Codédex Update - Q4 2025

250K to 1.5M users. Year of the Horse. 🥳

Author

Sonny Li
January 19, 2026

Hi Codédex Investor community,

Happy New Year! 🥳

2025 was a breakout year for Codédex. After the whole team took two weeks off to recharge, we wanted to share a recap of what we shipped in October - December.

We are not fundraising, but a few investors reached out so thought I’d share an update.

Let's get into it.

💡 Note: It’s been a minute. We skipped Q3 2025 investor update because things have been well! If you want, you can read our Q3 blog post.

Key Metrics

Our numbers on 1/1/2026:

  • Total Registered Users: 1,495,250 (+503% YoY)

  • MRR: $70,605 (+676% YoY)

  • MR: $81,507 (+555% YoY)

  • Net Burn: -$6,917 (nice)

# 👩‍🎤 Character Customization

Change your hair. Pick your fit. Choose your vibe. Character customization is live! 🎨

This has been one of our most requested features for years, and we finally shipped it. You can now personalize your Codédex character with 7 skin tones, 3 hairstyles x 10 colors, 4 outfits x 5 colors. That's 33,600 possible combinations and it's just the start. This lays the foundation for microtransactions, item drops, and Club-exclusive cosmetics. Read Dharma's blog post on it.

Update your character today via User Dashboard → "Edit".

# 🧚 Lumi - Full Page Experience

Since introducing Lumi, our in‑course AI companion, on September 25th, something wild happened. In just three months, Lumi answered 542,046 questions! 🤯 That absolutely blew past our expectations. So we gave Lumi the space it deserved.

We launched a full-page Lumi experience and added:

  • A dedicated Lumi landing page (when logged out)

  • One-click access from the global Practice tab

  • A left sidebar for saved conversations

# 💅 Redesigns x 3

Q4 was about wrapping things up: migrating last few pages to the new design system.

## User Profile Redesign

I have more followers on Codédex than my Instagram now lol.

Imagine if Twitter, LinkedIn, and GitHub had a baby. We redesigned User Profiles to better showcase you and moved your character, #30NitesOfCode pets, Achievement badges, Skills, Certificates to the right sidebar.

## Blog Redesign

This one was overdue. We've been pumping out content more consistently – product updates, a day in the life, technical resources, etc. – and launching new series like Learner Stories, the blog needed some love. With the redesign, we shipped a cleaner reading experience, comments (yes, finally!), search and better navigation, support for block quotes and richer formatting.

We’re also opening the door for more community contributors (Vishalya, Sophie, Nick). 👀

## Project Tutorial Redesign

Project tutorials also got a revamp to make the catalog feel less overwhelming with more visual heirarchy. We revamped the prereqs/versions, right sidebar and rolled out a commenting system.

# 📈 Subscriber Retention

As of Q4, ~60% of Clubbers stay subscribed after 3 months. 

EdTech tend to see much lower retention than media or traditional SaaS but some of the most retentive products are games... classic MMO, live services, and mobile games. To anchor this, Disney+ & Hulu bundle's 3 month retention is 80% and Netflix is 74%. So we know what the bar is. Let’s keep pushing this higher and higher.

# 🕹️ Game Jam 2025

We wrapped up the year by hosting our first‑ever Game Jam. Coming off the launch of our new Game Dev courses (Lua & Phaser), we honestly didn’t know what to expect. What we got completely floored us. The creativity, storytelling, and heart in these submissions were unreal. Definitely check out what our learners built!

🏆 The winners were:

GGWP. We’ll be helping select winners produce game trailers and launch their titles!

# Changelog - Q4 2025

Product

Curriculum

Community

Others

  • 🎫 Resolved 2,435 support tickets.

  • 🤠 Team attended HackUTD in Dallas, TX.

  • 🛌 Team took two weeks off for the holidays.

# 2026: The Year of Horse

2026 is our year. We're starting off by focusing on curriculum depth and breadth. Then, we move into some very big opportunities later this year where we take the platform to a whole new level. We have FIVE major areas that we want to bet on. Can’t say much.

Lastly, it’s Year of the Horse. And I’m a horse. That comes around once every 12 years.

Feeling it. ❤️‍🔥

Sonny

P.S. Here are a few more things to check out: