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Apple's first foldable iPhone, the iPhone Duo, starts at $1,999. The
devi=
ce expands to a 7.6-inch screen when unfolded, and a 5.4-inch
screen= =C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80= =8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0= =E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2= =A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C= =C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80= =8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2= =A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C= =C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80= =8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0= =E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2= =A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C=C2=A0=E2=80=8C= =C2=A0
Sign Up [1] |Advertise [2]|View Online [3]=20
=09=09TLDR=
=20
=09=09TOGETHER WITH [Lightfield] [4]
TLDR 2026-09-10
5,00=
0 STARTUPS REPLACED THEIR CRM IN 10 MONTHS. A16Z JUST LED THE
$47M SERIES=
A (SPONSOR) [4]=20
Lightfield [5] is the CRM that updates itself. Yest=
erday, it
announced a $47M Series A led by Andreessen Horowitz.=C2=A0
=
Here is why thousands of companies switched to Lightfield: it captures=
every email, call, and meeting automatically.=C2=A0No manual data entry,=
ever.
Ask "WHICH DEALS HAVE GONE QUIET THIS MONTH?" or "PREP ME FOR=
MY CALL
WITH ACME=E2=80=9D and it answers from your actual conversations=
[6], not
fields you never filled in.=C2=A0
Teach Lightfield how you=
sell and watch it go to work for you.
Skeptical? Grab time with the t=
eam to see it for yourself [7]
=F0=9F=93=B1=20
BIG TECH & STARTUPS=
APPLE'S IPHONE DUO, NEW WATCHES, IPHONE 18 PRO, AND AIRPODS 5:
EVE=
RYTHING TO KNOW (12 MINUTE READ) [8]=20
Apple's first foldable iPhone, =
the iPhone Duo, starts at $1,999. The
device expands to a 7.6-inch screen=
when unfolded, and a 5.4-inch
screen when used as a conventional handset=
. It comes in two colors:
Star White and Night Sky. More details on the d=
evice, as well as
Apple's other recent releases, are available in the art=
icle.=20
APPLE TAKES ON AI WEARABLES WITH ALWAYS-LISTENING WATCH FEATUR=
ES (4
MINUTE READ) [9]=20
The Apple Watch Series 12 and Ultra models =
have new Audio
Intelligence tools that use ambient listening to take high=
-level notes
of wearers' conversations throughout the day. The devices wi=
ll also
have a Live Recap function that can show a transcription of what =
was
said in a live conversation in the last 15 seconds and be able to
l=
isten to important sounds, such as a crying baby, doorbells, or
sirens. T=
hese features will not create or store recordings, and Apple
will not be =
able to access the raw audio. They will be available to
test in English l=
ater this year. The improved Siri is being rolled out
on watchOS 27 in be=
ta on September 14.=20
=F0=9F=9A=80=20
SCIENCE & FUTURISTIC TECHNOLOG=
Y
GENOME LANGUAGE MODELS CAN DESIGN CANCER VACCINES (32 MINUTE READ)=
[10]=20
Modern cancer-vaccine design involves identifying mutations,=
predicting presentation, predicting immunogenicity, ranking targets,
a=
nd designing RNA. However, biology is complicated, and whether a
target m=
akes a good vaccine candidate depends on all kinds of
information. This m=
akes cancer vaccines an unusually direct test of
whether AI models can ta=
ke what it has learned from biology and apply
that knowledge to design a =
medicine for one particular human being.=20
SCENARIOS FOR OUR ECONOMIC =
FUTURE (12 MINUTE READ) [11]=20
It is unknown yet whether AI will lead =
to unprecedented growth or
widespread unemployment. Anthropic's Economics=
team built a model to
understand how AI might affect jobs, growth, and u=
nemployment in the
US in the coming years. The model found that AI will l=
ead to adverse
impacts on wages and job prospects for knowledge workers i=
n scenarios
where growth is faster than anything in economic history, and=
in those
scenarios, the challenge will be making sure wealth is broadly =
shared.
