Kimi K3

[thinks]

Moonshot AI[text]

Flagship 2.8T MoE (largest open-source model ever) with 1M context, built for long-horizon coding and agent workloads

Input

per 1M tokens

Output

$15

per 1M tokens

Context

1.0M tokens

Max Output

131K tokens

Released

2026-07-16

Features

[mandatory-reasoning][2.8t-params-(16/896-experts-active)][1m-tokens-context][#3-artificial-analysis-at-launch][long-horizon-agents][open-weights-(july-27)]

Technical Specifications

Benchmarks

AIME 202696.7%

Artificial Analysis Intelligence Index57

BrowseComp90.4%

GPQA Diamond91.2%

Humanity's Last Exam (w/ tools)58.7%

SWE-bench Pro63.4%

Terminal-Bench71.8%

The Lab

location: Beijing, Chinafounded: 2023backed by: Tsinghua-linked investment

Founded in 2023 and headquartered in Beijing, Moonshot AI develops the Kimi series of foundation models with Tsinghua-linked backing. The lab built one of China's first consumer-scale long-context LLM products in Kimi Chat, and its K2 family targets agentic coding and knowledge work. Moonshot is among the most heavily funded Chinese AI startups.

more about Moonshot AI →

Model ID: kimi-k3