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x402engine.app llm gpt-5.6-sol
https://x402engine.app/api/llm/gpt-5.6-sol
answers 402
OpenAI's flagship GPT-5.6 tier for complex analysis, coding, and planning
We sent a real
POST request to this endpoint and it
answered 402 with payment requirements we could parse.
- Price
- $0.08
- Network
- base
- Pay to
- 0x7dd5Be069f2d2eAd75eC7C3423B116fF043c2629
- Spec dialect
- v2 (declares x402Version 2)
- Transport
- PAYMENT-REQUIRED header
- HTTP method
- POST
- Response latency
- 198 ms
- Payment options
- 3 usable of 3
- Last checked
- 2026-08-15T14:38:22.266Z (5d ago)
- Category
- ai-inference
Re-check it yourself:
curl "https://api.the402.dev/validate?url=https%3A%2F%2Fx402engine.app%2Fapi%2Fllm%2Fgpt-5.6-sol"