Base44 Launches Base1: The $80M Wix Acquisition Now Trains Its Own AI Model for Vibe Coding

From $3 million to $150 million in annual revenue in under a year. Now, the company wants to own its brain. Base44, the vibe-coding platform Wix snapped up for $80 million in June 2025, just launched Base1, its first proprietary AI model.

What Base1 means for vibe coding

Base1 isn't built from scratch. The model is a fine-tuned open-source LLM trained on tens of millions of real user interactions across the Base44 platform. Reinforcement learning drives the training loop, and the ambition is clear: eventually outperform frontier models on app-creation tasks.

Until now, Base44 relied on OpenAI and Anthropic models via AWS. Founder Maor Shlomo says owning the model stack gives direct control over latency, inference costs, and output quality. When your biggest line item is compute, vertical integration stops being optional.

Base44's wild growth inside Wix

When Wix paid $80 million cash for an eight-person, six-month-old startup, skeptics raised eyebrows. Those eyebrows should be back down by now. Base44 grew revenue from $3 million to $150 million ARR within a year of the acquisition.

Wix now runs three AI-powered products: Harmony for website building, Vibe for headless development, and Base44 for full-stack app creation. The Wix data science team that built Harmony collaborated directly on Base1's development.

The vibe-coding battlefield in mid-2026

Base44 isn't operating in a vacuum. Swedish rival Lovable hit $400 million ARR by March. Cursor sits at a $29.3 billion valuation. Claude Code and OpenAI's Codex are muscling into the same territory from the foundation-model side.

The real threat might not be other vibe-coding startups at all. Frontier labs like Anthropic and SpaceX (which now owns both Cursor and xAI) are accumulating developer data at massive scale. Shlomo bets specialization wins: a model tuned for one job can beat a general giant on speed and cost. Whether that bet holds is the defining question for every AI startup built on someone else's models.

A signal for the entire AI startup stack

Base44's move forces a conversation the industry has been dodging. At what point must you own the intelligence that powers your product? Base1's answer: as soon as you have enough data to make the investment worthwhile. The next twelve months will tell us if narrow beats frontier, or if the big labs swallow the vibe-coding market whole.