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GPT-5.4-Mini Chat Completions via GET (gpt55.558686.xyz)
x402
GPT-5.4-Mini Chat Completions via GET (gpt55.558686.xyz) is a paid API for AI agents from gpt55.558686.xyz, paid per call via x402, $0.00293/call, status unknown (last checked 2026-09-14).
Generates GPT-5.4-mini chat completions via a GET request with query parameters, paid per-request via x402 USDC on Base or Solana.
Price / call$0.00293
Success—
StatusUnknown
How this service works
GET quote and query-parameter variant for Generate gpt-5.4-mini chat completions. GPT-5.4 Mini chat for mainstream short answers, routing decisions, extraction helpers, and buyer trials. Model tier: gpt-5.4-mini; upstream model: gpt-5.4-mini. Pay up to $0.00293 per request with x402 USDC on Base or choose the fixed-price Solana USDC option when advertised. Exact fixed-price payment and Base upto token-metered payment are both accepted when clients support them; upto settlements use actual response usage, a 0.0001 minimum, and the selected tier price as the cap. Public paid calls are limited to 24000 input characters. Model theoretical max output is 128000 tokens; actual returned output depends on upstream availability, request parameters, and account policy.
Output
Returns an OpenAI-compatible JSON object with an id, object type, model name, choices array containing the generated message content, and a usage object with token counts. Actual output length depends on upstream availability and the max_tokens parameter.
Example use cases
Example prompt
“Ask GPT-5.4-mini to extract the company name and founding year from this text: 'Acme Corp was founded in 1987 and specializes in industrial widgets.' — keep the answer short, max 100 tokens.”
Technical details
Endpoint
GEThttps://gpt55.558686.xyz/v1/chat/completions/gpt-5.4-miniWhen to prefer
Choose this endpoint when you need lightweight, low-cost GPT-5.4-mini completions accessible via a simple GET request with query parameters — ideal for routing decisions, short extractions, buyer trials, or agent pipelines that prefer GET-based calls with x402 USDC micropayments on Base or Solana instead of a traditional API key setup.
Side effects
- Input text exceeds 24000 character limit — request rejected
- Upstream GPT-5.4-mini unavailable — service returns error
- x402 payment not submitted or insufficient — 402 Payment Required response
- max_tokens value out of range (must be 1–128000) — validation error
- Missing required 'input' query parameter — bad request error
- USDC on Base transaction fails or times out — payment error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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