Theo - t3․gg

I think I figured it out

142K views · today · 42:20

With Opus 5.5 and Fable 5.2 finally out, it's time to break down what you should be using each one for, and how they work together S/O @Ph4seon3 for the awesome edit

Progress?

189K views · 2d ago · 29:37

Google released Gemini 4 Carbon and honestly, it's not what I expected and it might prove Google is taking even more steps in the right direction, lets talk about it S/O @Ph4seon3 for the awesome edit

Nobody Is Competing With Anthropic

274K views · 3d ago · 48:21

Fable 5.2 may not be as big of a jump as Opus 5 to Opus 5.5, but Anthropic is still impressing me and I wanna break down why. S/O @Ph4seon3 for the awesome edit

Coding Isn't About Code Anymore

226K views · 4d ago · 45:21

AI has given engineers a new job, which is much more akin to gardening rather than coding, so let's talk about it S/O @Ph4seon3 for the awesome edit

How Claude Fixes It's Own Code

147K views · 6d ago · 42:15

Anthropic released an article on their Code Review process and since T3 Code has seen as many as 800 pull requests filed in a day, lets compare their process to what I've experienced recently and see what differs! Source

I can't believe Pewdiepie made this

256K views · 8d ago · 41:03

OpenAI banned PewdiePie TWICE while he was building his own AI systems and the technical work behind it has me impressed, so lets see what he actually made and whether or not you should use it Sources S/O @Ph4seon3 for the awesome edit

▶️ Mentioned videos: Video on youtube.com

Agents Sucked At UI (Until Today)

428K views · 9d ago · 31:45

It’s time to make agents good at design, so let’s breakdown how I made Opus hill climb till it finally was making what I wanted it to S/O @Ph4seon3 for the awesome edit

OpenAI is getting desperate

173K views · 10d ago · 15:50

Just a month after their reduction, OpenAI is doubling the limits of their plans. Is it enough? S/O @Ph4seon3 for the awesome edit

Anthropic can't stop winning

217K views · 11d ago · 16:46

Anthropic has announced Claude Ultra, a rebrand on the $200 monthly tier while REMOVING 5 hour limits from verified accounts, which seems awesome, but the details matter, so lets break it down S/O @Ph4seon3 for the awesome edit

My last video about ai harnesses

205K views · 13d ago · 49:30

Here we go again, it seems like there's no single "resource" that properly explains what a harness actually is, so I made a video about it S/O @Ph4seon3 for the awesome edit

🎵 Mentioned music: resource

T3 Code broke me

454K views · 15d ago · 41:50

T3 Code has broken over 700,000 users, so I think it's time to give ya'll a tutorial on how I use it since I'm still contributing to it S/O @Ph4seon3 for the awesome edit

How To Give Claude Unlimited Usage

229K views · 16d ago · 38:48

Claude should have a limit...right? You would think so. But today I'm going to show you how to run Claude for WEEKS S/O @Ph4seon3 for the awesome edit

the hard truth about token spend

143K views · 17d ago · 36:08

Lauren's (@poteto) is spending 1.5 Trillion tokens a month, which sounds crazy, until we talk about what tokens actually cost S/O @Ph4seon3 for the awesome edit

These 3 skills changed my life

245K views · 18d ago · 30:38

As I've shipped more and more, I've realized these three skills I wrote are the cornerstones of my workflow and how I ship in 2026 Oh also I did make tstack... S/O @Ph4seon3 for the awesome edit

Even The NSA Got Involved

251K views · 22d ago · 29:23

Everything seems like it's gotten hacked, on an unprecedented day in software history. We have to talk about it S/O @Ph4seon3 for the awesome edit

Opus 5.5 is proof that we do need smarter models

244K views · 23d ago · 31:13

As we see games get full blown crossovers and models get incredible at optimizing things on their own, I'm not sure we actually NEED smarter models? S/O @Ph4seon3 for the awesome edit

Your prompts kinda suck

268K views · 25d ago · 31:48

Most of the features engineers are making, are just prompts, and you can make your life way easier by prompting better S/O @Ph4seon3 for the awesome edit

Anthropic Rebuilt Git (yes really)

248K views · 28d ago · 48:05

In just 5 months, Anthropic went from 2,500 merges per day to over 30,000 this September and they wrote a blog explaining just how that was possible with their new system, Scion Sources S/O @Ph4seon3 for the awesome edit

So I've been testing Gemini 4...

284K views · 1mo ago · 38:30

Argon might be Google'ss Best Model Yet with Gemini 4, but is it 8 months to late? S/O @Ph4seon3 for the awesome edit

Meta just caught up with Anthropic

182K views · 1mo ago · 38:02

Meta just released Muse Wonder Full, making them a Frontier lab. But how good is it, actually? I tested it to find out. S/O @Ph4seon3 for the awesome edit

I thought AI was gonna get cheaper?

149K views · 1mo ago · 18:18

Yes, AI has gotten cheaper and it's going to keep getting cheaper, just not in the way you see with your wallet at the moment, lets break it down. Check them out at Sources S/O @Ph4seon3 for the awesome edit

You can rewrite typescript in rust for $420k

199K views · 1mo ago · 47:40

I ported all of typescript to rust...yes really. ts-rust (aka tsc-rs) is here, and it only cost me $420k. Check it out S/O @Ph4seon3 for the awesome edit

finally a good small model

174K views · 1mo ago · 41:11

Haiku 5.5 finally gives Anthropic a small model I’d use, but its cheapest pricing comes with a 100,000-token context threshold so lets break down if they're worth it S/O @Ph4seon3 for the awesome edit

Does the $200 Codex plan suck now?

174K views · 1mo ago · 33:33

OpenAI's $500 plan's new Ultrafast mode means your weekly limit can disappear in 2 hours, so does that just mean the $200 tier is useless now? Browserbase General Translation S/O @Ph4seon3 for the awesome edit