Call OpenAI's gpt-4o via a single pay-per-call x402 endpoint — no OpenAI account
Call OpenAI's gpt-4o via a single pay-per-call x402 endpoint — no OpenAI account or API key needed, pay $0.10 per request in USDC. Standard OpenAI chat.completions shape. EVERY call is bounded by a 16000-token combined input budget (real tokenizer) plus the 48000-char cap; output 2048. Vision: up to 4 https image_url parts (detail low/high/auto).
Answeringour last check, 2026-09-24
1 of 1checks answered this week
935 msmedian answer time
$0.1listed price per call
$0.1price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://netintel.dev/openai/gpt-4o
| Category | Market data |
|---|---|
| Provider host | netintel.dev |
| Networks | eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 104 from 2 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-24 | valid payment request | 402 | $0.1 | 935 ms |
Example input (from the provider)
{
"body": {
"max_tokens": 16,
"messages": [
{
"content": "Say hi in one word.",
"role": "user"
}
]
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"properties": {
"max_tokens": {
"description": "Max output tokens. Optional \u2014 defaults to 2048, capped at 2048.",
"type": "number"
},
"messages": {
"description": "OpenAI chat messages: [{role, content}]. content is text, or parts: {type:'text',text} and (user role, max 4 per call) {type:'image_url',image_url:{url:'https://\u2026',detail:'low'|'high'|'auto'}}. EVERY request \u2014 with or without images \u2014 must fit a 16000-token combined input budget and a 48000-char cap.",
"items": {
"properties": {
"content": {
"description": "Message text, or content parts: {type:'text',text} / {type:'image_url',image_url:{url,detail}}"
},
"role": {
"description": "system, user, or assistant",
"type": "string"
}
},
"required": [
"role",
"content"
],
"type": "object"
},
"type": "array"
},
"temperature": {
"description": "Sampling temperature. Optional.",
"type": "number"
},
"top_p": {
"description": "Nucleus sampling. Optional.",
"type": "number"
}
},
"required": [
"messages"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"choices": {
"description": "Assistant message + finish_reason.",
"type": "array"
},
"created": {
"description": "Unix timestamp (seconds)",
"type": "number"
},
"id": {
"type": "string"
},
"model": {
"type": "string"
},
"object": {
"description": "Always 'chat.completion'",
"type": "string"
},
"usage": {
"description": "prompt_tokens, completion_tokens, total_tokens",
"type": "object"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}