GPT-5.5 x402 Gateway

Low-cost OpenAI-compatible GPT-5.5 chat completions for AI agents, apps, and scripts. Pay per request with x402 exact or upto payments in USDC on Base; no subscription and no public API key required. The public x402 price is $0.004 per request with concise output limits for predictable cost.

How to call

curl -X POST https://gpt55.558686.xyz