Please refer to the tables in our earnings release on the investor relations portion of our website for a reconciliation of these measures to the most directly comparable GAAP financial measures. We generated total revenue of $695 million, up 27% year-over-year, beating the high end of the guidance by 4%. Top-line strength was driven by Atlas, which grew 29% year-over-year, crossing the $2 billion run rate mark for the first time and generating a record $114 million in net new revenue in the quarter. Non-Atlas grew 20% year-over-year, our best growth quarter in the last two years.
We delivered a non-GAAP operating margin of 23%, more than 100 basis points above the high end of guidance. While AI is not yet a material driver to our results, we are encouraged by the growth we are seeing with customers leveraging our AI capabilities. The number of customers leveraging Vector Search has nearly doubled year-over-year, and the number of customers using Voyage embedding models has also doubled since the acquisition last February. This growth is across a diverse range of customers, AI natives, digital natives, and large enterprises.
We finished fiscal 2026 on a high note, with strength in Q4 driven by our continued go-to-market execution and the broad-based demand we have seen across the business. Our teams generated record new ARR in Q4, an acceleration of that metric in fiscal 2026. Our EMEA team had an especially strong Q4, generating record new ARR driven by wins at major financial institutions, large retailers, and leading tech companies. We outperform on operating margin, achieving above our Rule of 40 performance and demonstrating that we can drive durable revenue growth while simultaneously expanding margin.
| Metric | Period | Current guidance |
|---|---|---|
| Long-term financial model | FY2027 / medium-term | reiterated: Atlas >20% growth, Rule of 40 company, high-teens total revenue growth (reiterated) |
| Q1 and full-year revenue and margin | Q1 / FY2027 | strong guidance across Atlas and non-Atlas, continued margin expansion |
| Metric | YoY | Note |
|---|---|---|
| Total revenue | +27% | Top-line strength driven by Atlas, beating the high end of guidance by 4%. |
| Atlas revenue | +29% | Strength with largest customers in North America and Europe and growth of new and existing applications; would have been ~30% absent a large bundled deal attributed more to EA. |
| Non-Atlas revenue | +20% | Strong multi-year revenue from financial services, public sector, and technology customers building long-term; best growth quarter in two years. |
| Non-Atlas ARR | +13% | Momentum from customers committing to MongoDB long-term for mission-critical applications. |
| Operating margin | 23% vs 21% | Benefited entirely from revenue outperformance. |
| Net ARR expansion rate | 121% vs 119% a year ago | Success with existing customers. |
| $1M+ ARR customers | +26% | 402 customers with at least $1 million in ARR, with ARR growing even faster. |
| Topic | Previous mention | Current period | Trend |
|---|---|---|---|
| Atlas scale | approaching $2 billion business | crossed $2 billion run rate for the first time, record $114 million net new revenue | Improving |
| EA / on-premises importance | non-Atlas single-digit ARR growth concerns | renewed strategic importance of on-prem in regulated industries; largest TCV deal in company history; investing to bring EA to parity with Atlas | Improving |
| AI adoption metrics | encouraging but early | Vector Search customers nearly doubled YoY, Voyage embedding customers doubled since acquisition; AI not yet material to results | Improving/early |
| Atlas-EA bundling | routine bundle deals | one exceptionally large bundled deal shifted revenue attribution to EA, lowering reported Atlas growth | Noted |
| Go-to-market leadership | stable team | Erica appointed Chief Customer Officer; CRO search ongoing with Paul transitioning through Q1/Q2 | Transition |
| Enterprise agentic AI in production | many pilots | still early; few customer-facing agents at scale; not expected to move the needle yet but seen as inevitable | Stable/early |