About

Hi there! I’m Yanjun — I build things people love to use. Co-founder at Lessie AI, where we're building vertical AI Agents to solve real problems for niche industries. Before this, I've built social apps, games, and SaaS products over the years — and done a bit of everything along the way: product design, growth, content, hiring. Lately I'm basically living inside Claude Code and Codex. They're my most frequent collaborators now, honestly. Always happy to chat about AI, products, or anything interesting!

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Yanjun

9mo ago

Are Vertical AI Agents still worth building?

I recently came across some news:

Claude for Financial Services officially launched in mid-July. It s designed specifically for the finance industry, integrating data from platforms like PitchBook, Morningstar, Snowflake, S&P Global, and Databricks to support market research, due diligence, and investment decisions. During early testing, Claude Opus 4 hit 83% accuracy on complex Excel tasks.

It really makes me question how much room there is left for AI Agent startups ----LLMs are getting better at handling more and more tasks on their own.
For an AI Agent to have long-term value, it must be able to understand, remember, and adapt to a user's evolving preferences and context ---- something LLMs still struggle with due to their limited memory and continuity.

Yanjun

9mo ago

Hello hunters 👋

I m Yanjun an entrepreneur and AI enthusiast passionate about building AI-powered tools that help people and businesses grow smarter and faster.

I have years of experience in product management and growth strategy, having worked at Tencent and joined a 3D AI startup as a partner. My previous work with 3D AI focused on helping creators bring interactive experiences to life and that really shaped how I see the future of AI and creativity.

PRIYANKA MANDAL

10mo ago

💡 When is the right time to raise investment for a SaaS startup? 💰

Hey Product Hunt fam

Would love to hear your take on this,

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