{"uid":"cap_6CAYQzHvlHYau_wkcwV0P","slug":"model-access-gateway-kimi-k3-chat-completions-x402-usdc-b0f76a0a","name":"Model Access Gateway – Kimi K3 Chat Completions (x402, USDC)","description":"LLM inference API: OpenAI-compatible chat completions for 136 AI models (Claude, GPT, Gemini, Grok, DeepSeek, Qwen, Kimi, GLM), paid per call in USDC on Base with x402. No account, no API key, automatic refund if the model fails.","url":"https://modelaccessgateway.com/llm/kimi-k3?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Optional: fixed by the route (moonshot/kimi-k3)"},"tools":{"type":"array"},"stream":{"type":"boolean","description":"true: server-sent events after payment"},"messages":{"type":"array","items":{"type":"object","required":["role"],"properties":{"role":{"enum":["system","user","assistant","tool","developer"],"type":"string"},"content":{"type":["string","array","null"]}}},"minItems":1},"max_tokens":{"type":"integer","maximum":16384,"minimum":1,"description":"Optional, default 4096"},"temperature":{"type":"number","maximum":2,"minimum":0},"response_format":{"type":"object"}}},"responseSchema":{"type":"json","example":{"id":"chatcmpl-7f3c2a91","model":"moonshot/kimi-k3","usage":{"total_tokens":10,"prompt_tokens":9,"completion_tokens":1},"object":"chat.completion","choices":[{"index":0,"message":{"role":"assistant","content":"OK"},"finish_reason":"stop"}],"created":1791979200}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.0014","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":"$0.0014/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0014","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.0014","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5hjjIRAyECCcCXvece0u0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.0014","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs OpenAI-compatible chat completions against Moonshot's Kimi K3 model, billed per-call in USDC on Base via x402 with no account or API key required.","exampleAgentPrompt":"Ask Kimi K3 to summarize the following article in 3 bullet points and keep the response under 200 tokens — pay with USDC on Base, no API key needed.","exampleUseCases":[{"title":"Crypto-native agent calling LLM","prompt":"I'm building an autonomous agent that needs to call an LLM without managing API keys or subscriptions — use Kimi K3 to answer the user's question and pay the $0.0023 per-call fee in USDC automatically."},{"title":"Rapid prototyping without signup","prompt":"I want to test Kimi K3's reasoning on this math problem without creating any account — just send it my message and deduct the USDC cost from my wallet."},{"title":"Streaming chat response generation","prompt":"Generate a detailed step-by-step cooking recipe using Kimi K3, stream the response as it comes in, and limit the output to 1000 tokens — bill it per-call in USDC."}],"resultDescription":"Returns a standard OpenAI-format chat.completion JSON object containing the assistant's message content, finish reason (e.g. 'stop'), prompt/completion/total token counts, model identifier ('moonshot/kimi-k3'), and a unique completion ID. When streaming is enabled, responses arrive as server-sent events. If the model fails, an automatic refund is issued.","failureModes":["Insufficient USDC balance — payment rejected, no completion returned","Model-side failure — automatic refund issued, no content","Malformed messages array (missing role field) — 400 validation error","max_tokens exceeds 16384 — request rejected","Temperature out of range 0–2 — validation error","Payment network congestion on Base — delayed or failed settlement"],"whenToPreferThis":"Choose this endpoint when you need Kimi K3 (Moonshot) specifically, want to pay per-call in USDC without an API key or account, need an OpenAI-compatible interface for easy drop-in use, or are building crypto-native agents that manage their own payments. Prefer alternatives if you need a different model family, want traditional API-key billing, or require SLA guarantees beyond automatic refunds.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-18T06:35:23.029Z","isFirstParty":false,"canonicalSlug":"model-access-gateway-kimi-k3-chat-completions-x402-usdc-b0f76a0a"}