Charles Yeh

cto @withpersona, also i used to make flash games

[Charles Yeh @iamcharbles]

@npew being technical can still be a differentiator

[Charles Yeh @iamcharbles]

@mr_cheu lol you think they're all in on fable?

[Yuchen Jin @Yuchenj_UW]

Didn’t expect today to be Opus 5 day!

Opus 5 beats Fable 5 on nearly every benchmark. It looks like a major leap in coding and agentic capabilities, with much better token efficiency.

And it’s half the price of Fable 5. Can’t wait to try it.

[Charles Yeh @iamcharbles]

@brndnwll Very nice did you come up with them yourself

[Charles Yeh @iamcharbles]

@zoink Yeaa saying design or engineering is dead is like saying there are no more problems in the world

[Charles Yeh @iamcharbles]

i think of using ai like using high level programming languages. yes, you could do things more precisely by coding in c++ or even assembly. but also it's not the best tool for everything anymore

the simplest use case i started with last year was actually just telling ai exactly what classes / functions to write, treating it as a keyboard but with fewer keystrokes. yea it's expensive but helped me understand what it's good at vs what it's bad at

[Charles Yeh @iamcharbles]

@brndnwll lool i do like scallions

[Charles Yeh @iamcharbles]

apparently anthropic employees are ants, openai employees are openers, and x employees are tweeps?

we call ourselves personerds. Rick wanted to go with "persons", thank goodness the team vetoed that one 🙄

any other goods ones out there?

[Charles Yeh @iamcharbles]

@endingwithali Us rn

[Peter Dedene @dedene]

“Back in my day we used to read the code.”

[Charles Yeh @iamcharbles]

@araseb_ I haven't used Coincidence yet, is that one good?

[Charles Yeh @iamcharbles]

cool paper on how image generation models think by determining the average activations (thought) along each denoising step. this is what ai thinks of us, derived from applying the technique to selfie photos. among other things, wild that suspect is imagined as guilty... https://t.co/3ki2rk14YS

[Charles Yeh @iamcharbles]

fable is back! can confirm the grandma exploit still doesn't work

[Charles Yeh @iamcharbles]

hello world is the new floppy disk

[Charles Yeh @iamcharbles]

@michalmalewicz bottleneck isn't making something nor getting people to notice. it's making something that's genuinely useful

[Charles Yeh @iamcharbles]

@neerajjj6785 predominant theory is https://t.co/6coSsFfqpI

[Charles Yeh @iamcharbles]

@_chenglou I know what you mean. A non-eng friend uses Google drive for this prolificly (coincidentally we both used to be at Dropbox)

[Charles Yeh @iamcharbles]

@MatthewBerman These are fundamentally different problems

[terminally onλine εngineer @tekbog]

understanding every PM ive ever interacted with right now

what is bro cooking
we need to ship

[Charles Yeh @iamcharbles]

@alinalatinina oh wow i love it, hit by inspiration

[Charles Yeh @iamcharbles]

every startup's coding agent is a harness on
claude code is a harness on
reasoning is a harness on
mixture of experts is a harness on
llms