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netintel.dev GPT-5.1 Pay-Per-Call Gateway
x402
netintel.dev GPT-5.1 Pay-Per-Call Gateway is a paid API for AI agents from netintel.dev, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-13).
Proxies OpenAI GPT-5.1 chat completions via a pay-per-call x402 endpoint at $0.15 USDC per request — no OpenAI account or API key required.
Price / call$0.15
Success—
StatusUnknown
How this service works
Call OpenAI's gpt-5.1 via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.15 per request in USDC. Standard OpenAI chat.completions request/response shape, capped input and output. Search terms: OpenAI, gpt-5.1, chat completion, LLM, no API key.
Output
Returns a standard OpenAI chat.completion JSON object including an id, model name, created timestamp, choices array (with the assistant's message content and finish_reason), and a usage object detailing prompt_tokens, completion_tokens, and total_tokens. Output is capped at 4096 tokens.
Example use cases
One-off LLM call without OpenAI account
“I need GPT-5.1 to summarize this legal document for me — I don't have an OpenAI account, just charge me per request: 'The parties agree that all intellectual property developed under this contract...' Keep it under 200 words.”
Agent reasoning step with frontier model
“Use GPT-5.1 to analyze these five customer support tickets and classify each as billing, technical, or general inquiry — here are the tickets: [ticket1]...[ticket5].”
System-prompted creative writing task
“Have GPT-5.1 act as a professional copywriter and write three tagline options for my new productivity app called FocusForge — keep each tagline under 10 words and make them punchy.”
Technical details
Endpoint
POSThttps://netintel.dev/openai/gpt-5-1When to prefer
Choose this endpoint when you need GPT-5.1 specifically (the latest OpenAI flagship model) on a pay-per-call basis without managing an OpenAI account, API keys, or subscription. Ideal for agents making occasional or unpredictable LLM calls, cost-sensitive pipelines that want per-call USDC billing, or sandboxed environments where storing API credentials is undesirable. Prefer GPT-4o or GPT-4.1 siblings on the same gateway if GPT-5.1 pricing or capability is more than needed.
Side effects
- Insufficient USDC balance or x402 payment failure — payment required error
- Input exceeds ~96000 character cap — request rejected
- max_completion_tokens set above 4096 — capped or rejected
- Malformed messages array (missing role or content) — validation error
- OpenAI upstream outage or rate limit — 502 or 503 error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"id": "chatcmpl-abc123",
"model": "gpt-5.1",
"usage": {
"total_tokens": 13,
"prompt_tokens": 11,
"completion_tokens": 2
},
"object": "chat.completion",
"choices": [
{
"index": 0,
"message": {
"role": "assistant",
"content": "Hi!"
},
"finish_reason": "stop"
}
],
"created": 1735689600
}
}Tags
x402
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