units
- Free plan
- 30M compute units per month, 25 requests per second, 5 apps
- Chains
- 100+ blockchains
Pros
- Free tier includes 30M compute units per month at 25 requests per second
- Pay as You Go starts at 300 requests per second with 30 apps
- Covers 100+ blockchains, with all mainnets and testnets on the free plan
Cons
- Usage is billed in compute units and each method has a different cost, so bills are harder to predict
- Free tier is limited to 5 apps and 5 webhooks
- Signed SLAs are only on the Enterprise plan
Skip it if you want login and embedded wallets out of the box without extra setup.
Privy, owned by Stripe, adds login and embedded wallets. The free plan covers up to 500 monthly active users; Core is $299 a month.
- Chains
- EVM and Solana
- Platforms
- Web, iOS, Android, API
- Pricing
- Core $299/month (500 to 2,499 MAU); Scale $499/month (2,500 to 9,999 MAU)
- Free plan
- Up to 500 MAU, 50K signatures and $1M volume per month
- Company
- Stripe (acquisition announced June 11, 2025)
Pros
- Free plan covers up to 500 MAU, 50K signatures and $1M transaction volume per month
- Wallet connectors for EVM and Solana
- Login by email, SMS, social accounts and passkeys
Cons
- Paid plans start at $299 per month for up to 2,500 MAU
- Webhooks, SSO and dedicated support need an Enterprise contract
- Owned by Stripe since 2025, so the roadmap depends on a payments company
Skip it if you expect more than 500 MAUs on a small budget: the next plan costs $299 a month.
#4D
Best for external wallets
Dynamic combines login, embedded wallets and connections to 800+ external wallets. It is free up to 1,000 MAUs and was acquired by Fireblocks in October 2025.
- Chains
- Multichain
- Platforms
- Web, SDK
- Free plan
- Up to 1,000 monthly active users
- Pricing
- $249/mo for 1,000 to 5,000 MAUs; $0.05 per MAU above 5,000; Enterprise custom
- Company
- Fireblocks (acquired October 2025)
Pros
- Free up to 1,000 monthly active users
- Connects 800+ external wallets alongside embedded wallets
- Owned by Fireblocks since October 2025
Cons
- Paid tier jumps to $249/mo above 1,000 MAUs
- Each MAU above 5,000 adds $0.05
Skip it if you pass 1,000 MAUs on a tight budget: the next tier costs $249 a month.
#5M
Cheapest paid wallet tier
Web3Auth, now part of Consensys, is free for 1,000 monthly active wallets. Growth costs $69 a month for 3,000.
- Chains
- EVM chains, Solana and Bitcoin
- Platforms
- Web, iOS, Android, SDK
- Custody
- Non-custodial
- Pricing
- Base free; Growth $69/month; Scale $399/month; Enterprise custom. Extra monthly active wallets $0.050 to $0.040 each
- Free plan
- Base plan: 1,000 monthly active wallets free, then $0.050 per additional wallet
Pros
- Free Base plan includes 1,000 monthly active wallets
- Chain-agnostic: EVM networks, Solana and Bitcoin
- Web SDK source is public on GitHub
Cons
- Whitelabeled login UI starts at the $69/month Growth plan
- MPC TSS for web and mobile is Enterprise-only
- Farcaster login is deprecated in the current SDK
Skip it if you need features beyond social login and embedded wallets, such as RPC or data.
#6W
Best for wallet connection
WalletConnect links apps to 700+ wallets across EVM, Solana and Bitcoin. Reown's Starter plan is free for 500 MAUs; Pro costs $890 a year.
- Chains
- EVM chains, Solana, Bitcoin, Cosmos, Polkadot and more
- Platforms
- SDK, Web, iOS, Android
- Launched
- 2018
- Token
- WCT
- Pricing
- Starter $0 (500 MAUs); Pro $890 per year
Pros
- Chain agnostic: EVM, Solana, Bitcoin, Cosmos, Polkadot
- Reown Starter plan is $0 with 500 MAUs
- Supported by 700+ wallets
Cons
- Reown Pro plan costs $890 per year
- Two brands (WalletConnect and Reown) can confuse builders
- Network is permissioned, per its own docs
Skip it if your users do not have a wallet yet: pair it with an embedded wallet SDK.
#7C
Best for payments and ramps
Crossmint offers embedded wallets, stablecoin on-ramps and off-ramps, payouts and token checkout across 50+ blockchains. 1,000 monthly active wallets are free.
- Platforms
- Web, API, SDK
- Free plan
- 1,000 monthly active wallets, up to 2,000 transactions
- Pricing
- Wallets from $0.02 per monthly active wallet; tokenization from $0.01 per action; ramp fees per transaction, not published
- Chains
- 50+ blockchains
Pros
- 1,000 monthly active wallets free
- Offers both custodial and non-custodial wallets
- Tokenization priced from $0.01 per action
Cons
- On-ramp and off-ramp fees are not published
- Gas sponsorship on the developer plan is capped at $50
- Developer tokenization rate limit is 100 per hour
Skip it if you need published ramp fees: Crossmint does not list them.
Moralis covers Wallet, Token, NFT, Price, DeFi and Streams APIs across EVM, Solana and Bitcoin.
