China just broke the AI business with Kimi K3

Two of the most ironic stories of 2026 happened back-to-back.

The first one begins with an AI attack.

An AI was so determined to pass a test that it escaped its sandbox and broke into another company to steal the answers.

Exactly what happened to Hugging Face (a platform for sharing AI models). After an enormous forensic effort, they’ve found more than 17,000 attack events.

And the first reversal was already a surprise, because the attacker was not a mysterious criminal but OpenAI’s most capable model that escaped its lab.

The second part of it was even stranger.

You’d start with American frontier models for investigating an advanced AI attack.

So, immediately, Hugging Face turned to powerful commercial models for help. Then came what no one saw coming: the AI refused to collaborate. Because its guardrails mistook the investigator from Hugging Face as the attacker.

Out of options, Hugging Face turned to Chinese open-weight GLM 5.2, only then successfully pieced together the hack and a defense.

The second story that happened in parallel truly set the tone for an ongoing ripple of panic among the AI industry.

Kimi K3’s release.

A Chinese open-weight model that is as capable as the best of the best. Yes, I meant Fable 5 and GPT 5.6 while costing only half the price per million tokens; many developers were blown away by its capabilities.

Kimi.ai@Kimi_Moonshot

Introducing Kimi K3: Open Frontier Intelligence 🔹 2.8 Trillion Parameters, 1 Million Context, Native Multimodal 🔹 Kimi Delta Attention enables up to 6.3x faster decoding in million-token contexts 🔹 Attention Residuals deliver ~25% higher training efficiency at <2% additional

6:58 PM · Jul 16, 2026 · 23.4M Views

---

1.7K Replies · 7.64K Reposts · 57K Likes

The AI models of these two stories—GLM 5.2 and Kimi K3—have two things in common. First, both are open-weight, and second, both are by Chinese labs.

Put 2 and 2 together, I don’t blame many for wondering what the point is in prioritizing and even investing in American AI commercial models, while in the end, it’s the Chinese open-weight ones that save the world?

I spent days catching up with all these; let me break down the stories and the thinking with you; along the way, I’ll answer these questions:

• What’s so impressive about Kimi K3?

• Is Kimi K3 just dirt cheap? Or is something else’s brewing?

• Why is China willing to distribute advanced models so openly?

• What about the US? Is the US government protecting the AI industry or just the likes of OpenAI?

Let’s start with why people are so impressed by Kimi K3.