The answer will depend on how AI affects all the tasks that make =
up
the economy, the new tasks it creates, and how fast AI takes on this=
work.=20
=F0=9F=92=BB=20
PROGRAMMING, DESIGN & DATA SCIENCE
=
HUMAN-IN-THE-LOOP WON'T SAVE YOUR AI SECURITY PROGRAM (SPONSOR) [12]=20
=
When approval fatigue turns sign-offs into rubber stamps, you need
more =
than good judgment to keep AI secure. Gray Swan's eBook [13] lays
out 5 g=
overnance implications for AI security, along with 3 questions
every boar=
d should be asking right now. Get your copy [13]=20
MULTIMODAL MODELS N=
EED VIDEO. WE FROZE TIME TO GIVE IT TO THEM (8
MINUTE READ) [14]=20
P=
ostHog's Replay Vision lets models view session recordings. This
post loo=
ks at how PostHog built the tool and how it implemented a
method for the =
model to actually see replays. It covers how PostHog
built a custom raste=
rizer that runs hundreds of concurrent jobs across
many pods. The custom =
rasterizer has so far rasterized more than 370
years of recordings into r=
oughly 3.5 million videos since it was
deployed in production in March. =
TAILWIND LABS IS JOINING SHOPIFY (3 MINUTE READ) [15]=20
Tailwin=
d is joining Shopify, one of the first companies operating at
scale to se=
e the potential of Tailwind CSS and start building with it.
Shopify has i=
nvested in making sure Tailwind is actively maintained
and will continue =
to provide a stable long-term home for the project.
Nothing will change w=
ith Tailwind CSS or any of Tailwind's other open
source projects, but the=
project will no longer try to grow its
business. All existing customers =
will maintain access to their
products, but Tailwind has closed signups f=
or new customers.=20
=F0=9F=8E=81=20
MISCELLANEOUS
AUTOMATTIC'S=
BOARD FORCES CEO MATT MULLENWEG INTO LEAVE OF ABSENCE (5
MINUTE READ) [1=
6]=20
Automattic's board has put founder and CEO Matt Mullenweg on a le=
ave
of absence against his will. The company's Chief Financial Officer,=
Mark Davies, had conspired with other board members to put Mullenweg
o=
n a paid leave of absence. Davies is now acting as interim CEO.
Mullenweg=
remains the leader of the WordPress project, and the
company's teams, pr=
iorities, and work will continue as planned. It is
unclear why the board =
took this action. Mullenweg remains on the board
of directors.=20
CRA=
CKS IN THE AI THESIS PART 2 (4 MINUTE READ) [17]=20
The price of AI is =
coming down. However, volume growth may not be
large enough to counteract=
the effective decline in prices. The models
driving volume increases are=
relatively cheap, standard models. These
trends do not appear to be driv=
en by the adoption of open-source
models or Chinese models.=20
=
=E2=9A=A1=20
QUICK LINKS
STOP COPY-PASTING MEETING NOTES INTO CLAU=
DE (SPONSOR) [18]=20
The Granola MCP integration connects your meeting =
notes to your AI
agent. Have your agent review meetings, update your CRM,=
and organize
tasks in Linear. Free month with code: TLDR1MO [19]=20
=
PROMPT EVALS ALONE ARE USELESS (13 MINUTE READ) [20]=20
A system that i=
mproves itself needs guardrails and a sandbox.=20
THE CACHE IS THE PRIC=
E (32 MINUTE READ) [21]=20
While GPT-6 Astra and Claude Fable 5.1 seem =
to have the same rates,
Fable's cache read is four times cheaper.=20
=
THE 60-SECOND PROCUREMENT TEST (5 MINUTE READ) [22]=20
Purchasers of op=
en source work should be able to check whether a
vendor contributes.=20
=
ON THE NAVIER=E2=80=93STOKES MILLENNIUM PRIZE PROBLEM (6 MINUTE READ) [= 23]=20
OpenAI heard that some Millennium Prize problems had been solved=
using large language models and saw it as an opportunity to
demonstrat=
e the power of its latest model without regard for the teams
who had been=
working on the problem already.=20
ANTHROPIC RESEARCHERS RAISE ALARM O=
VER AI ACCELERATION (5 MINUTE
READ) [24]=20
There are massive implica=
tions of a race towards superintelligence,
and not enough of Congress is =
focusing on them.=20
REACT 19.3 (23 MINUTE READ) [25]=20
View Trans=
itions and Fragment Refs are now stable in React 19.3.=20
Love TLDR? Tel=
l your friends and get rewards!
