letscodeit.devnotes from the build

HERO

SHORT NOTES

Quick takes, product updates and stray thoughts — the length of a tweet.

NOTES

FOOTER

letscodeit.devnotes from the build

A blog about code, design and the slow art of shipping software that people actually want to use.

PRODUCT

Changelog
Roadmap
API

COMPANY

About
Blog
Notes

RESOURCES

Guest post
RSS feed
Docs

© 2026 letscodeit.dev© 2026 letscodeit.dev — Built in public.

Terms·Privacy·Cookies·License

NOTE

·

Comments

FEATURED POSTS

03 / 03

June 19, 2026

17 min read

We skipped Contentful: GitHub as a CMS for our Next.js blog

We publish letscodeit.dev blog posts from a separate GitHub repository. The Next.js app fetches markdown at runtime with a one-hour cache,…

Dev Team

June 17, 2026

10 min read

GEO for developers: what gets cited by ChatGPT and Perplexity

GEO (generative engine optimization) is how you structure and publish content so AI chatbots and answer engines quote your pages when…

Dev Team

May 28, 2026

9 min read

Token Economics: What Your Text Actually Costs

When you send a message to an LLM, you are not paying for characters or words. You pay for tokens . A token is the unit the model splits…

Dev Team

GPT-5.6 utilized a prompt to address a long-standing… | Let's Code It

NOTE

GPT-5.6 utilized a prompt to address a long-standing…

/ notes·/ GPT-5.6 utilized a prompt to address a…

Dev Team·July 18, 2026

GPT-5.6 utilized a prompt to address a long-standing 30-year gap in convex optimization.

This development follows OpenAI's CDC proof announcement. The achievement highlights the model's capability to tackle complex mathematical problems, showcasing advancements in AI-driven problem-solving. The Reddit post discussing this has garnered significant attention, with 264 points and 141 comments.

Source: old.reddit.com

Comments

Comments (1)

M

Mei Lin·July 18, 2026

It's impressive to see AI making strides in areas like convex optimization, bridging gaps that have existed for decades.