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DON'T ROLL YOUR OWN ...

Developers should stop rolling out features that browsers already do well.

2026.05.25
susam.net9 min readTLDR

THE ETERNAL SLOPTEMBER

The adoption of AI agents into software development will be one of the most costly mistakes of the field's history.

2026.05.25
geohot.github.io6 min readTLDR

Sponsored

RELIABLY.

Buildkite has run CI for OpenAI, Airbnb, Canva, Uber and Shopify for 7-12 yrs as they grew.

2026.05.22
buildkite.comSponsorTLDR

GOOGLE PUSHES AI-GENERATED ADS FURTHER INTO SEARCH RESULTS

Google has started testing several new ad formats in both standard search and in AI Mode. AI-generated ads for brands and products will now appear below the responses to some prompts in AI Mode. Ads with direct offers for discounted products will be displayed in standard search results. The ads will not appear in Gemini for now. Google will protect the ads against AI hallucinations with strong guardrails.

2026.05.22
links.tldrnewsletter.com6 min readTLDR

SPACEX POSTPONES LAUNCH OF NEWLY REDESIGNED STARSHIP

Starship's launch has been delayed due to a malfunctioning part in the launch tower. SpaceX may try launching again today if the problem is fixed in time. The postponed test mission will deploy 20 Starlink simulators and stress-test tiles designed to protect the craft as it re-enters the Earth's atmosphere. The new investigation of Starship is designed to carry 100 metric tons to low-Earth orbit - the company's workhorse Falcon 9 vehicle can carry roughly 23 metric tons.

2026.05.22
links.tldrnewsletter.com6 min readTLDR

EXPERIMENTAL DRUG YIELDS DRAMATIC WEIGHT LOSS

Retatrutide, an experimental shot by drugmaker Eli Lilly, was so powerful in human trials that participants stopped taking it because they thought they were losing too much weight. The results for some of the heaviest patients were on par with those seen with gastric bypass surgery. There are some side effects at higher doses, such as gastrointestinal side effects so unpleasant that some patients stop taking it. Eli Lilly has not yet applied for regulatory approval.

2026.05.22
links.tldrnewsletter.com7 min readTLDR

THE INTERNET CAN'T STOP WATCHING FIGURE AI'S HUMANOID ROBOTS HANDLING PACKAGES

Figure AI has been livestreaming its humanoid robots placing packages onto a conveyor belt since May 13. The livestream has become a viral sensation. It was originally intended to only run for eight hours, but the company decided to continue the livestream 24/7 after the initial time was up. Viewers have named the robots and Figure plans to roll out related robot merchandise.

2026.05.22
arstechnica.com10 min readTLDR

Sponsored

REACH 7 MILLION ENGAGED TECH PROFESSIONALS

Ads get ignored on social media but not in TLDR! Reach developers, PMs, marketers, founders and other tech leaders where they actually

2026.05.22
advertise.tldr.techSponsorTLDR

WHAT'S NEW IN WEB EXTENSIONS: I/O 2026 RECAP

AI is making extension development more approachable than ever. Google is expanding developer registration to over 120 additional countries this year. The Chrome team is dedicated to elevating the extension developer experience and has expanded store permissions, modernized platform APIs, and introduced AI-integrated tooling to remove friction from workflows. This post details some of the biggest new features the team has introduced.

2026.05.22
developer.chrome.com6 min readTLDR

CHEAP CODE MEANS FORMAL VERIFICATION IS REASONABLE NOW

One way to make sure that agents complete tasks correctly is to make them hill climb on verifiable problems. Comprehensive conformance test suites are valuable because they help guarantee that agents produce what developers actually want them to. TLA+ is a formal spec language for modeling complex systems with many moving parts. Formal languages have proof checkers and other ways of catching many of the types of hallucinations that language models create.

