Kimi K3.1 Pro

Name: Kimi K3.1 Pro
Author: Novita AI

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

Show unsupported (3)

Reasoning & Interaction

Reasoning

Tool Calling

Output Control

Structured Output

JSON Mode

Infrastructure

Streaming

Details

Model IDmoonshotai/kimi-k3.1-pro

ProviderNovita AI

CreatorMoonshot 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 date2026-10-24

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

Output

$10

Cache write

—

Cache read

—

Batch in

—

Batch out

—

Family Comparison: kimi-k3.1

Model	Caps	Perf	Speed	Context	Max out	Pricing
Kimi K3.1 Pro	RTJJMS	—	—	1.0M	1.0M	$2$10
Kimi K3.1 Pro Highspeed	RTJJMS	—	—	1.0M	1.0M	$4$20

API

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