FarOut Kimi K3 Chat Completions (Pay-Per-Call via x402)

x402

FarOut Kimi K3 Chat Completions (Pay-Per-Call via x402) is a paid API for AI agents from farouter.tech, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-30).

Runs a Kimi K3 LLM chat completion request, billed per-call in USDC on Base via x402 — no API key or account required.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

[OI]-compatible LLM inference API for autonomous agents. Supports reasoning, coding and chat workloads across 10 frontier models (GPT-5.5, GPT-5.6, GLM 5.3, Kimi K3, DeepSeek V4, MiniMax M3). Pay per request with USDC on Base using x402. No prepaid balance required, no API key, no account.

Output

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.

Example use cases

Agent-driven code review assistant

“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”

Serverless reasoning for autonomous pipeline

“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?'”

No-account chatbot backend for a demo app

“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.”

Technical details

Endpoint

POSThttps://farouter.tech/v1/models/kimi-k3/chat/completions?utm_source=zero.xyz

When to prefer

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.

Side effects

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

Input

Schema · Request body

Field	Type	Description
model	string	Model id from GET /v1/models, e.g. glm-5.3. No provider prefix.
stream	boolean	SSE streaming.
messages	array	Chat messages, [OI]-compatible {role, content}.
max_tokens	integer	Output token budget. Sets your spending cap; actual usage is what gets settled (true-up).
temperature	number	Sampling temperature.
max_completion_tokens	integer	Alias of max_tokens (gpt-5.x models).

Output

Schema · Response

{
  "type": "json",
  "example": {
    "usage": {
      "prompt_tokens": 6,
      "completion_tokens": 8
    },
    "choices": [
      {
        "message": {
          "role": "assistant",
          "content": "Hello! How can I help?"
        },
        "finish_reason": "stop"
      }
    ]
  }
}

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