- Chains
- EVM networks, Solana and Bitcoin
- Platforms
- Web, API
- Pricing
- Starter $149/mo, Pro $249/mo, Business $749/mo (billed annually); Enterprise custom
- Free plan
- No free plan listed
- Chains
- 30+ chains (EVM, Solana, Bitcoin)
Pros
- Wallet, Token, NFT, Price, DeFi and Streams APIs on every plan
- Covers EVM chains, Solana and Bitcoin in one API
- Business plan removes the attribution requirement
Cons
- No free plan on the pricing page
- Starter at $149/mo (billed annually) is a high entry price for a data API
- Attribution required below the Business plan
Skip it if you are prototyping for free: Moralis lists no free plan and starts at $149 a month billed annually.
Web3 SDKs compared
Select a name to jump to its review.
| Name | Best for | Pricing | Free plan | Chains |
|---|
| thirdweb | Wallets, RPC and contracts | Growth $99/mo; Scale $499/mo; Pro from $1,499/mo | 1,000 user wallets, 1,000 sponsored transactions, 1M RPC requests, 1 GB storage | EVM networks |
|---|
| Alchemy | Node access plus data APIs | Pay as You Go: $0.525 per 1M compute units | 30M compute units per month, 25 requests per second, 5 apps | Ethereum, EVM networks and Solana |
|---|
| Privy | Consumer apps with email login | Core $299/month (500 to 2,499 MAU); Scale $499/month (2,500 to 9,999 MAU) | Up to 500 MAU, 50K signatures and $1M volume per month | EVM and Solana |
|---|
| Dynamic | Apps with many wallet users | $249/mo for 1,000 to 5,000 MAUs; $0.05 per MAU above 5,000; Enterprise custom | Up to 1,000 monthly active users | Multichain |
|---|
| MetaMask Embedded Wallets | Social login on a budget | Base free; Growth $69/month; Scale $399/month; Enterprise custom. Extra monthly active wallets $0.050 to $0.040 each | Base plan: 1,000 monthly active wallets free, then $0.050 per additional wallet | EVM chains, Solana and Bitcoin |
|---|
| WalletConnect | Connecting existing wallets | Starter $0 (500 MAUs); Pro $890 per year | Starter: 1 project, 500 MAUs, 2.5M RPC calls | EVM chains, Solana, Bitcoin, Cosmos, Polkadot and more |
|---|
| Crossmint | Stablecoin and checkout flows | Wallets from $0.02 per monthly active wallet; tokenization from $0.01 per action; ramp fees per transaction, not published | 1,000 monthly active wallets, up to 2,000 transactions | 50+ blockchains |
|---|
| Moralis | Token, NFT and wallet data | Starter $149/mo, Pro $249/mo, Business $749/mo (billed annually); Enterprise custom | No free plan listed | EVM networks, Solana and Bitcoin |
|---|
“Not verified” means we could not confirm the value on the project’s own pages.
How we rank web3 sdks
- 01Coverage: wallets, login, RPC, data or payments.
- 02Free tier: published free allowance.
- 03Entry price: first paid plan on the pricing page.
- 04Chains: chains listed by the provider.
- 05Ownership: who stands behind the SDK, from its own page.
No project paid to be listed or ranked. Full rules: methodology.
How to choose
Decide what the SDK must own
If you want one vendor, thirdweb covers wallets, RPC and contracts. If you already have RPC, a login SDK such as Privy, Dynamic or Web3Auth is enough.
Price by monthly active users
Login SDKs bill by MAU: free up to 500 on Privy, 1,000 on Dynamic and Web3Auth. Model your user count at launch and six months later.
Keep external wallets working
WalletConnect or Dynamic lets users who already have MetaMask or Phantom sign in without a new wallet.
Check ownership changes
Privy is owned by Stripe, Dynamic by Fireblocks and Web3Auth by Consensys. Ownership affects roadmap and pricing.
Who should skip all of these
- Smart contract authors looking for a compiler and test framework: see our smart contract tools list.
- Apps that only need a single RPC endpoint: an RPC provider is simpler.
Bottom line
Start with thirdweb if you want one kit; pick Privy, Dynamic or Web3Auth if login is the only gap.
Add WalletConnect whichever you choose, so users with existing wallets can connect.
Educational content, not financial advice. Crypto assets are volatile; do your own research.
FAQ
What is the most complete web3 SDK?
±
thirdweb covers the most jobs in one kit: user and server wallets, gas sponsorship, RPC, a bridge and indexed data.
Which wallet login SDK is cheapest?
±
Web3Auth's paid Growth plan is $69 a month for 3,000 monthly active wallets. Dynamic's next tier is $249 and Privy's is $299.
Do I still need WalletConnect with an embedded wallet?
±
Yes if some users already have wallets such as MetaMask or Phantom. Embedded wallets serve new users; WalletConnect serves existing ones.
Who owns Privy, Dynamic and Web3Auth?
±
Stripe announced its Privy acquisition on June 11, 2025. Fireblocks acquired Dynamic in October 2025. Web3Auth was acquired by Consensys.
What changed in this list
2026-09-26First version: 8 web3 SDKs, free tiers and entry prices checked on each provider's page.