Friday Jul 17
RESEARCHOther

Moonshot Ships A 2.8 Trillion Model

17JUL
MOONSHOT$3/M

China just shipped the biggest open AI model yet. Moonshot released Kimi K3, a 2.8 trillion parameter model anyone can download. It undercuts Western labs on price and capability.

Kimi K3 uses a mixture-of-experts design, activating only 16 of 896 experts per token. It reads text, images, and video, with a 1 million token context window.

Pricing lands around $3 per million input tokens and $15 per million output tokens. That undercuts most Western flagships by a wide margin. Independent benchmarks are still pending, so treat the early numbers as reported, not verified.

Full open weights arrive by July 27, letting anyone fine-tune or self-host it. That is a direct challenge to closed labs charging premium prices for similar capability.

full brief & sources

⚡ Why this matters

  • Closed labs like Anthropic and OpenAI now compete against free, downloadable rivals near their capability level.
  • China's open-weight strategy keeps pressuring Western pricing and margins.
  • Enterprises get a credible low-cost option for internal deployment.

🔍 What happened

  • Moonshot AI released Kimi K3 on July 16, 2026.
  • The model has 2.8 trillion total parameters using a mixture-of-experts architecture.
  • It activates 16 of 896 experts per token, called Stable LatentMoE.
  • Context window reaches 1 million tokens, with text, image, and video input.
  • API pricing is roughly $3 per million input tokens and $15 per million output tokens.
  • Full open weights are promised by July 27, 2026.

💬 Smart takes

  • Simon Willison, independent AI researcher: the rollout is happening in real time, with official docs live while independent benchmarks are still pending.
  • Skeptic: reported benchmark numbers come from Moonshot's own launch materials, not third-party testing yet.

🧭 Where this goes

  1. Likelyindependent benchmarks confirm Kimi K3 lands close to Claude Opus 4.8 on coding and reasoning tasks.
  2. Likelyenterprises test Kimi K3 for cost-sensitive internal tools within the next quarter.
  3. PossibleAnthropic or OpenAI respond with a price cut on a mid-tier model.
  4. Wild Carda major Western cloud provider hosts Kimi K3 directly, legitimizing it for enterprise use.

🥄 The Spoon Take

Every time a Chinese lab ships a frontier-class model for free, the closed labs' pricing power erodes a little more. Kimi K3 is 2.8 trillion parameters, undercuts on price, and downloadable today. The moat was never the model. It was always going to be distribution and trust.

🤔 Pushback

Benchmark numbers are still self-reported, and huge parameter counts do not always translate into real-world reliability or safety.

·MarkTechPost - Kimi K3 launch details·Simon Willison - Kimi K3 notes·VentureBeat - Largest open model