# v0 adds open-weight models, starting with Kimi K3

By Steven Van · 2026-07-29

Moonshot AI's 2.8-trillion-parameter model is now selectable in v0.app alongside v0's closed frontier options.

[v0](<https://creatorstoolbox.com/tools/v0>) now supports open-weight models, a new category alongside the closed frontier models it's offered so far. The first model in is **Kimi K3** from Moonshot AI, available now at v0.app/?kimi3.

[Source post](https://x.com/i/status/2082525562073931969)

## Why Kimi K3 is a notable first pick

Kimi K3 isn't a token open-source gesture, it's currently the largest open-weight model publicly available: a 2.8-trillion-parameter mixture-of-experts model from Beijing-based Moonshot AI, natively multimodal with a 1-million-token context window. In blind developer testing on Arena's Frontend Code evaluation, K3 ranked first, ahead of [Claude Fable 5](<https://creatorstoolbox.com/tools/claude>), and Moonshot reports frontier-level performance across coding, agentic, reasoning, and knowledge tasks more broadly, trailing Fable 5 and GPT-5.6 Sol only slightly overall. For a UI-generation tool like v0, strong frontend coding performance is exactly the benchmark that matters most.

## What 'open-weight' changes for v0 users

Open-weight models can be inspected, fine-tuned, and in principle self-hosted, a different cost and trust profile than a closed API-only model. For v0, adding an open-weight option means users get a genuinely competitive alternative to closed frontier models without the licensing and pricing structure that comes with them, generally cheaper to run given the model can be served more flexibly than a proprietary one.

## Part of a broader open-weight moment

Kimi K3's release fits a wider trend of Chinese labs pushing frontier-capable open-weight models as U.S. compute restrictions push a different strategy: give away the weights, compete on adoption instead of API margin. v0 picking Kimi K3 as its first open-weight model is a signal that these releases are now good enough to sit next to closed frontier models in a mainstream coding tool's model picker, not just a research curiosity.

![v0](<https://www.google.com/s2/favicons?domain=v0.dev&sz=128>)

v0

AI-powered UI generation tool by Vercel that turns prompts into React components and full applications.

[View v0 →](<https://creatorstoolbox.com/tools/v0>)

Sources

[v0 on X](<https://x.com/v0/status/2082525562073931969>), [Tom's Hardware](<https://www.tomshardware.com/tech-industry/artificial-intelligence/moonshot-releases-2-8-trillion-parameter-kimi-k3>).

[Read v0 adds open-weight models, starting with Kimi K3 on Creators Toolbox](<https://creatorstoolbox.com/blog/v0-open-weight-models-kimi-k3>)

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Canonical source: https://creatorstoolbox.com/blog/v0-open-weight-models-kimi-k3