Luke Tchang

@replit | past lives in crypto and @stanford

[Luke Tchang @luketchang]

Luna is the Opus 4.5 moment but for cost instead of capabilities. The things you can do practically for free now are incredible.

[Replit ⠕ @Replit]

Replit Free Mode, powered by @OpenAI GPT-5.6 Luna.

Let’s make intelligence accessible to everyone.

[Luke Tchang @luketchang]

@hone Congrats @moritz_stephan and @rakesh_nori!

[Replit ⠕ @Replit]

Introducing Replit Design.

The next era of design, for everyone.

[Luke Tchang @luketchang]

There's moments where you try something new and immediately know "there's no going back." None were clearer than what's described in this post.

[Amjad Masad @amasad]

https://t.co/9ujCmLs3lQ

[Amjad Masad @amasad]

Something strange happened at Replit in the past six months.

The same engineers 3x’d output. Support resolved its hardest tickets 60% faster. Anyone could suddenly query the business like an analyst.

We’re seeing a new kind of organization: the self-driving company.

[girish @googrish]

“don’t train your own model” is common ai advice. it's wrong. your token bill's the proof.

today, we’re excited to launch castform into open preview. castform is the easiest way for you to train your own model, on your own data.

open-weights models are performant and much cheaper. when trained on your task & proprietary data, they beat closed models. the thing standing between you and that was weeks of plumbing & years of ml expertise.

with castform, model training is as simple as prompt engineering. @castformai

bring your agent traces or raw corpora. castform turns it into training data, picks the right algorithmic recipes, manages gpus, and gives you an ide to watch and chat with your model as it learns.

see what you can build with castform👇

[Replit ⠕ @Replit]

Meet Replit Security Agent - providing comprehensive app security reviews in minutes

And you get $5 in credits to try it for a limited time

Security Agent’s hybrid static analysis and AI-scanning approach is first of its kind:
- Acts on custom threat model to review full codebase
- Resolves vulnerabilities in parallel using background tasks
- Reduces false positives by 90%

Powered by @semgrep + @HoundDogAI. Keep vibe coding safely 🔒

[Luke Tchang @luketchang]

Everyone ends up rolling their own setup for RL observability tooling, but this makes life much easier

[girish @googrish]

agents are expensive because you're paying a generalist to do your specific task.

we built the easiest way to turn your production traces into a small, fine-tuned model that does it for a fraction of the cost.

dm for beta access

[Samuel Spitz @samuel_spitz]

Introducing Replit Ad Maker

Generate scroll stopping ads in minutes with AI

[Luke Tchang @luketchang]

What stands out about Replit is the team's ability to make very large bets very frequently, only way to do it

[Amjad Masad @amasad]

Software isn’t merely technical work anymore. It’s creative.

Introducing Replit Agent 4. The first AI built for creative collaboration between humans and agents.

Design on an infinite canvas, work with your team, run parallel agents, and ship working apps, sites, slides & more.

[Amjad Masad @amasad]

We’ve raised $400M at a $9B valuation.

Investors include Georgian, G Squared, Prysm, 1789, YC, Coatue, a16z, Craft, and QIA, with strategic investments from Accenture, Databricks, Okta, and Tether. We’re also lucky to have incredible individuals backing us, including Shaq and Jared Leto.

This funding will help us scale our ambition and expand beyond coding into AI systems that center human creativity.

Replit is now used at 85% of the Fortune 500. We have an opportunity to help shape the future of work. One where AI abstracts away the boring parts and humans shine as creative directors.

We’re also investing more globally, particularly in Europe, Asia, and the Middle East. Innovation can come from anywhere in the world, and we want to help unlock it.

[Replit ⠕ @Replit]

Happy International Women’s Day 💜

Give the dreamers & builders in your life the gift of creating.

When you gift 1 month of Replit Core, you get a free month of Core or $20 in credits.

Offer valid only today → https://t.co/XBI1MjTsj9

[Luke Tchang @luketchang]

@samuel_spitz should run web scraper every week and keep a graph of ai slop over time

[Luke Tchang @luketchang]

Everything is just code

[Replit ⠕ @Replit]

Introducing Replit Animation

Vibecode your next viral video in minutes, powered by Gemini 3.1 Pro.

(This video was 100% made in Replit Animation)

[Replit ⠕ @Replit]

Introducing Replit Animation

Vibecode your next viral video in minutes, powered by Gemini 3.1 Pro.

(This video was 100% made in Replit Animation)

[Luke Tchang @luketchang]

Buys Super Bowl ad, can’t handle load

[Luke Tchang @luketchang]

@XRarchitect Neat, thanks for sharing!

[Luke Tchang @luketchang]

Bloons tower defense in one prompt

[Replit ⠕ @Replit]

AI builds web apps well. Mobile apps have been harder.

Now, the inventor of React (the technology that AI uses to build apps), has a new announcement.