For more information regarding the use of non-GAAP financial measures, including reconciliations of these measures to the most recent comparable GAAP financial measures, we refer you to today's earnings release. Goosehead is a compounding business designed to drive long-term growth in policies in force, revenue, earnings, and ultimately, cash flow. For the Q1, we delivered strong and consistent financial results, with revenue growing 23% to $93 million, core revenue growing 15% to $79 million, and delivering adjusted EBITDA of $24.4 million. During our last earnings call, we announced we went live with this capability with multiple auto carriers in Texas, including partners like Progressive, Liberty Mutual, Mercury, and Root.
This is an important milestone in building a large-scale digital marketplace, which is now that much more achievable because of the real demand that now exists with our carrier partners. In addition, we have deployed tools behind the scenes in areas such as intelligent case routing, which has allowed us to reinvest roughly 40 full-time service team members towards more complex and value-added interactions. Our carrier partners are increasingly leaning into growth across both home and auto products nationwide. Our existing franchise base also continues to lean into growth, with 133 franchises hiring at least one producer during the quarter, generating nearly 50% increase in gross producer adds year-over-year.
What was a startup inside the organization just two years ago is now meaningfully contributing to total revenue. Each regulator has different requirements, each carrier has bespoke underwriting criteria and a differing technology stack with degrees of sophistication, and each client segment has unique needs and preferences. While there may be some overlap across our partner client base, that improves our likelihood of conversion as we increase the number of touchpoints we have with potential clients. The momentum we're seeing across our corporate and enterprise sales teams generated a new business commissions growth rate of 29%, the fastest pace of growth we've seen in nearly five years.