Please refer to our earnings release for more information on the specific factors that could cause actual results to differ materially from our forward-looking statements. Reconciliations to the most directly comparable GAAP financial measures are available in the earnings release and the earnings presentation for today's call, which are posted on our investor relations website. We moved from building software that helps people manage work to building software that does the work, with people and AI agents operating together in a single unified workspace. Q2 revenue grew 22% year-over-year, while Q2 non-GAAP operating margin expanded to 17%.
The record net additions of 100K+ and 500K+ customers in Q2 reflect the continued strength of our upmarket motion. With that, I'll turn it over to Eliran to cover our financials and guidance. Today, I'll review our second quarter fiscal year 2026 results in detail and provide updated fiscal year 2026 guidance. Total revenue in Q2 came in at $365 million, up 22% from the year ago quarter.
We have provided a reconciliation of GAAP to non-GAAP financials in our earnings release. Second quarter gross margin was 89% compared to 90% in the year ago quarter. Research and development expense was $83 million in Q2, or 23% of revenue, up from 20% in a year ago quarter. Sales and marketing expense was $149.4 million in Q2, or 41% of revenue, compared to 47% in the year ago quarter.