GPT-5.5 GET True Max-Output Chat 128k x402

Directory-friendly GET GPT-5.5 true max-output chat endpoint for agents and API directories. Uses x402 exact Base USDC, costs $0.066667 per call, and supports up to 128000 output tokens.

https://gpt55.558686.xyz/v1/paid/chat-max?max_tokens=512&q=Write+a+detailed+technical+report

USE THIS RESOURCE

Start with a quote-only recipe. Payment signing stays in your project.

CODE

AI CODING TOOLS

quote-check.ts

const response = await fetch("https://gpt55.558686.xyz/v1/paid/chat-max?max_tokens=512&q=Write+a+detailed+technical+report", {
  method: "GET",
});

console.log(response.status);
console.log(Object.fromEntries(response.headers));
console.log((await response.text()).slice(0, 1000));

// A valid 402 is a quote, not a completed paid call.

This sends no payment. Inspect the 402 response before adding a wallet-enabled client.

JSON ↗developer docs →

STATUS HISTORY

JSON RSS

Exact route checked2026-07-10 15:05 UTC
skipped origin unreachable · origin-check:ERR_SSL_PACKET_LENGTH_TOO_LONG
Origin unavailable2026-07-10 15:04 UTC
ERR_SSL_PACKET_LENGTH_TOO_LONG
Observed in 402-index2026-07-10 13:31 UTC
Discovered through self-registered.
Registry record checked2026-07-08 00:09 UTC
Registry health: degraded.

EVIDENCE

402-indexobserved 2026-07-10 · https://402index.io/api/v1/services

origin checkHEAD https://gpt55.558686.xyz/ → ERR_SSL_PACKET_LENGTH_TOO_LONG on 2026-07-10

route quoteexact route was not attempted because the origin was unreachable · origin-check:ERR_SSL_PACKET_LENGTH_TOO_LONG · 2026-07-10

Each record has an exact-route quote outcome. Unresolved templates and potentially mutating methods are labeled instead of being invoked without provider-specific test input. A quote is still separate from a settled paid call.

PAYMENT OPTIONS

The registry did not expose full payment options for this record.