Good afternoon and welcome to Klaviyo's Q4 and full year fiscal 2024 earnings conference call. Today's conference is being recorded. All lines have been placed on mute to prevent any background noise. After the speaker's remarks, there will be a question-and-answer session. If you would like to ask a question during this time, simply press the star key followed by the number one on your telephone keypad. If you would like to withdraw your question, press star one again. With that, I would like to turn the call over to Andrew Zilli, Vice President of Investor Relations. Please go ahead.
Thanks. Good afternoon and thanks for joining Klaviyo's Q4 and full year 2024 earnings call. Our earnings press release, SEC filings, and a replay of today's call can be found on our IR website at investors.klaviyo.com. With me today on the call are Andrew Bialecki, Co-founder and CEO, and Amanda Whalen, CFO. As a reminder, our commentary today will include non-GAAP measures. Reconciliations to the most directly comparable GAAP measures can be found in today's earnings press release or earnings release supplemental materials, which can be found on our investor relations website.
Additionally, some of our comments today contain forward-looking statements that are subject to risks, uncertainties, and assumptions, which could change. Should any of these risks materialize, or should our assumptions prove to be incorrect, actual company results could differ materially from these forward-looking statements.
A description of these risks, uncertainties, and assumptions, and other factors that could affect our financial results are included in our SEC filings, including our most recent annual report on Form 10-K filed today. We do not undertake any responsibility to update these forward-looking statements except as required by law. With that, I'll now turn it over to Andrew.
Thanks Zilli and thanks to everyone for joining us today. At Klaviyo, we empower more than 167,000 brands around the world to leverage their data to build personalized, lasting, and valuable consumer relationships across multiple channels. Our 2024 financial performance is a clear indication of our importance in driving revenue for our customers.
We had a very strong finish to the year with $270 million in Q4 revenue, up 34% year- over- year, crossing a $1 billion revenue run rate as we delivered our strongest Black Friday Cyber Monday yet. For the full year, we grew our revenue by 34% to $937 million while driving nearly $150 million in free cash flow. I want to thank our partners and Klaviyans around the world for supporting our customers throughout the year, and thanks to all of our customers for choosing Klaviyo to help grow your business.
Before sharing highlights from the year, I want to touch on three defining themes for Klaviyo. First, we are a growth company, and we are executing well on our strategy to deliver sustainable, efficient, long-term growth by moving up market, expanding internationally, adding more customers, and growing with our existing customers. Second, our approach to data with the powerful Klaviyo Data Platform is a core differentiator and the backbone of our vertically integrated omnichannel platform that positions Klaviyo as a single source of truth for customers.
And third, consumer expectations are shifting, and our data-first approach puts Klaviyo in an exceptional position to redefine the next era of consumer engagement. Now, turning to 2024 highlights, we continue to innovate and expand the capabilities of our platform, and our pace of innovation is a key driver of why companies continue to choose Klaviyo.
Across the company, our teams delivered more than 200 new features to help make our customers more successful and set Klaviyo apart in the market. On our marketing automation platform, we made it easier for marketers to get their jobs done faster with scheduled flows and automated campaign follow-ups. We launched a campaigns library and expanded our suite of AI functionality with features like Text AI and Email AI to inspire creativity and make it easier to create content.
A nd we made SMS audience acquisition more effective by using one-time codes with SMS Smart Opt-in forms. S peaking of SMS, we now have SMS coverage in 19 countries, great progress in helping our customers reach their consumers around the globe. We also enhanced our platform's next-generation analytics capabilities with tools like product analysis to empower marketers with real-time insights that optimize merchandising strategies and post-purchase outreach.
We launched the RFM Action Center, which uses recency, frequency, and monetary value analysis to provide actionable recommendations for retention, repeat purchases, and loyalty. These expanded analytics capabilities help customers address the challenges of fragmented data and disconnected tools and more efficiently put their data to work. Growing our presence internationally remains a top priority for Klaviyo, and we made great progress in 2024.
We made our platform and customer help center available in six additional languages while launching local language websites and marketing efforts in certain regions. We hosted our Klaviyo London event, continued expanding our team in Europe, and recently opened up a new Dublin office where w e will build out a larger presence going forward. Ecosystem-led growth through strong partners and integration is key to our success, and our partnership team continues to drive great results.
We launched a number of new integrations with companies like Canva, Pinterest, Toast, and others, and added features like the Universal Content API to make it even easier for partners to work with Klaviyo. We also held our first in-person Partner Advisory Council, bringing together leaders from across our partner ecosystem to discuss and gather feedback on our 2025 strategy, evolution of the platform, and roadmaps to take us forward.
And as we announced a few weeks ago, we signed a great partnership with Woo, making Klaviyo the preferred marketing automation partner for WooCommerce, replacing an older newsletter software. With Klaviyo's built-in data platform and WooCommerce's flexibility, our joint customers have everything they need to build direct connections with their consumers and thrive in a competitive commerce landscape.
This partnership represents an important step in our expansion internationally into new markets in retail and beyond retail to support a diverse range of businesses, from content creators to web developers who are fostering communities and delivering value in unique ways. Companies of all sizes are coming to Klaviyo, whether a brand new business or a large established brand needing to modernize and consolidate their tech stack.