Simple, transparent pricing
Start free. Pay only for what you use. Credits never expire.
Free
$0
3 calls/day · no credit card
- 3 API calls per day
- Basic AI tools (ask, summarize, translate)
- 15 frontier models
- No API key needed
- MCP & REST access
- Premium tools (research, scraping)
- Priority support
Starter
$1 prepaid
~160 calls · $0.006/call
- ~160 prepaid API calls
- All 250 tools unlocked
- 15 frontier models
- Personal API key
- MCP & REST access
- Priority support
- Higher rate limits
Most Popular
Pro
$5 prepaid
~830 calls · $0.006/call
- ~830 prepaid API calls
- All 250 tools unlocked
- 15 frontier models
- Personal API key
- MCP & REST access
- Priority support
- 600 req/min rate limit
Best Value
Team
$20 prepaid
~3,300 calls · $0.006/call · bulk discount
- ~3,300 prepaid API calls
- All 250 tools unlocked
- 15 frontier models
- Personal API key
- MCP & REST access
- Premium support
- 600 req/min rate limit
// Feature Comparison
| Feature | Free | Starter ($1) | Pro ($5) | Team ($20) |
|---|---|---|---|---|
| API calls | 3/day | ~160 prepaid | ~830 prepaid | ~3,300 prepaid |
| AI tools available | Basic set | All 250 | All 250 | All 250 |
| Models (Claude, GPT-4o, Gemini, etc.) | 15 models | 15 models | 15 models | 15 models |
| MCP & REST access | ✓ | ✓ | ✓ | ✓ |
| Agent builder | — | ✓ | ✓ | ✓ |
| Memory & context | — | ✓ | ✓ | ✓ |
| Rate limit | 60/min | 120/min | 600/min | 600/min |
| Support | Community | Community | Priority | Premium |
| Cost per call | Free | $0.006 | $0.006 | $0.006 |
| Credits expire? | N/A | Never | Never | Never |
Paid tiers use prepaid credits, not daily limits. Call counts are approximate — actual usage varies by tool (see per-tool pricing below).
// Per-Tool Pricing
| Tool | Cost / Call | Calls per $1 | Category |
|---|---|---|---|
| sentiment | $0.01 | 100 | Analysis |
| summarize | $0.02 | 50 | Writing |
| translate | $0.02 | 50 | Writing |
| scrape (any site) | $0.03 | 33 | Data |
| code | $0.05 | 20 | Dev |
| research | $0.15 | 6 | Premium |
| ask / chat | $0.004 | 250 | General |
| classify / keywords | $0.006 | 166 | Analysis |
Most tools cost $0.004–$0.02 per call. Premium tools (research, vision, scraping) cost more because they use multiple model calls or external APIs.
// vs Direct API Costs — 5-10x Cheaper
| Task | AiPayGen Cost | Direct API Cost | Savings |
|---|---|---|---|
| Summarize a document (~1K tokens) | $0.02 | $0.10–$0.15 | 5–7x cheaper |
| Sentiment analysis | $0.01 | $0.05–$0.08 | 5–8x cheaper |
| Code generation | $0.05 | $0.30–$0.50 | 6–10x cheaper |
| Translation | $0.02 | $0.10–$0.15 | 5–7x cheaper |
| Deep research (multi-source) | $0.15 | $1.00–$2.00 | 7–13x cheaper |
| Web scrape + extract | $0.03 | $0.15–$0.30 | 5–10x cheaper |
Direct API costs include OpenAI GPT-4o, Anthropic Claude, or Google Gemini at standard per-token rates for equivalent tasks. AiPayGen batches, caches, and routes to the most cost-effective model automatically.
// AiPayGen vs Alternatives
| Feature | AiPayGen | OpenRouter | BlockRun |
|---|---|---|---|
| Tools available | 250 tools | 0 (models only) | 600+ |
| Pay-per-use | Yes ($0.006/call) | Yes (per token) | Monthly plans |
| MCP support | Native | No | No |
| Free tier | 3 calls/day | No | No |
| Tool chaining | Yes ($prev.result) | No | No |
| Crypto payments | x402 USDC | No | Crypto |
| Minimum purchase | $1 | Varies | $20/mo |
| Agent memory | Built-in | No | No |
| Credits expire? | Never | N/A | Monthly reset |
// Three Ways to Pay
API Key (Stripe)
Buy a prepaid key with a credit card. Use it in any request via Authorization: Bearer apk_xxx. Top up anytime. Instant activation.
x402 USDC (Crypto)
Native HTTP 402 micropayments. Send USDC on Base, Solana, or Stellar. No account needed — pay per request via the x402 V2 protocol.
Free Tier
No auth needed. 3 calls/day per IP. Just POST JSON to any endpoint. Perfect for testing and prototyping before committing.
// Frequently Asked Questions
x402 V2 is an open payment protocol based on HTTP status code 402 (Payment Required). When you call an API endpoint, the server returns a 402 response with a
PAYMENT-REQUIRED header containing payment instructions — wallet address, amount, and supported chains (Base, Solana, Stellar). Your agent signs a USDC payment and attaches it as a PAYMENT-SIGNATURE header. The server verifies via a facilitator and returns your result instantly. It enables truly autonomous, pay-per-use AI without subscriptions or API keys.
AiPayGen uses prepaid credits, not subscriptions. Buy credits with a credit card via Stripe — you get an API key and each call deducts from your balance. No recurring charges, no surprise bills. You also get a 20% bulk discount when your balance is $2 or more. Alternatively, use x402 USDC micropayments to pay per call with crypto — no API key needed.
Prepaid API credits are non-refundable once purchased, as they are consumed per-call. If you experience billing issues or errors, contact us at [email protected] and we will work with you to resolve it.
Your API key still works, but calls return a 402 Payment Required response until you top up. You can fall back to the free tier (3 calls/day) without any key. No data is lost — your memory, skills, and configurations persist.
No. Prepaid credits never expire. Use them at your own pace.
15 frontier models across 7 providers: Claude (Anthropic), GPT-4o & GPT-4o-mini (OpenAI), Gemini 2.0 & 1.5 (Google), DeepSeek V3 & R1, Llama 3, Mistral, and more. Pass a
model parameter to choose, or let AiPayGen route automatically for best results.
No. AiPayGen uses prepaid credits, not subscriptions. Buy once, use whenever. No recurring charges.
Yes. AiPayGen has a seller marketplace where you can list your own API endpoints. You set the price, we handle payments and distribution. Sellers receive 85% of revenue, paid out in USDC.
The fastest way:
pip install aipaygen-mcp and add it to your MCP client (Claude Code, Cursor, Windsurf). You get 3 free calls per day with no sign-up. For higher volume, buy credits to get an API key.
Ready to build?
Start with 3 free calls today. No credit card required.