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Built to Share: 2M Users in 18 Months | Julius AI, Rahul Sonwalkar

This episode features Rahul Sonwalkar, founder and CEO of Julius AI – the leading AI data analysis platform. Since launching in 2023, Julius AI has helped users create over 10 million data visualizations. Every day, Julius AI generates more than 4 million lines of analysis code – far more than any team of human data scientists could produce. In just 18 months, Julius AI has grown to over 2 million users. In this interview, Rahul Sonwalkar shares the 5 essential rules every AI startup should consider. He emphasizes the importance of focusing on a single task, moving fast, and embracing failure – especially for startups. Discover why Rahul believes in these principles and how they shaped his journey by watching the full episode. 00:00 Intro 00:45 About Julius AI 01:17 Rule No.1 Focus on only one task 02:51 Rule No.2 Solve daily problems that matter 04:22 Rule No.3 One ‘NO’ kills an idea 06:08 Rule No.4 Failing Fast 07:46 Rule No.5 Build products people share EO stands for Entrepreneurship & Opportunities. As we're looking to feature more inspiring stories of entrepreneurs all over the world, don't hesitate to contact us at partner@eoeoeo.net X | @eostudi0 LinkedIn | @EO STUDIO Instagram | @eostudio.official Newsletter | https://www.eomag.io/subscribe?utm_source=youtube&utm_medium=description

Rahul Sonwalkarguest
Jul 3, 20259mWatch on YouTube ↗

CHAPTERS

  1. 0:00 – 0:30

    Quitting the job: fear as fuel and going all-in

    Rahul recounts quitting his job and spending 18 months before launching Julius, describing the fear and pressure that come with burning the boats. He frames discomfort as a catalyst for sharper thinking and risk-taking versus complacency.

    • Took ~18 months from quitting to launching Julius
    • Fear and uncertainty can sharpen execution
    • Comfort can create complacency and self-delusion
    • Going all-in forces faster learning and bolder bets
  2. 0:30 – 1:00

    What Julius AI does—and the scale of its early traction

    Rahul defines Julius as an AI data analyst that generates insights, charts, and visualizations from user data in seconds. He highlights the product’s usage metrics and growth to 2M users as proof of strong product-market fit.

    • Julius turns datasets into insights and visualizations quickly
    • Users created 10M+ visualizations since 2023 launch
    • Product generates ~4M lines of analysis code daily
    • Reached ~2M users in ~18 months
  3. 1:00 – 1:30

    Rule #1: Win with focus—build a specialist, not a generalist

    He argues startups’ key advantage is focus and advises against building general-purpose tools. Julius succeeds by going deeper on data analysis than broad assistants like ChatGPT.

    • Startups compete via focus, not breadth
    • General tools deliver weaker data-analysis workflows
    • Depth and specialization create a defensible experience
    • Positioning vs incumbents matters less than user value
  4. 1:30 – 2:00

    Why ChatGPT falls short for real analysis—and why users switch

    Rahul explains the practical pain points users hit when trying to analyze real datasets in ChatGPT: shallow insights, poor charting, and weak collaboration. Those gaps push users to search for dedicated tools like Julius.

    • ChatGPT struggles with ‘real’ data analysis depth
    • Charts/visuals aren’t good enough for work output
    • Lack of collaboration becomes a blocker for teams
    • Users discover Julius via search after hitting limits
  5. 2:00 – 3:01

    The ‘specialist hire’ analogy and skepticism about ‘platform killed my startup’ narratives

    He compares AI tools to hiring: you don’t hire one person to do everything when you need expert-level output. He also downplays the idea that large platforms automatically kill startups if the startup is best at solving a real user problem.

    • Specialist agents can outperform general assistants on key tasks
    • ‘Big company killed your startup’ is often overblown
    • Users care about outcomes more than competitive narratives
    • Doing one job best can be a durable wedge
  6. 3:01 – 4:02

    Early product lesson from hackathons: speed matters, but retention matters more

    Rahul shares his college hackathon experience that led to building Waterview, a managed backend/database service. While it solved a real setup pain, users didn’t return because the need wasn’t frequent.

