Kimi K3.1 Pro

Moonshot AI's flagship 3T-class open-weight model with 1M context, strong coding, 3D creation, and financial research.

Input price: $2.0878
Output price: $10.9208

Context: 1M
Max output: 1M

Capability: 162 (#14 of 79)
Human preference: 1457
30-day uptime: —

Released: 2026-10-23

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Providers

Providers that serve this model. With Auto, each request goes to the best available provider. Prices in USD per 1M tokens; stats cover the last 30 days.

AutoInput$2.0878Output$10.9208Cache read$0.20878Context1MMax output1MWe send each request to the best-priced healthy provider. You pay that provider’s price.Moonshot AI (Kimi)Input$2.0878Output$10.9208Cache read$0.20878ChinaNo trainingTencent Cloud TokenHubInput$2.0878Output$10.9208Cache read$0.20878ChinaNo training

Pricing

All prices for this model, by service tier.

Input: $2.0878; per 1M tokens
Output: $10.9208; per 1M tokens
Cache read: $0.20878; per 1M tokens
Cache write (5 min): $2.0878; per 1M tokens
Cache write (1 hour): $4.1756; per 1M tokens

Try it

Runs on your balance and is billed like any API request.

curl https://api.ohmygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $OHMYGPT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "moonshot/kimi-k3.1-pro",
    "messages": [
      {
        "role": "user",
        "content": "Hello"
      }
    ]
  }'

import os

from openai import OpenAI

client = OpenAI(
    api_key=os.environ["OHMYGPT_API_KEY"],
    base_url="https://api.ohmygpt.com/v1",
)

response = client.chat.completions.create(
    model="moonshot/kimi-k3.1-pro",
    messages=[{"role": "user", "content": "Hello"}],
)
print(response.choices[0].message.content)

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.OHMYGPT_API_KEY,
  baseURL: "https://api.ohmygpt.com/v1",
});

const response = await client.chat.completions.create({
  model: "moonshot/kimi-k3.1-pro",
  messages: [{ role: "user", content: "Hello" }],
});
console.log(response.choices[0].message.content);

The answer streams in here.

Billed by usage

Similar models

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Better value: more capable, lower price
Pareto frontier
This model
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Capability scores are from Epoch AI’s Epoch Capabilities Index (CC BY 4.0, as of 2026-11-10), which combines dozens of benchmarks with GPT-5 set at 150. epoch.ai/eci

Price: our current input price per 1M tokens in USD, lowest across channels. Dated snapshots and resold copies of the same model are merged into one point; free models are not shown.

Shaded area: capability above and price below the median of all models. Pareto frontier: no other model is both cheaper and more capable.

Kimi K3.1 ProThis model

Capability: 162
Input: $2.0878
Output: $10.9208

Kimi K2.7 Code HighSpeed

Capability: 151
Input: $2.0878
Output: $8.6724

Claude Sonnet 5.5

Capability: 166
Input: $2.20–$2.42
Output: $11.00–$12.10

Grok 4.5

Capability: 155
Input: $2.20
Output: $6.60

GPT-5.4

Capability: 158
Input: $2.25–$4.50
Output: $13.50–$20.25

Human preference ratings are from the LMArena Text Arena (CC BY 4.0, as of 2026-11-09): Elo ratings from blind votes, on a different scale from capability scores. lmarena.ai/leaderboard/text