Wix (WIX) Base44 AI App Builder: 58% Gross Margin, ~$250M ARR

Wix.com (WIX) disclosed standalone operating figures for Base44, its AI app-building platform, for the first time on its third-quarter 2026 earnings call on 2026-11-10. Base44 posted a 58% non-GAAP gross margin in the quarter and annualized recurring revenue approaching $250 million, though that margin still sits below the company-wide level[1].

What Base44 is and where it sits in Wix

Wix.com Ltd. (WIX) is an Israel-based website-building platform. Individuals, small businesses and design agencies use it to build websites, online stores and booking systems. The company earns most of its money from premium subscriptions, plus revenue from business services such as payments.

Base44 is the AI app-building platform Wix sells to customers. Management describes it as vibe coding, meaning AI writes software through conversation: entrepreneurs and professional developers describe what they need in everyday language, and the platform uses conversational and agentic coding to generate, edit and launch working web or mobile apps. Users pay by subscription, mostly billed monthly. By default the platform runs generation tasks on Base 1, a model Wix built in-house, and users stay on that model unless they switch[1]. Within Wix, Base44 is a core product that earns revenue directly, extending the customer base from website building into software development.

How Base44 developed across three earnings calls

The product's path became clearer over three earnings calls.

• On 2026-03-04, management named Base44 the second new pillar of its strategy alongside Wix Harmony, calling it a leading vibe coding platform that takes Wix into the much larger software-creation market. It gave no operating figures at the time[2].
• On 2026-08-04, the company said Base44's contribution to the partner segment stepped up in the second quarter as professional developers used AI and AI agents in their workflows and added software creation to the work they take on. That showed the product had entered paid professional workflows, but the disclosure was still qualitative[3].
• On 2026-11-10, how customers use the product had not changed. What changed was scale and cost structure: Base44 reported its own revenue and gross margin figures for the first time, and it now runs on the in-house model by default[1].

Base44 ARR and gross margin in the third quarter

This quarter's figures center on revenue scale and gross margin. Management said Base44's annualized recurring revenue is approaching $250 million, ahead of what it expected at the start of the quarter. Base44's non-GAAP gross margin was 58% in the third quarter. The CFO expects a higher margin in the fourth quarter and about 60% for the second half of the year[1].

Annualized recurring revenue converts current subscriptions into an annual run rate; it is not recognized revenue. Base44 subscriptions are mostly monthly. In the latest cohort of new subscribers, annual plans made up more than 20%, compared with about 5% in the same cohort a year earlier[1].

The margin gain came mainly from compute costs. Most users now run on Base 1 by default, and AI costs for free users fell more than 50% quarter over quarter in the third quarter. The company attributed that decline both to moving more traffic to Base 1 and to broader optimization work, and it did not split out how much each contributed[1].

How the in-house model reaches Wix's gross margin

The effect shows up mainly in Wix's non-GAAP gross margin, through AI compute spending in cost of revenue. The CFO said company-wide non-GAAP gross margin was 69% in the third quarter, up 2 percentage points from the prior quarter, because Base 1 delivered a full quarter of efficiency[1].

The larger Base44's share of subscription revenue, the more its margin will drive the company-wide figure. At 58%, Base44's margin is still below Wix's overall 69%. Whether Base 1 can keep lowering compute cost per user therefore determines whether Base44's growth dilutes or supports the company's gross margin. The company expects AI costs across all free and paid users in the second half to stay below 30% of total bookings[1].

The attribution has limits:

• Company-wide gross margin of 69% was flat with the same quarter a year earlier.
• Base44 revenue is not broken out as a separate line in the financial statements.
• Faster investment in Base44 led the company to cut its full-year free cash flow margin guidance, excluding acquisition and restructuring costs, from the high teens to about 16%.
• Prepaying for GPUs to run models over the next few years will create a working-capital headwind of about $10 million in the fourth quarter[1].

What is confirmed and what remains unquantified

What can be confirmed: Base44 is now a Wix AI business with its own revenue and gross margin figures, and the in-house model is lowering its compute costs and lifted the company's gross margin in the third quarter.

What has not been quantified separately: how much of the cost decline comes from Base 1, how much Base44 revenue actually contributes to the company's reported results, and when the added marketing and compute spending will stop weighing on cash flow. Whether Base44's fourth-quarter gross margin rises above 58%, as management expects, is the next figure that tests whether the business is converging toward the company-wide margin.

AI application assessment

• Wix AI Application Creation | Business position: core business | Deployment stage: limited production | Scope: single business unit | Value type: revenue growth

Sources

[1] Drillr · Wix.com Ltd. (WIX) · 2026-11-10 · Earnings call

"Our non-GAAP gross margin for base 44 was 58% in the third quarter, and I currently expect an even higher margin in the fourth quarter."

[2] Drillr · Wix.com Ltd. (WIX) · 2026-03-04 · Earnings call

"We believe Wix Harmony has the potential to fundamentally reshape how individuals and small businesses build and scale online not just on wix but across the internet as it becomes increasingly ai driven over time we plan to gradually make harmony the default experience for new and existing users and evolution we anticipate will drive meaningful long-term impact across conversion engagement retention and monetization the second new pillar of our strategy is base44 our leading vibe coding platform that expands our reach into the vast world of software creation and significantly grows our TAM."

[3] Drillr · Wix.com Ltd. (WIX) · 2026-08-04 · Earnings call

"We saw a step-up in Base44 contribution to the partner segment in the second quarter as professionals increasingly leveraged AI and AI agents in their workflows and expanded their pipelines to include software creation."