    • Hackathons exposed wasted time on backend setup
    • Waterview offered out-of-the-box backend infrastructure
    • Adoption happened, but projects were weekend-only
    • A solved pain isn’t enough if it’s not recurring
  7. 4:02 – 4:32

    Rule #2: Solve a daily/weekly problem—or users won’t retain

    He distills Waterview’s failure into a product principle: retention requires solving problems that repeat often. Infrequent needs (monthly/annual) don’t build habits or ongoing value.

    • Retention depends on problem frequency
    • Right solution + wrong cadence still fails
    • Habit-forming value is critical for product growth
    • Waterview’s failure became a key founder lesson
  8. 4:32 – 5:03

    Rule #3: ‘One NO kills an idea’ inside big companies—startups run on a single YES

    Rahul contrasts innovation dynamics in large companies versus startups. In big orgs, one veto can stop progress; in startups, one customer ‘yes’ can validate and propel the business.

    • Big-company ideas require many approvals
    • A single stakeholder can veto progress
    • Startups can survive many ‘no’s if one customer says ‘yes’
    • Customer validation is the real gate in early-stage building
  9. 5:03 – 6:04

    Uber commuter product story: solving sporadic usage—and how lack of buy-in killed it

    He describes an Uber initiative to increase daily/weekly usage with a commuter package integrating multiple Uber offerings for employees. Despite cross-functional momentum, engineering leadership didn’t approve, and the idea died—reinforcing his ‘one no’ lesson.

    • Uber rides are often tied to sporadic events (airports, nights out)
    • Goal: create a commuter package for regular usage
    • Cross-functional support wasn’t enough without eng leadership
    • The experience helped motivate leaving to explore ideas
  10. 6:04 – 6:34

    Rule #4: Failing fast by shipping early and learning in public

    Rahul argues founders often wait too long due to fear, while Julius ships features when they’re barely working to collect real feedback. He frames failure as information that clarifies what to build next.

    • Launch early to get real user feedback
    • Don’t hide ideas—test them in the market
    • Failure reveals what doesn’t work sooner
    • Speed of iteration beats perfectionism
  11. 6:34 – 7:35

    HoopsGPT/NBA GPT: a rapid experiment that revealed the wrong user segment

    He shares a two-week sprint to launch an NBA data Q&A product before the season ended, prioritizing time-to-test. The experiment showed mainstream sports fans weren’t data-driven, and the most interested segment was bettors—not the target audience.

    • Built and shipped a full UI + querying engine in ~2 weeks
    • Timing mattered (seasonality) so waiting would waste the test
    • Learned sports fans weren’t the right fit for data insights
    • Found betting-heavy users weren’t a segment they wanted to serve
  12. 7:35 – 9:09

    Rule #5: Build something people share—surviving the plugin shutdown and finding word-of-mouth growth

    After OpenAI shut down the ChatGPT plugin store—Julius’s main acquisition channel—Rahul’s team had to rethink growth quickly. They realized insights naturally want to be shared, so they built sharing into the product to turn users into champions.

    • Early growth depended heavily on ChatGPT’s plugin store
    • Plugin shutdown created an existential acquisition shock
    • Data insights are inherently social within teams
    • Building sharing loops enabled word-of-mouth growth
  13. 9:09 – 9:59

    No regrets: missteps as data and why he wouldn’t change the journey

    Rahul closes by saying he wouldn’t do anything differently because failed features and wrong bets provided essential learning. He emphasizes that only learning from successes skews decision-making; knowing what doesn’t work is equally valuable.

    • Missteps produced valuable lessons and product clarity
    • Failures generate unbiased data about what not to do
    • Experimentation breadth reduces blind spots
    • He’d repeat the same process if starting again

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