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Aleph Lab

AI language buddy in the games kids love

An AI companion that chats and plays with children inside games like Minecraft, helping them learn a new language while they play. Kids already spend hours each week in their favorite games, and now parents can turn that game time into learning time.
Active Founders
Han Nim (Joseph) Jang
Han Nim (Joseph) Jang
CEO & Co-Founder
CEO & Co-Founder at Aleph Lab. Spent the last 2 years as a PM at Intuit, leading voice AI products. MBA from Duke.
Dan Han
Dan Han
Co-Founder
Co-Founder at Aleph Lab. 2x founder. CS at Seoul National.
Jaihee Kim
Jaihee Kim
Co-Founder
Co-Founder at Aleph Lab. Spent the last 6 years as an ML engineer at Google and YouTube. MS in ML from UC San Diego.
Company Launches
Aleph Kids — Your Child’s AI Language Buddy 🧑‍🎓
See original launch post

Hey everyone! We’re Joseph, Minjae, Jaihee, and Dan, co-founders of Aleph Lab.

We’re building your child’s AI language buddy in the games they already love, helping your child learn a new language while they play—think of it as Duolingo inside Minecraft.

https://youtu.be/d6zcIRppOQk

❌ The problem

1. Children on average play video games for 4+hrs/week. Many parents feel guilty about the screen time and worry that their kids aren’t being productive.

2. Many parents want their children to learn a new language, but it’s challenging to have their kids sit through even a 30-minute class because it’s boring. Private native speaker tutors are expensive, costing at least $35/hr.

👷Our solution

We turn games into real language learning by bringing Annie inside Minecraft who secretly teaches.

Here’s a video of Emily, our customer, playing with Annie.

Ask: If you’re a parent or know one with a child learning English, start learning in Aleph kids today: https://alephlab.ai/

https://youtu.be/hAW5eWn4qhA

  • Annie’s now taught over 2,000 sessions.
  • Many kids improved by more than a grade level in just five sessions.
  • We even convinced families to buy Minecraft for $30 to learn in Aleph Kids.

Pedagogy: Annie prompts kids to speak hundreds of words and absorb new vocabulary, and corrects their grammar in real time, helping them improve every time they play.

Beginner-friendliness: We provide real-time transcriptions of Annie’s speech to help beginners understand Annie and refer to sample responses to know what to say next.

Curriculum: We offer a variety of modules (custom maps with scenarios) where children can practice speaking across different situations.

Safety: Learning happens on a private server, where kids play safely with Annie, free from random strangers or unfiltered chats. Annie also speaks in a child-friendly tone.

🙏 Our Ask

We’d love intros to:

  • Language experts or ESL teachers who can help us design our language curriculum.
  • Minecraft content creators who love sharing fun gameplay.
  • Minecraft builders or builder communities interested in building custom maps.
  • Animators or creative studios that can help us make animations of Annie

👉 Contact us at contact@alephlab.ai

👬 The Team

All four of us are immigrants who know how hard it is to learn a new language. To help kids facing the same challenge, we tutored English for years. It was hard to keep kids engaged with flashcards and textbooks. But, when we joined them in Minecraft and spoke only in English, they naturally absorbed new words and phrases.

This was our “aha” moment that led us to build Annie. She’s better than us at English and Minecraft, and is always available. Kids even say they’d rather play with Annie than us, so we’re on a mission to bring Annie to children around the world.

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Aleph Lab
Founded:2025
Batch:Fall 2025
Team Size:3
Status:
Active
Location:San Francisco
Primary Partner:Garry Tan