Theo - t3․gg - Videos
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I hate JavaScript
The only thing more cursed the JavaScript is the date class in JavaScript... Thank you Sevalla for sponsoring! Check them out at: https://soydev.link/sevalla SOURCES https://jsdate.wtf/ https://w...
"AI Startups" are over done (finally)
A lot of people think that these days investors will only ever invest in AI companies, but it's starting to look like that's not the case at all... Thank you Blacksmith for sponsoring! Check them ...
Which browser should you use right now?
There are a lot of browsers: Chrome, Arc, Safari, Firefox, Brave, and so many more. So which one should you use? Thank you Mobbin for sponsoring! Check them out at: https://soydev.link/mobbin Wan...
OpenAI dropped a new model built for developers
OpenAI just dropped a new model for agentic coding: GPT-5-Codex. Yes, they actually named another thing Codex 🙃 Thank you Browserbase for sponsoring! Check them out at: https://soydev.link/browser...
Cloudflare and Vercel can't stop fighting
Cloudflare and Vercel are fighting again... Thank you G2i for sponsoring! Check them out at: https://soydev.link/g2i SOURCE https://x.com/dok2001/status/1963611108998095246 Want to sponsor a vid...
It's not just you (Claude did get dumber)
I've definitely soured on Anthropic lately, but it's starting to see like that might be because of an infra issue??? Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos ...
This could have destroyed the entire web (the next one probably will)
npm got hacked. And while the outcome wasn't too bad, it could have been so much worse... Thank you Daytona for sponsoring! Check them out at: https://soydev.link/daytona (make sure to use THEO_10...
Ripple: a new framework that takes the best of everything
It's been a long time since the last new web framework and this one's really cool. Imagine the best parts of both React and Svelte, all in one... Thank you Clerk for sponsoring! Check them out at:...
Predicting OpenAI's future via their acquisitions
It feels like every week OpenAI is buying another company, and there's a surprisingly good reason why... Thank you Vapi for sponsoring! Check them out at: https://soydev.link/vapi SOURCES https:/...
You should NOT work at a startup
Is working at a startup really a good idea? Thank you G2i for sponsoring! Check them out at: https://soydev.link/g2i SOURCE https://x.com/theo/status/1960086531198394415 Want to sponsor a video...
Hacking Claude Code to make it 15x cheaper? 👀👀👀
Zai just launched a Claude Code competitor, and it's Claude Code. Yes actually, you can now use different models with Claude Code for a really really good price. But is it good???? Thank you Agent...
Arc just got acquired...by Atlassian???
The death of Arc has been tragic to watch, and today it's finally over. The Browser Company just got bought by Atlassian. Yes, the Jira Atlassian... Thank you Browserbase for sponsoring! Check the...
Is this the end of Chrome?
Google just lost their case, and yet somehow they actually sort of came out on top? This one was weird... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos SOURCES ht...
BREAKING: Anthropic announces massive investment (50% of OpenAI???)
AI is becoming an insane cash war. Not long ago OpenAI raised $40 billion and now Anthropic just raised $13 billion... Thank you Graphite for sponsoring! Check them out at: https://soydev.link/gra...
I finally get how SVGs work
SVGs are awesome, but do any of us really understand how they work? Thank you Mobbin for sponsoring! Check them out at: https://soydev.link/mobbin SOURCE https://www.joshwcomeau.com/svg/friendly...
The "right way" to vibe code (engineers, please watch)
Yes, vibe coding is useful. And yes, engineers aren't going anywhere. We have a lot to talk about... Thank you CodeRabbit for sponsoring! Check them out at: https://soydev.link/coderabbit SOURCE ...
Mongo can’t stop winning (I hate it)
I am not a fan of MongoDB, but their stock just jumped 40% and we really need to talk about it... Thank you G2i for sponsoring! Check them out at: https://soydev.link/g2i SOURCE https://www.there...
Git is holding us back
Git has been the backbone of software for decades, but is it the right solution? Can there be something better? Maybe... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/wor...
OpenAI just dropped a Cursor competitor?
OpenAI just dropped a massive update to Codex, it's now a full Cursor alternative that's actually pretty good??? Thank you Vapi for sponsoring! Check them out at: https://soydev.link/vapi Use cod...
A new git killer by Zed? Oh boy...
Sup nerds, we've got a lot to talk about
Please Stop Using Booleans.
Should we be using booleans? Yes, but a lot less then you think... Thank you Embrace for sponsoring! Check them out at: https://soydev.link/embrace SOURCE https://ntietz.com/blog/that-boolean-sho...
Breaking down my current tech stack
My channel started with the T3 stack and it's been changing. A lot... Thank you Mobbin for sponsoring! Check them out at: https://soydev.link/mobbin SOURCES https://github.com/t3dotgg/stripe-reco...
Why is everyone open sourcing their startups?
As devs we love open source, but is it a good idea for companies? Surprisingly yes... Thank you Graphite for sponsoring! Check them out at: https://soydev.link/graphite SOURCE https://newsletter....
Why every dev should avoid React
I always love breaking down these "react sucks" articles. There is some genuine good in here, but oh boy is it also so so wrong... Thank you Augment Code for sponsoring! Check them out at: https:/...
The current state of gpt-5
The GPT-5 launch was uh, rough. A lot went wrong here, and I want to talk about what really happened... Thank you Kilo Code for sponsoring! Check them out at: https://soydev.link/kilo (also make s...
A free model just appeared in Cursor (and it’s really good at code)
There's a new stealth model live in Cursor and it's actually quite good... Thank you Coderabbit for sponsoring! Check them out at: https://soydev.link/coderabbit Want to sponsor a video? Learn mo...
How did we get here? (A rant about Javascript runtimes)
Why are there so many different JavaScript runtimes? Node, Bun, v8, WorkerD, Deno, and so many more... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos SOURCES https...
I was wrong about AI costs (they keep going up)
Despite the cost of tokens going down, AI is actually getting more expensive... Thank you Fal for sponsoring! Check them out at: https://soydev.link/fal SOURCE https://ethanding.substack.com/p/ai...
JSON just got way better (yes really)
Y'all thought I wouldn't take the opportunity to nerd out about a JS internals thing? JSON.stringify improvements may not sound exciting, but to me....yeah. Enjoy. Thank you Augment Code for spons...
Things aren’t looking good for GitHub…
GitHub's CEO just resigned, making GitHub far less independent. They're now part of Microsoft's CoreAI team, and I'm concerned... Thank you Clerk for sponsoring! Check them out at: https://soydev....
I was wrong about GPT-5
Not much to say here. gpt-5 is not as magical as I said initially. This is my attempt to correct the record. Edit and thumbnail by me.
Anthropic has weird vibes
Why is Anthropic like this man... Thank you CodeRabbit for sponsoring! Check them out at: https://soydev.link/coderabbit Use code WEIRD-VIBES for 1 month of T3 Chat for $1: https://soydev.link/ch...
You're using AI coding tools wrong
As AI is getting better and better it's clear that the bottleneck for making software was never really writing code... Thank you Augment Code for sponsoring! Check them out at: https://soydev.link...
Vite won.
Vite has finally overtaken Webpack. This is huge for the future of the web... Thank you Arcjet for sponsoring! Check them out at: https://soydev.link/arcjet SOURCES https://x.com/youyuxi/status/1...
Everything you need to know about GPT-5 (+ mini and nano)
GPT-5 is finally here. I already went over my pre-release impressions this morning, so this is the deep dive video going over everything from pricing, benchmarks, launch, and more... Thank you Day...
So I've had gpt-5 for a bit now...
I, uh, yeah. gpt-5 is an incredible model. It hit harder than I imagined. I hope that comes through here. Try it now on T3 Chat: https://t3.chat Normally $8/month, but you can get your first mont...
Every smart AI model wants to kill you (yes really)
As AI gets smarter, does it become more evil? Kind of? This is an interesting one... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos SOURCE https://www.honest-broke...
OpenAI’s open source models are finally here
The open source OpenAI models are finally here, and oh boy were these worth the wait... Thank you Agentuity for sponsoring! Check them out at: https://soydev.link/agentuity Use code THANKS-OPENAI...
How the "Online Safety Act" might destroy the web
The UK's age restriction laws just went into effect. This is gonna be bad... Thank you Frontend Masters for sponsoring! Check them out at: https://soydev.link/masters SIGN THE PETITION: https://p...
Meta's weird plan to win the AI war
Meta has been dropping $100 Million+ offers for ai researchers to help build their vision of AI, and it's an interesting one... Thank you Augment Code for sponsoring! Check them out at: https://so...
Did gpt-5 just shadow drop? Horizon is the best code model ever
Some new anonymous models just dropped: the Horizon models. These are really impressive models, and I have no idea who made them... Thank you Depot for sponsoring! Check them out at: https://soyd...
Claude Code just got WAY more expensive (called it)
Claude Code usage is no longer unlimited, unfortunately the free lunch can't last forever... Thank you CodeRabbit for sponsoring! Check them out at: https://soydev.link/coderabbit Use code NOT-UN...
The real reason Tea got hacked (it's NOT vibe coding)
Thousands of users just had their data compromised by the Tea App. Not because of vibe coding, but horrible design decisions... Thank you Mobbin for sponsoring! Check them out at: https://soydev....
Even more open models???
Sup nerds, we've got a lot to talk about
The actual reason you can't get a job
I've been very lucky, but I think you can be too. You can optimize your luck, and I wanted to talk about how... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos Use ...
So I tried the GitHub "Vibe Coder"...
Github just dropped their vibe coding app. It's, uh, interesting... Thank you Sevalla for sponsoring! Check them out at: https://soydev.link/sevalla SOURCES https://x.com/satyanadella/status/1948...
Github's new vibe coder + new Qwen models? SUNDAY STREAM LET'S GO
Sup nerds, we've got a lot to talk about
Kiro: Amazon's unexpected Cursor competitor
Amazon just dropped their Vscode fork and oh boy is it different... Thank you G2i for sponsoring! Check them out at: https://soydev.link/g2i SOURCES https://kiro.dev/blog/introducing-kiro/ https:...
Trump just announced his AI plan. It’s weird.
The US just announced ai.gov and the AI action plan. This was a very interesting one... Thank you Coderabbit for sponsoring! Check them out at: https://soydev.link/coderabbit Use code WHITE-HOUSE...
The painful truth about startups (my story)
My job is, weird. And my journey to get here was chaos... Thank you WorkOS for sponsoring! Check them out at: https://soydev.link/workos Want to sponsor a video? Learn more here: https://soydev.l...