{"uid":"cap_BlnzElkgbCytxM2_EmOsE","slug":"singit-ask-gpt-5-5-chat-completions-f8ef1975","name":"SingIt Ask – GPT-5.5 Chat Completions","description":"SingIt Ask: GPT-5.5 (OpenAI) chat completions with no API key or account, OpenAI-compatible. OpenAI's GPT-5.5 model: general-purpose chat, coding and reasoning. Call it when an agent needs GPT-5.5 specifically.","url":"https://ask.singitai.app/v1/chat/gpt-5.5?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","examples":["deepseek-v4.1-flash","claude-opus-5.5","gpt-5.5","gemini-3.1-pro"],"description":"Any model id from GET /v1/models; the ceiling follows its price. Omit for the default model."},"stream":{"enum":[false],"type":"boolean","description":"Streaming is not offered."},"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"enum":["system","user","assistant"],"type":"string"},"content":{"type":"string","description":"Plain text; all messages together under 24000 characters."}}},"maxItems":40,"minItems":1,"description":"The conversation, oldest first."},"max_tokens":{"type":"integer","default":800,"maximum":1200,"minimum":1,"description":"The longest answer, in tokens. The payment ceiling grows with it; the charge follows what was used."}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0015","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":"$0.021313/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.021313","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.021313","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_t-XOAZCH2JcPmUy7Ki6km","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.021313","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Provides OpenAI GPT-5.5 chat completions via an OpenAI-compatible API, requiring no API key or account, billed per call via x402.","exampleAgentPrompt":"Ask GPT-5.5 to explain the difference between async and sync programming in Python with a short code example — keep the response under 800 tokens.","exampleUseCases":[{"title":"Coding explanation with GPT-5.5","prompt":"Use GPT-5.5 to explain how Python decorators work, with a practical example showing a logging decorator — limit the response to 600 tokens."},{"title":"Multi-turn reasoning conversation","prompt":"I need to have a back-and-forth reasoning conversation with GPT-5.5 about the pros and cons of microservices vs monoliths — send the whole conversation history and get a thoughtful reply."},{"title":"Drafting a professional email","prompt":"Have GPT-5.5 draft a professional follow-up email to a client who missed our meeting yesterday, keeping it concise and friendly — limit it to about 400 tokens."}],"resultDescription":"Returns an OpenAI-compatible chat completion object containing the assistant's generated text response, role, and usage metadata (tokens used). Streaming is not supported; the full reply is returned in one response.","failureModes":["Message content exceeds 24000 character limit — request rejected","max_tokens set above 1200 — request rejected","Fewer than 1 message in the messages array — validation error","Payment not provided or insufficient USDC via x402 — 402 Payment Required","Invalid model ID specified — model not found error","Messages array exceeds 40 items — request rejected"],"whenToPreferThis":"Choose this endpoint when an agent specifically needs GPT-5.5 from OpenAI and does not have an OpenAI API key, or when using a pay-per-call model via x402 micropayments is preferred over a subscription. It is OpenAI-compatible so it integrates with existing OpenAI SDK tooling with a base URL swap. Prefer sibling endpoints for image generation, speech synthesis, or web search tasks.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-30T19:06:01.146Z","isFirstParty":false,"canonicalSlug":"singit-ask-gpt-5-5-chat-completions-f8ef1975"}