How to Buy Claude API Credits

Buying Claude API credits is the first step toward using Claude programmatically — whether you are building applications, running Claude Code, or powering agentic workflows. This guide walks through the complete purchasing process on AI Prime Tech Unlimited, from account creation through payment to generating your first API key.

Step 1 — Create Your Account

Go to unlimited.aiprimetech.io and click Register. Enter your email address and create a password. You will receive a confirmation email — click the link to activate your account. Once confirmed, log in to access the dashboard where you manage credits, keys, and subscriptions.

The account is free to create and has no monthly fee. You only pay when you add credits or purchase a plan. The dashboard shows your current balance, usage history, active API keys, and subscription status all in one place.

If you are buying access for a team, each developer should create their own account. This gives independent API keys, separate balance tracking, and per-user rate limits. There is no team or organization layer — each account operates independently with its own credentials and billing.

Step 2 — Add Balance (Pay-As-You-Go Credits)

From the dashboard, navigate to Add Balance or Top Up. You can add any amount starting from $5. The credit is prepaid — you pay upfront and usage deducts from your balance in real time. When the balance reaches $0, API requests return an insufficient-balance error until you top up again.

Payment methods include credit and debit cards (Visa, Mastercard, processed through standard payment gateways) and cryptocurrency (BTC, ETH, USDT on common networks). Card payments are instant. Crypto payments confirm after the required number of blockchain confirmations — typically 1-3 minutes for USDT on Tron or Polygon, longer for BTC depending on network congestion.

Credits never expire. If you add $50 and use $20 this month, the remaining $30 carries forward indefinitely. There are no monthly minimums, no use-it-or-lose-it policies, and no automatic recurring charges on the pay-as-you-go model. You control exactly when and how much you add.

Step 4 — Generate an API Key

With balance added, go to the API Keys section of the dashboard and click Generate New Key. Name it something descriptive (e.g., 'laptop-dev', 'ci-pipeline', 'cursor-ide'). The key is shown once — copy it immediately and store it securely. If you lose it, revoke the old key and generate a new one.

The key works with both the Anthropic Messages API endpoint and the OpenAI-compatible Chat Completions endpoint. For Claude Code, set it as ANTHROPIC_API_KEY. For Cursor or other OpenAI-compatible tools, use it as the API key with the /v1 base URL. One key works everywhere — you do not need separate keys for different endpoints or tools.

You can generate multiple keys per account. Each key shares the same balance and subscription, but having separate keys lets you track which tool or environment is consuming credits (visible in usage logs) and revoke access to a specific tool without disrupting others.

When to Choose Unlimited Instead of Credits

Prepaid credits work well when your usage is light, occasional, or unpredictable in timing (not volume). You pay only for what you use, and there is no commitment. This is ideal for weekend projects, occasional Claude Code sessions, testing integrations, or low-traffic production APIs where per-token cost is genuinely low.

An unlimited plan makes more sense when you use Claude Code daily, run subagents or agent teams, work with large codebases, or simply want predictable costs without monitoring a balance. The 1-day plan ($9) is good for intensive single-day sprints. The 1-week plan ($39) covers a full work week of unlimited access to all Claude models without per-token billing.

The decision framework is simple: estimate your weekly API spend on pay-as-you-go. If it consistently exceeds $39, the weekly unlimited plan saves money and removes the mental overhead of cost monitoring. If your spend varies between $5 and $30 per week, pay-as-you-go with occasional credits may be more economical.

Payment Methods Explained

Card payments (Visa, Mastercard) process instantly and are the simplest option for most developers. The payment page uses standard secure checkout. There are no recurring charges unless you explicitly enable auto-top-up or purchase a recurring subscription. International cards are accepted — the gateway serves developers worldwide.

Cryptocurrency payments are available for developers who prefer them — whether for privacy, because card payments are difficult in their region, or because they hold crypto and prefer to spend it. Supported options typically include BTC (Bitcoin mainnet), ETH (Ethereum mainnet), and USDT (on Tron TRC-20 or Polygon for lower fees). The exact networks available are shown at checkout.

Both payment methods result in the same account credit. There is no difference in service, rate limits, or features between card-funded and crypto-funded accounts. Choose whichever is more convenient for your situation. For recurring unlimited plans, card payment with auto-renewal is usually simplest; for one-time credit top-ups, either works equally well.

# After buying credits and generating a key:

# 1. Set environment variables
export ANTHROPIC_BASE_URL="https://aiprimetech.io"
export ANTHROPIC_API_KEY="your-key-from-dashboard"

# 2. Test with curl
curl -X POST https://aiprimetech.io/v1/messages \
  -H "x-api-key: $ANTHROPIC_API_KEY" \
  -H "content-type: application/json" \
  -H "anthropic-version: 2023-06-01" \
  -d '{
    "model": "claude-sonnet-4-5",
    "max_tokens": 256,
    "messages": [{"role": "user", "content": "Hello Claude"}]
  }'

# 3. Or use directly with Claude Code:
# $ claude

Frequently asked questions

Can I buy Claude API access with Bitcoin or crypto?
Yes. The gateway accepts BTC, ETH, and USDT for both credit top-ups and unlimited plan purchases. Crypto payments confirm after blockchain verification (1-3 minutes for USDT, longer for BTC). The service is identical regardless of payment method.

What is the minimum purchase amount?
The minimum top-up is $5. There is no monthly minimum or commitment on pay-as-you-go. Credits never expire and carry forward until used. The smallest plan option is the 1-day unlimited plan at $9.

Do credits expire?
No. Prepaid credits remain in your account indefinitely until consumed by API usage. There are no monthly deductions, expiration dates, or use-it-or-lose-it policies on the pay-as-you-go balance.

AI Prime Tech is an independent API gateway. It is not affiliated with, endorsed by, or a reseller of Anthropic. Claude and related model names are trademarks of their respective owners.