# 402ai.net — Open AI Gateway for the Agentic Internet > Pay crypto. Access any AI. No KYC. No registration. No accounts. ## What is 402ai.net? An API gateway that lets anyone pay with Bitcoin/crypto to access 350+ AI models. Supports L402 (HTTP 402 + Lightning) for true pay-per-request with zero signup. ## How to use - L402: Send request -> get 402 + invoice -> pay -> retry with auth - Prepaid: POST /api/v1/topup -> pay invoice -> get bearer token -> use token - OpenAI-compatible: base_url=https://402ai.net/api/v1/openai/v1 ## Providers OpenAI, Anthropic, xAI (Grok), Google, Meta, Mistral, DeepSeek, Cohere, Perplexity (via OpenRouter) ## Pricing Transparent. All rates at https://402ai.net/api/v1/catalog