Kimi K3.1 Pro

proprietary

Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.

Context
1.0M
Max output
1.0M
Input price
$2/1M tokens
Output price
$10/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming

Details

Model IDmoonshotai/kimi-k3.1-pro
Provider Novita AI
Creator Moonshot AI (Kimi)
Familykimi-k3.1
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output1.0M tokens
Reasoning tokens—
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Chat CompletionsPOST
Generate chat responses with messageshttps://api.novita.ai/v3/openai/v1/chat/completions

Pricing

Input
$2
Output
$10
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: kimi-k3.1

ModelContextMax outPricing
Kimi K3.1 Pro1.0M1.0M$2$10
Kimi K3.1 Pro Highspeed1.0M1.0M$4$20

API

GET/v1/models/novita/moonshotai/kimi-k3.1-pro

Kimi K3.1 Pro

moonshotai/kimi-k3.1-pro

Kimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window.

Changes · 2 entries
moonshotai/kimi-k3.1-procreateca7a400Nov 2, 2026, 03:02 AM
moonshotai/kimi-k3.1-procreateb2f45bfOct 29, 2026, 03:29 AM