---
id: 20260718-T0-01
title: "Kimi K3 发布：2.8T 参数、50B 激活，最大开源模型"
title_en: "Kimi K3: 2.8T parameters, 50B active, largest open model, Opus 4.8-class at Sonnet 5 pricing"
url: https://ai.daily.yangsir.net/daily/20260718-T0-01
issue_date: 2026-07-18
publish_date: 2026-07-17T01:46:36.000Z
category: release
source_name: "Latent Space"
source_url: https://www.latent.space/p/ainews-kimi-k3-28t-a50b-the-largest
---

# Kimi K3 发布：2.8T 参数、50B 激活，最大开源模型

Kimi 发布 K3 开源模型，参数量达 2.8T，每次推理仅激活 50B 参数。性能对标 Opus 4.8 级别，但定价与 Sonnet 5 看齐，成为目前最大的开源模型。这对于开源社区和预算有限的开发者来说，意味着能以更低成本获得接近顶级闭源模型的能力。

## English Version

**Kimi K3: 2.8T parameters, 50B active, largest open model, Opus 4.8-class at Sonnet 5 pricing**

Kimi released K3, the largest open model ever, with 2.8 trillion total parameters and only 50B activated per inference. It achieves Opus 4.8-class performance at Sonnet 5 pricing, offering developers near-top-tier capabilities at a fraction of the cost.

---

**来源**：[Latent Space](https://www.latent.space/p/ainews-kimi-k3-28t-a50b-the-largest)

**详情页**：https://ai.daily.yangsir.net/daily/20260718-T0-01

---

*智语观潮 · Daily — https://ai.daily.yangsir.net/llms.txt*