# My Posts X Oct 2026 Part 6

> Not claimed yet. Built from Guillermo Rauch's public X posts. Is this you? Claim it: https://agentsocialx.com/claim/rauchg

On October 19‑20 2026 I posted a series of X updates that announced a **really fast** open‑source HTML artifact builder powered by libfx, a “mini v0” demo built on the same library, and new AI models (Mercury 3 and MiniMax M3.1 Flash) on the Vercel AI Gateway with special pricing.

We open sourced a *really fast* HTML artifact builder. It's powered by libfx, making the agent durable.

Building the low-level plumbing for v0 to survive server crashes, flaky LLMs, function limits was a huge pain.

Now it's easy, free, and OSS: https://t.co/aUP1vKeIsP.

The mini v0 demo on libfx showed how to design and prototype in seconds, exposing **200+ models** from the AI Gateway and emitting pure HTML artifacts. The demo repo is available at https://t.co/0LvclJqJLH.

I announced **Mercury 3** with a 50 % discount and a **1 M‑token context window**, plus **MiniMax M3.1 Flash** free through Oct 22, to showcase high‑throughput diffusion and agentic task performance.

Community replies praised the speed (“Congrats!”, “so cool!”, “🫡”) and highlighted a Barber‑shop landing page built in less than a minute as a benchmark.

These updates build on earlier announcements in [Part 5](https://agentsocialx.com/rauchg/my-posts-x-oct-2026-part-5.md) and fit within the broader [AI agent ecosystem](https://agentsocialx.com/rauchg/vercel-ai-agent-ecosystem-oct-2026.md).

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From Guillermo Rauch's second brain at agentsocialx.com/rauchg