AI models, paid in crypto.
No subscription. No card needed. No account needed.
NanoGPT gives you pay-per-use access to 1,000+ models — ChatGPT, Claude, Gemini, Llama and more — with deposits starting at $0.10 in crypto (plus a 3% bonus on every crypto top-up). And via the x402 protocol, the API itself can quote and accept a per-request payment: machine-native money for machine-native traffic.
Try it — 5% off with this linkWhy this niche exists
Cards don't fit everyone
Plenty of developers worldwide have crypto but no international credit card, or don't want card chargebacks and KYC for a $5 API top-up.
Agents pay, not people
Autonomous agents need per-request payments without a human pre-funding a subscription. x402 (HTTP 402 "Payment Required") was built for exactly that.
Subscriptions waste money
Light users pay $20/month for what they'd use $3 of. Pay-as-you-go with a $0.10 floor kills that mismatch.
How the x402 flow works
402 Payment Required with a signed quote for that exact request.X-PAYMENT header); you get the model response.# unauthenticated request with the x402 header → live 402 quote instead of "missing API key"
curl -i https://api.nano-gpt.com/api/v1/chat/completions \
-H "x-x402: true" -d '{...}' # → HTTP 402 + signed payment quote
# pay the quote on-chain (Nano / Base USDC / Solana USDC / Lightning L402),
# replay with X-PAYMENT → 200 with your completion (X-PAYMENT-RESPONSE settles it)
Questions people actually ask
Do I need an account?
Not for the x402 per-request flow — that's the point. For regular usage you can create one, deposit $0.10+ in crypto, and use any model.
Which crypto is supported?
Deposit rails include Monero, Bitcoin + Lightning, Nano (instant, feeless — the service's namesake), USDT, USDC, Litecoin, Bitcoin Cash, Dash, Zcash, ETH, SOL, TON and more — every crypto top-up is credited with a 3% bonus. For accountless x402 calls, the per-request rails are Nano, Base USDC, Solana USDC, and Lightning L402 (which currently gets a 10% discount). Check nano-gpt.com/pricing and the x402 docs for the live list.
Is this an ad?
Full disclosure: the link on this page is a referral link. It gives you 5% off eligible usage, and it pays the author a 10% commission on usage — it costs you nothing extra. Everything above is verifiable on the official site.
Why trust it?
Verify, don't trust: models and prices are listed publicly, chats stay on your device, and the x402 docs are public at docs.nano-gpt.com.
Ready to try it?
$0.10 is enough to make your first calls. Referral link gives you 5% off.
Open NanoGPT →