Kimi K3.1 Pro API: Pricing & Setup

Kimi K3.1 Pro pricing

RouterHub token prices · USD per million tokens
Model / exact API ID	Variant	Input	Cached input	Output	Context	Availability
Kimi K3.1 Pro `kimi-k3.1-pro`	standard	$0.2	$0.02	$1	1,048,576 tokens	available

Prices are USD per million tokens. Cached input uses the cache-read rate when a cache hit is reported.

Compare variants

RouterHub token prices · USD per million tokens
Model / exact API ID	Variant	Input	Cached input	Output	Context	Availability
Kimi K3.1 Pro `kimi-k3.1-pro`	standard	$0.2	$0.02	$1	1,048,576 tokens	available
Kimi K3.1 Pro Uncensored `kimi-k3.1-pro-uncensored`	uncensored	$0.3	$0.03	$1.5	1,048,576 tokens	preview

API compatibility and context

Exact model ID: kimi-k3.1-pro
Variant: standard
Supported API: OpenAI-compatible Chat Completions
Availability: available
Context window: 1,048,576 tokens
Maximum input: 1,048,575 tokens
Maximum output: 1,048,576 tokens

Use Kimi K3.1 Pro through the API

Create a RouterHub account, add prepaid credits and create an API key. Set ROUTERHUB_API_KEY locally, then send a first request with the exact model ID below.

cURL

curl --connect-timeout 30 --max-time 600 https://routerhub.si/v1/chat/completions \
  -H "Authorization: Bearer $ROUTERHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"kimi-k3.1-pro","messages":[{"role":"user","content":"Write a short noir scene set in a lighthouse."}],"max_tokens":256}'

Python

Install openai with pip. The examples request 256 output tokens and disable automatic retries. Check Usage after completion or a timeout before resending a paid request.

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["ROUTERHUB_API_KEY"],
    base_url="https://routerhub.si/v1",
    timeout=600.0,
    max_retries=0,
)
response = client.chat.completions.create(
    model="kimi-k3.1-pro",
    messages=[{"role": "user", "content": "Write a short noir scene set in a lighthouse."}],
    max_tokens=256,
)
print(response.choices[0].message.content)

Kimi K3.1 Pro FAQ

What is Kimi K3.1 Pro?

Kimi K3.1 Pro is a Moonshot AI language model served through RouterHub using the OpenAI-compatible Chat Completions API.

How much does Kimi K3.1 Pro cost?

RouterHub charges $0.2 input / $0.02 cached / $1 output per million tokens. Usage is billed against your prepaid balance.

What is the Kimi K3.1 Pro context window?

Context window: 1,048,576 tokens. Maximum input: 1,048,575 tokens. Maximum output: 1,048,576 tokens.

Which API does Kimi K3.1 Pro support?

Use OpenAI-compatible Chat Completions with the exact model ID kimi-k3.1-pro and your RouterHub API key.

Which variants can I compare with Kimi K3.1 Pro?

Compare Kimi K3.1 Pro with Kimi K3.1 Pro Uncensored. The comparison table includes their input, cached input, output and context.