{"uid":"cap_d5DHVJiGIO8Oibpsz33ny","slug":"gpt-5-5-true-max-output-paid-chat-x402-usdc-get-75863756","name":"GPT-5.5 True Max-Output Paid Chat (x402 USDC, GET)","description":"OpenAI-compatible GPT-5.5 true max-output paid chat over x402 Base USDC. Directory-friendly GET endpoint for long-form generation, large agent responses, and max-output GPT-5.5 chat completions. Market benchmark: the latest local x402.direct sample found AI-like listing prices with p25 around $0.01 and median around $0.03 per call, while this gateway advertises a $0.110876 compact GPT-5.5 entry request, $0.110876 long-output GPT-5.5 requests, and $0.523889 true max-output GPT-5.5 requests. Pay up to $0.523889 per request with x402 USDC on Base. Exact fixed-price payment and upto token-metered payment are both accepted when clients support them; upto settlements use actual response usage, a 0.0001 minimum, and the selected tier price as the cap. Public paid calls are limited to 700000 input characters and 128000 output tokens.","url":"https://gpt55.558686.xyz/v1/paid/chat-max","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"q":{"type":"string"},"prompt":{"type":"string"},"system":{"type":"string"},"message":{"type":"string"},"max_tokens":{"type":"integer","maximum":128000,"minimum":1}},"additionalProperties":true}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["id","object","model","choices"],"properties":{"id":{"type":"string"},"model":{"type":"string"},"usage":{"type":"object"},"object":{"type":"string"},"choices":{"type":"array"}},"additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.523889","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.523889/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.523889","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.523889","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5gwQ35ptcv9EJz9aCTMhE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.523889","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Generates long-form GPT-5.5 chat completions via a GET endpoint with up to 128,000 output tokens, paid per-request in USDC over the x402 protocol on Base.","exampleAgentPrompt":"Using the max-output GPT-5.5 gateway, write me a comprehensive 50-page technical architecture document for a distributed microservices system — use the prompt 'Design a full distributed microservices architecture with security, scalability, and observability' and allow up to 128000 output tokens.","exampleUseCases":null,"resultDescription":"An OpenAI-compatible chat completion JSON object containing a completion ID, model name, an array of choices with the generated message content, and a usage object showing prompt tokens, completion tokens, and total tokens consumed.","failureModes":["Payment insufficient or missing — x402 payment header not provided or below $0.066667 cap","Prompt exceeds 700,000 input character limit — request rejected","max_tokens value out of range (must be 1–128,000) — validation error","Upstream GPT-5.5 model unavailable or rate-limited — 503 or gateway error","Malformed query parameters — missing required 'q', 'prompt', or 'message' field returns error"],"whenToPreferThis":"Choose this endpoint when you need the absolute maximum output length from GPT-5.5 (up to 128,000 tokens) for long-form generation tasks such as large documents, detailed reports, or multi-step agent responses, and you are paying via x402 USDC on Base. Prefer this over the compact or long-output tiers when output length is the priority and cost per call up to $0.066667 is acceptable.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T00:51:29.220Z","isFirstParty":false}