2026.05.22
antfly.io9 min readTLDR

HOW SPACEX'S IPO CEMENTS ELON MUSK'S GRIP ON THE COMPANY

SpaceX has adopted a corporate governance policy that will erode typical shareholder protections and give Elon Musk virtually unchecked executive authority when the company goes public. It is combining supervoting shares, mandatory arbitration, stricter rules on shareholder proposals, and Texas corporate law to give Musk and other insiders broad control. The rules sharply limit investors' ability to challenge management, sue in court, and force votes on governance issues. It will protect SpaceX from the kind of criticism aimed at Tesla, where investors have challenged Musk on issues ranging from his pay package to the acquisition of his solar energy company, SolarCity.

2026.05.22
links.tldrnewsletter.com3 min readTLDR

TODAY CLICKUP REDUCED HEADCOUNT BY 22%

ClickUp is in the strongest position it's ever been in, but the company decided to cut 22% of its staff to operate at its highest level of productivity. The savings from the change will flow directly back to the staff who stay. The company plans to introduce million-dollar salary bands for staff who create outsized impact using AI. Staff affected by the cuts will receive packages aimed at honoring their contributions and easing the transition.

2026.05.22
threadreaderapp.com5 min readTLDR

AFTER AUTOMATION

AI progress creates more work for humans, not less.

2026.05.22
every.to39 min readTLDR

IT'S TIME TO WALK

Dictation and agentic AI have given humans back the ability to walk, to rest, and to think while moving.

2026.05.22
inferterra.com6 min readTLDR

IDEAS

This page contains a collection of mental models, patterns, and frameworks on thinking clearly, building well, and living with intention.

2026.05.22
noahzender.comToolTLDR

Sponsored

If QA is a bottleneck on your software engineering team and you're releasing slowly because of it, you must check out QA Wolf.

2026.05.21
qawolf.comSponsorTLDR

THE SECRETS REVEALED IN SPACEX'S IPO FILING

SpaceX's IPO is expected to set a record for the biggest stock debut ever and could make its founder, Elon Musk, the world's first trillionaire. The company is aiming to go public in June on Nasdaq under the ticker symbol SPCX. The company lost $4.9 billion last year on revenue of $18.7 billion. This year, in the first quarter, SpaceX lost $4.3 billion on $4.7 billion of revenue. The financials show an established business launching satellites and astronauts to space, though it is still unprofitable.

2026.05.21
links.tldrnewsletter.com9 min readTLDR

OPENAI IS PREPARING TO FILE FOR AN IPO VERY SOON

OpenAI has been working with bankers to prepare to file for an IPO in the coming days or weeks. The company aims to be ready to go public as early as September. Its plans remain fluid and could still change. The company still has to overcome concerns about whether it can generate enough revenue to support its spending commitments, among a host of other challenges. It recently missed multiple internal revenue and user targets.

2026.05.21
links.tldrnewsletter.com7 min readTLDR

CHICKENS WITHOUT EGGS? DE-EXTINCTION COMPANY CREATES ARTIFICIAL EGG

Biotech startup Colossal has developed an artificial eggshell that allows almost the entire avian development process to occur. Its device keeps the entire contents of an egg intact so the embryo can develop normally. The transfer of the egg contents can take place before the circulatory system forms. The artificial container allows scientists to make changes to the embryo more easily and makes it easier to film and track changes to cell movements and rearrangements.

2026.05.21
arstechnica.com9 min readTLDR

ARTIFICIAL WOMB FOR GROWING MAMMALS IS AT 'ONE-YARD LINE', SAYS COLOSSAL CEO

De-extinction startup Colossal claims it has almost finished building an artificial womb capable of supporting mammal development. The company still needs to reproduce the chemical signals between early development stages, but the artificial womb platform already achieves a 100% development rate. The system is not part of Colossal's late 2028 woolly mammoth birth plans. The technology could eventually have implications beyond deextinction. The company plans to open-source all of its technologies for conservation.

2026.05.21
decrypt.co4 min readTLDR

Sponsored

THE CONTEXT LAYER FOR MODERN ENGINEERING TEAMS

Agents can generate code. Getting it right for your system, team conventions, and past decisions is the hard part. Unblocked is the context layer that turns code, docs, tickets, and conversations into actionable context, so engineers move faster and agents stay on track.

