How much does Kimi K3 cost?

Kimi K3 is billed pay-as-you-go at $2.85 per 1M input tokens and $14.25 per 1M output tokens. There is no subscription — you only pay for what you use.

Kimi K3 supports Tool calling, Reasoning.

Is Kimi K3 free to use?

Kimi K3 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.

How do I use Kimi K3 via the API?

Kimi K3 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID kimi-k3 with your Api.Airforce API key.

Kimi K3 is Moonshot AI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

Moonshot AIPaidOperational

Kimi K3

API model name: kimi-k3

Kimi K3 is Moonshot AI's chat model, served on the Api.Airforce unified API. Capabilities include Tool calling, Reasoning. It is priced at $2.85 per million input tokens and $14.25 per million output tokens. That is below the provider's $3.00 official input rate. Access it through the OpenAI-compatible API with one key, alongside 100+ other models on Api.Airforce.

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Pricing

Input / 1M tokens

$2.85

Output / 1M tokens

$14.25

Cache read / 1M tokens

$0.29

Official input rate

$3.00

Official output rate

$15.00

Api.Airforce price vs. the provider's official rate.-5%

Specifications

Provider: Moonshot AI
Type: chat model

Capabilities

Tool callingReasoning

Benchmarks

Independent evaluations and measured speed from Artificial Analysis.

Measured atSame model, different reasoning effort.

Intelligence Index

59.7/100

Coding Index

76.2/100

GPQA Diamond94%

Humanity's Last Exam47%

SciCode59%

τ-bench Banking46%

Terminal-Bench 2.185%

LCR83%

Output speed36.4 tok/s

Time to first token3.56 s

Kimi K3 (max) · 48.3–59.7

Source: Benchmark data by Artificial Analysis (artificialanalysis.ai)

What is Kimi K3 used for?

Chatbots & assistants — conversational AI, drafting, summarizing and Q&A.
Agents & automation — function calling and tool use for multi-step workflows.
Complex reasoning — math, coding and step-by-step problem solving.

Kimi K3 vs. similar models

Model	Intelligence	Context	Input / 1M	Output / 1M
Kimi K3	59.7	—	$2.85	$14.25
Kimi K2	19.7	—	$0.53	$2.08
Kimi K2	—	—	$0.60	$4.15
Kimi K2 Preview	—	—	$0.35	$1.41

Prices are Api.Airforce pay-as-you-go rates per 1M tokens. Context is the maximum input length.

Kimi K3 — frequently asked questions

How much does Kimi K3 cost?: Kimi K3 is billed pay-as-you-go at $2.85 per 1M input tokens and $14.25 per 1M output tokens. There is no subscription — you only pay for what you use.
What can Kimi K3 do?: Kimi K3 supports Tool calling, Reasoning.
Is Kimi K3 free to use?: Kimi K3 is a paid, pay-as-you-go model — no subscription, you are only charged for usage.
How do I use Kimi K3 via the API?: Kimi K3 is OpenAI-compatible. Point any OpenAI SDK at https://api.airforce/v1 and pass the model ID kimi-k3 with your Api.Airforce API key.
Who makes Kimi K3?: Kimi K3 is Moonshot AI's chat model, served through the unified Api.Airforce gateway alongside 100+ other models.

All models·Quickstart·Chat API reference

Use Kimi K3 via the API

OpenAI-compatible — point any OpenAI SDK at https://api.airforce/v1 and pass kimi-k3 as the model.

cURL

curl https://api.airforce/v1/chat/completions \
  -H "Authorization: Bearer $AIRFORCE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "kimi-k3",
    "messages": [{ "role": "user", "content": "Hello!" }]
  }'

Python

from openai import OpenAI
client = OpenAI(base_url="https://api.airforce/v1", api_key="$AIRFORCE_API_KEY")
r = client.chat.completions.create(
    model="kimi-k3",
    messages=[{"role": "user", "content": "Hello!"}],
)
print(r.choices[0].message.content)

JavaScript

import OpenAI from "openai";
const client = new OpenAI({ baseURL: "https://api.airforce/v1", apiKey: process.env.AIRFORCE_API_KEY });
const r = await client.chat.completions.create({
  model: "kimi-k3",
  messages: [{ role: "user", content: "Hello!" }],
});
console.log(r.choices[0].message.content);