Weekly analysis of the fastest-growing SaaS & AI companies based on ARR Club milestones. This week's top performers include Kalshi, Bending Spoons, fonio.
Every week, ARR Club's analytics engine processes new revenue milestones to find the fastest-growing SaaS and AI companies in our database. Here is this week's Growth Velocity Leaderboard based on verified ARR milestones published over the past 7 days:
| Rank | Company | Growth Rate (CAGR) | ARR Trajectory |
|---|---|---|---|
| #1 | Kalshi |
+864x
annualized over 1.2 months
|
$2B → $4B |
| #2 | Bending Spoons |
+69x
annualized over 2.2 months
|
$1.3B → $2.8B |
| #3 | fonio |
+18x
annualized over 2.1 months
|
$6M → $10M |
| #4 | GojiberryAI |
+778%
annualized over 1.9 months
|
$3M → $4.2M |
| #5 | Decagon |
+660%
annualized over 13.6 months
|
$10M → $100M |
Note: CAGR (Compound Annual Growth Rate) is computed based on the linear time elapsed between the two most recent revenue milestones. Only companies with verified ARR updates in the past 7 days are considered for this recap.
Methodology
This research report is based on multiple data sources verified by ARR Club. We utilize a combination of official company announcements, public financial filings (S-1s, 10-Ks), verified press reports (TechCrunch, Bloomberg, Forbes), and founder-verified revenue milestones.
Growth rates are calculated using linear annualization between verified milestones. All data points are cross-referenced to ensure maximum accuracy within the constraints of public reporting for private entities.
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