{"uid":"cap_1i1eMlqboHetu1RAUIKxg","slug":"grok-4-5-high-chat-completions-via-x402-1578fb27","name":"Grok 4.5 High Chat Completions via x402","description":"Start with DeepSeek V4 Flash at $0.003/call. Six OpenAI-compatible models plus crypto radar/brief/summarize. Free samples. Pay USDC via x402 — no signup.","url":"https://x402donghang.duckdns.org/x402/v1/models/grok-4.5-high/chat/completions","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Use \"grok-4.5-high\""},"stream":{"type":"boolean"},"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"type":"string"},"content":{"type":"string"}}}},"max_tokens":{"type":"number"}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-x402","model":"grok-4.5-high","object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"Hello!"},"finish_reason":"stop"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_dWNr5zBhUNAQJG1gqRxOu","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Provides OpenAI-compatible chat completions using the Grok 4.5 High model, billed per-call at $0.01 USDC via the x402 payment protocol.","exampleAgentPrompt":"Ask Grok 4.5 High this question using the pay-per-call API: 'What are the top three factors driving ETH price action right now?' — up to 500 tokens, no streaming.","exampleUseCases":[{"title":"Crypto narrative analysis via Grok","prompt":"Use Grok 4.5 High to explain the current market narrative around Bitcoin dominance in a few paragraphs — I want a high-quality reasoned take, not just a summary."},{"title":"Agent pipeline LLM reasoning step","prompt":"In my agent workflow, I need Grok 4.5 High to evaluate this text and decide whether it represents bullish or bearish sentiment: 'Institutions are quietly accumulating BTC while retail panic sells.' Give me its reasoning."},{"title":"One-off question without LLM subscription","prompt":"I don't have a Grok API key but I need a smart answer fast — ask Grok 4.5 High: what are the biggest risks of holding altcoins through a Fed rate hike cycle? Keep it under 300 tokens."}],"resultDescription":"Returns an OpenAI-compatible chat completion JSON object containing an id, model name ('grok-4.5-high'), object type ('chat.completion'), and a choices array with the assistant's message content, role, and finish reason (e.g. 'stop').","failureModes":["Payment failure or insufficient USDC balance returns 402 Payment Required","Invalid model name other than 'grok-4.5-high' may cause a 400 or model-not-found error","Malformed messages array (missing role or content) returns validation error","max_tokens set too high may be capped or cause timeout","Service unavailability on the duckdns-hosted server returns 503 or timeout"],"whenToPreferThis":"Choose this endpoint when you need access to Grok 4.5 High's reasoning capabilities without a monthly xAI subscription, especially in agentic pipelines that already handle x402 micropayments. It is ideal for low-frequency or burst usage where per-call billing ($0.01 USDC) is cheaper than a subscription, and when you need an OpenAI-compatible interface so you can swap it in with minimal code changes.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T12:39:14.139Z","isFirstParty":false}