Is this the real Claude API?

Yes. Your requests are processed by the same Claude models (Opus 4.7, Sonnet 4.6, Haiku 4.5) with the same context windows and capabilities. The only difference is the price.

How do I switch from the official API?

Just change the base URL and API key — it's a one-line change in your code. Works with Claude Code too; full setup steps are in our docs.

What payment methods do you accept?

We accept cryptocurrency — USDT (TRC20/ERC20), BTC, ETH, and 100+ other coins via Oxapay. Credits never expire.

Are there rate limits?

There are no fixed per-account caps. Throughput depends on system load, upstream provider availability, and the model in use — newer models often have tighter caps than older ones.

Do you store my prompts or data?

No. We don't log, store, or train on your API requests. Zero data retention policy on request content.

24/7 support via email at support@claudeapi.cheap. Pro users get priority response.

For developers in Vietnam · Updated 2026-05

Claude API in Vietnam

Pay in USDT or BTC. No 10% VAT. No 2-4% forex. No MoMo/ZaloPay refused on US SaaS checkout.

Get a key in 30 seconds Crypto setup walkthrough →

Why direct Anthropic struggles in Vietnam

1.Direct Anthropic at $20/month works out to roughly ₫560,000-₫580,000 after 10% VAT + 2-4% bank forex + the bank's USD-conversion spread
2.MoMo, ZaloPay, VNPay — the e-wallets most Vietnamese developers use daily — are not supported by US SaaS billing
3.Visa Debit issued by Vietnamese banks often fails 3DS verification on cross-border USD charges
4.Pro plan at $19 USDT (lifetime) is approximately ₫495,000 once, no recurring VAT or forex bleed

What you actually pay

Plan

Headline

Real cost in VND

Anthropic Pro (monthly)

$20/mo

₫589,160/mo

ClaudeAPI.cheap Pro (lifetime, one-time)

$19 once

₫494,000 once

Local-currency real cost includes 10% VAT + ~2-4% forex on every USD card charge. Pro plan is paid once in USDT — no recurring tax/forex trigger.

Per-model rates on the Pro plan

Model

Input / 1M

Output / 1M

Claude Opus 4.7

Claude Sonnet 4.6

$0.6

Claude Haiku 4.5

$0.2

80% off official Anthropic list, paid against your USDT balance. No recurring forex or VAT per API call. GPT-5 and Gemini 3 on the same key — full pricing.

Setup from Vietnam

Sign up at claudeapi.cheap/signup — email or Google, no card, no phone, no KYC.
Buy USDT in VND on Binance P2P, Bybit P2P, or your local exchange of choice. TRC-20 is the cheapest network (~$0.05 fee).
Top up your balance from the dashboard. Send USDT from your wallet — credits land in 1-2 minutes.
Create a key (sk-cc-…) from dashboard → Keys → Create.
Drop in — two env vars and your existing Anthropic SDK works unchanged:

export ANTHROPIC_API_KEY="sk-cc-your-key-here"
export ANTHROPIC_BASE_URL="https://claudeapi.cheap/api/proxy"

# Now your existing Anthropic SDK, Claude Code,
# Cline, Aider, OpenClaw, Cursor — all work at 80% off.

Local-payment-method to USDT walkthrough for Vietnam developers: Pay for Claude API with crypto.

FAQ — Vietnam specific

Can I top up with MoMo or VNPay?

Not directly to ClaudeAPI.cheap or Anthropic — neither accepts Vietnamese e-wallets. The Vietnamese developer workflow is: MoMo/VNPay/bank → buy USDT on Binance P2P or Remitano with VND → withdraw USDT to ClaudeAPI.cheap. Takes 5-10 minutes the first time.

Will my Vietnamese debit card work for direct Anthropic?

Visa/Mastercard debit issued by Vietcombank, Techcombank, ACB and similar major banks sometimes work, sometimes refuse 3DS on cross-border USD charges. ATM domestic-only cards are reliably refused. Crypto bypasses the entire problem.

Is using crypto for this legal in Vietnam?

Holding and using crypto for digital service payments is legal in Vietnam as of mid-2026, though crypto isn't officially recognized as currency. Many Vietnamese developers and freelancers use this exact workflow for SaaS subscriptions and API payments. Talk to a local tax advisor for your specific case.

What's the cheapest crypto path from VND?

Binance P2P or Remitano with VND → USDT (TRC-20) → ClaudeAPI.cheap. Spot rates are close to mid-market. TRC-20 network fee ~$0.05. Total cost overhead vs nominal USD price: under 1% in most cases.

Skip the VAT + forex toll.

30 seconds to a working key. Top up with USDT when ready — or never, if Basic-tier usage is enough.

Get a free API key