Model index
Moonshot AI·Kimi

Kimi K2

A 1T-total, 32B-active open MoE focused on agentic tool use and coding.

LegacyLanguageCodingAgentOpen weights
MODEL NUMBER024
Release date
2025-07-11
Organization
Moonshot AI
Family
Kimi
01

Specifications

Only published specifications are shown.

Total parameters
1T
Active parameters
32B
Architecture
MoE
Context
128K
Input modalities
Text
Open weights
Yes
License
Modified MIT
Status
Legacy
02

Overview

Overview

A 1T-total, 32B-active open MoE focused on agentic tool use and coding.

Why it mattered

K2 paired trillion-scale MoE with an open agent model and demonstrated large-scale training with the Muon optimizer.

03

Changes from predecessor

Compared with Kimi K1.5

PreviousKimi K1.5 · ctx
CurrentKimi K21T · 128K ctx
New capabilities Agent Coding Tool use
04

Architecture & capabilities

Key capabilities

AgentCodingTool use
05

Release history

Open weights

Kimi K2 launched as an open 1T MoE agent model.

View source
06

Related models

Select a card to view the related model.

07

Sources