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

vision

tool call

structured output

reasoning

json mode

streaming

fine tuning

batch

Details

Model IDmoonshotai/kimi-k3.1-pro

ProviderNovita AI

CreatorMoonshot AI (Kimi)

Familykimi-k3.1

Licenseproprietary

Parameters—

Statusactive

Input modalitiestext, image

Output modalitiestext

Architecture—

Knowledge cutoff—

Training data cutoff—

Release date2026-10-24

Deprecation date—

Typechat

Reasoning tokens—

Max input—

Open weightNo

Sourceofficial

Last updated2026-10-29

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

—

Price across providers

Provider	Input	Output	Since launch
Vercel AI Gatewaycheapest	$0.3	$7	↓85%
DeepInfra	$2	$10	—
Novita AI	$2	$10	—

Family Comparison: kimi-k3.1

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

API

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