2026.05.21
getunblocked.comSponsorTLDR

MAKING OUR MONOREPO ERGONOMIC FOR AGENTS

Code agents have their own failure modes, appetite for context, and demands on what counts as a well-organized repository. Companies need to take this seriously as the work to make a repository ergonomic for agents is bigger than expected, and the principles are non-obvious. However, the payoff is substantial. This article looks at how Basis made its codebase ergonomic for agents in three months using principles rooted in verifiability, interoperability, and canonical context.

2026.05.21
links.tldrnewsletter.com21 min readTLDR

GEMINI 3.5 FLASH DEVELOPER GUIDE

Gemini 3.5 Flash is now generally available. This guide contains an overview of improvements, API changes, and migration guidance for the model. Gemini 3.5 Flash features Thinking, structured outputs with tools, multimodal function responses, code execution with images, and combined tool use, but not Computer Use. It delivers sustained frontier performance in agentic execution, coding, and long-horizon tasks at scale.

2026.05.21
links.tldrnewsletter.com14 min readTLDR

HOW I CHOOSE WHICH CLOUDFLARE EMPLOYEES TO REPLACE WITH AI

Cloudflare laid off more than 20% of its workforce two weeks ago, many of whom were responsible for various measuring tasks. The company now has better tools to measure exactly how the business is performing. Cloudflare has a record number of open positions, and it expects its number of employees to grow. AI is allowing the company to better measure itself so the humans on its teams can focus on creating and capturing value by building and selling.

2026.05.21
links.tldrnewsletter.com5 min readTLDR

JEFF BEZOS DESCRIBES HIS $38B STARTUP PROMETHEUS FOR THE FIRST TIME: ‘NOTHING TO DO WITH ROBOTICS'

Jeff Bezos' startup, Project Prometheus, is developing an artificial general engineer and building next-generation tools for designing physical objects, similar to a very modern version of Computer-Aided Design. The tools Prometheus is building will help companies like Blue Origin immensely. Project Prometheus launched with $6.2 billion in funding and has roughly 120 employees from firms including OpenAI, DeepMind, Meta, and xAI. It was previously incorrectly reported to be an AI robotics company.

2026.05.21
links.tldrnewsletter.com2 min readTLDR

Sponsored

BUILD AI TO HELP PATIENTS NAVIGATE HEALTHCARE

Sage Care is rebuilding healthcare access with AI voice agents and smart routing so patients get care faster. The founders (ex-Apple, ex-Uber with successful previous exits) are hiring entrepreneurial AI engineers to help scale this mission, learn more here [14].

2026.05.21
sage.careSponsorTLDR

Sponsored

REACH 7 MILLION ENGAGED TECH PROFESSIONALS

Ads get ignored on social media but not in TLDR! Reach developers, PMs, marketers, founders and other tech leaders where they actually

2026.05.21
advertise.tldr.techSponsorTLDR

E-HIKING IS HERE. YOU CAN TELL BY MY 1,000-WATT HIPS

Personal exoskeletons, once reserved for military, heavy industry, and mobility rehabilitation, are now light and affordable enough for regular people who want to feel superhuman.

2026.05.21
links.tldrnewsletter.com6 min readTLDR

Sponsored

BETTER

Both self-built and single-source MCP connectors fail 25% of prompts, breaking on schema mapping, date logic, multi-filter conditions, and write validations. Neither have the governance needed to safely connect AI tools to your business data.

2026.05.20
cloud-login.cdata.comSponsorTLDR

EVERYTHING GOOGLE ANNOUNCED AT I/O 2026: GEMINI, SEARCH, ANDROID XR, & MORE

Google announced tons of new Gemini-powered features across its biggest products and services at I/O 2026. This page compiles all of the consumer-facing and most notable developer announcements. Gemini 3.5 Flash, which surpasses 3.1 Pro in coding, agent, and multimodal benchmarks, is rolling out today in the Gemini app, Search, Antigravity 2.0, and Gemini API. Gemini 3.5 Pro, which is currently in testing, will be available next month.

2026.05.20
9to5google.com5 min readTLDR