{"uid":"cap_NMcu0kdam4supZ9Mi_e_v","slug":"farout-kimi-k3-chat-completions-pay-per-call-via-x402-515a89f6","name":"FarOut Kimi K3 Chat Completions (Pay-Per-Call via x402)","description":"Fixed-price chat completions for kimi-k3 on FarOut: flat $0.002 per call (includes up to 4,000 input + 1,000 output tokens). Rate: $0.192/1M input tokens, $0.960/1M output tokens. Pay with USDC on Base using x402. No API key, no account, no prepaid balance.","url":"https://farouter.tech/v1/models/kimi-k3/chat/completions","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"model":{"type":"string","description":"Model id from GET /v1/models, e.g. glm-5.3. No provider prefix."},"stream":{"type":"boolean","description":"SSE streaming."},"messages":{"type":"array","items":{"type":"object","required":["role","content"],"properties":{"role":{"enum":["system","developer","user","assistant","tool"],"type":"string"},"content":{}},"additionalProperties":true},"minItems":1,"description":"Chat messages, [OI]-compatible {role, content}."},"max_tokens":{"type":"integer","minimum":1,"description":"Output token budget. Sets your spending cap; actual usage is what gets settled (true-up)."},"temperature":{"type":"number","maximum":2,"minimum":0,"description":"Sampling temperature."},"max_completion_tokens":{"type":"integer","minimum":1,"description":"Alias of max_tokens (gpt-5.x models)."}}},"responseSchema":{"type":"json","example":{"usage":{"prompt_tokens":6,"completion_tokens":8},"choices":[{"message":{"role":"assistant","content":"Hello! How can I help?"},"finish_reason":"stop"}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_898B-YowCveJQg6nIyg-M","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Runs a Kimi K3 LLM chat completion request, billed per-call in USDC on Base via x402 — no API key or account required.","exampleAgentPrompt":"Ask Kimi K3 to explain the trade-offs between transformer and state-space sequence models in detail — limit the response to 500 tokens and use a temperature of 0.7.","exampleUseCases":[{"title":"Agent-driven code review assistant","prompt":"Have Kimi K3 review this Python function for bugs and style issues, keep the reply under 300 tokens: def add(a,b): return a+b if a else 0"},{"title":"Serverless reasoning for autonomous pipeline","prompt":"I need Kimi K3 to reason step-by-step through this math problem and return the answer with workings — max 400 tokens, temperature 0: 'A train leaves at 60 mph and another at 80 mph from cities 280 miles apart, when do they meet?'"},{"title":"No-account chatbot backend for a demo app","prompt":"Send a user message to Kimi K3 saying 'What are the top 3 benefits of renewable energy?' — keep it under 200 tokens so we keep costs low."}],"resultDescription":"Returns an OpenAI-compatible JSON object with a choices array containing the assistant's reply message and finish_reason, plus a usage object with prompt_tokens and completion_tokens counts.","failureModes":["Payment rejected or insufficient USDC balance — x402 payment required error","Invalid or unsupported model ID returns 400 bad request","messages array missing or empty — schema validation error","max_tokens set too low, causing truncated or empty response","Rate limiting or quota exceeded on the upstream Kimi K3 provider","Network timeout on long-running reasoning completions","Malformed content in messages causes 422 unprocessable entity"],"whenToPreferThis":"Choose this endpoint when you need Kimi K3 specifically (known for long-context reasoning and multilingual tasks), want pay-per-call billing in USDC with no account or API key setup, or are building an autonomous agent that needs to self-fund LLM calls via x402 micropayments on Base. It is ideal for sporadic, low-volume, or cost-sensitive workloads where prepaid subscriptions are wasteful.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T18:48:35.568Z","isFirstParty":false}