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riends to get free TLDR swag!=20
https://refer.tldr.tech/66662a80/ [26]=
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DR? =F0=9F=93=B0
If your company is interested in reaching an audienc=
e of tech
executives, decision-makers and engineers, you may want to ADVE=
RTISE
WITH US [28].=20
Want to work at TLDR? =F0=9F=92=BC
APPLY =
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to jobs@tl=
dr.tech and get $1k if we hire them! TLDR is one of INC.'S
BEST BOOTSTRAP=
PED BUSINESSES [31] of 2025.=20
If you have any comments or feedback, j=
ust respond to this email!=20
Thanks for reading,=20
Dan Ni [32] & Steph=
en Flanders [33]=20
Manage your subscriptions [34] to our other newslet=
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<div style=3D"display: none; max-height: 0px; overflow: hidden;">Apple'=
;s first foldable iPhone, the iPhone Duo, starts at $1,999. The device expa= nds to a 7.6-inch screen when unfolded, and a 5.4-inch screen =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80= =8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C = =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C = =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C = =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C = =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C =E2=80=8C = =E2=80=8C =E2=80=8C </div>
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<a href=3D"
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<div style=3D"text-align: center;">
<h1><strong>TLDR <span id=3D"date">2026-09-10</span></strong></h1>
</div>
</td></tr></tbody></table>
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id=3D"sponsy-copy"><td class=3D"container" style=3D"padding: 15px 15px;">
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<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Flightfield.app%2F%3Futm_source=3DTLDR%26utm_medium=3Dne= wsletter%26utm_campaign=3D2026-09-10_Primary_Lightfield%26utm_content=3Dhea= der_5_000_startups/2/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee2-= 000000/_FESm-ObavhFvmRtwcY3pQPsL8DeBvFb_rlhDwwaE24=3D452">
<span>
<strong>5,000 startups replaced the=
ir CRM in 10 months. a16z just led the $47M Series A (Sponsor)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
<a href=3D"
https://tracking.tldrnewslet= ter.com/CL0/https:%2F%2Flightfield.app%2F%3Futm_source=3DTLDR%26utm_medium= =3Dnewsletter%26utm_campaign=3D2026-09-10_Primary_Lightfield%26utm_content= =3Dbody_intro_lightfield/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9ed= beee2-000000/2KB_ikXN6vNxD02c8SfspJvC-67kHv3GoL0QKnohVxc=3D452" rel=3D"noop= ener noreferrer nofollow" target=3D"_blank"><span>Lightfield</span></a> is = the CRM that updates itself. Yesterday, it announced a <strong>$47M</strong=
Series A led by Andreessen Horowitz.
<p></p>
<p>Here is why thousands of companies switched to Lightfield: it captures e= very email, call, and meeting automatically. No manual data entry, eve= r.</p>
<p>Ask <strong>"Which deals have gone quiet this month?"</strong> or <stron= g>"Prep me for my call with Acme=E2=80=9D </strong>and it <a href=3D"https:= //tracking.tldrnewsletter.com/CL0/https:%2F%2Flightfield.app%2F%3Futm_sourc= e=3DTLDR%26utm_medium=3Dnewsletter%26utm_campaign=3D2026-09-10_Primary_Ligh= tfield%26utm_content=3Dbody_outro_answers_actual_conversations/1/010001a08a= e992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee2-000000/bRP6CMFTbpNXZKaezsm7yTuC= iHvf8Z5BCXT0v_yKRns=3D452" rel=3D"noopener noreferrer nofollow" target=3D"_= blank"><span>answers from your actual conversations</span></a>, not fields = you never filled in. </p>
<p>Teach Lightfield how you sell and watch it go to work for you.</p>
<p>Skeptical? Grab time with the team to <a href=3D"
https://tracking.tldrne= wsletter.com/CL0/https:%2F%2Flightfield.app%2F%3Futm_source=3DTLDR%26utm_me= dium=3Dnewsletter%26utm_campaign=3D2026-09-10_Primary_Lightfield%26utm_cont= ent=3Dcta_it_yourselfq/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbe= ee2-000000/8krB4QhViIHYG_SrA4Ucd25JCybW-vw9C5K9ATMfyE8=3D452" rel=3D"noopen=
er noreferrer nofollow" target=3D"_blank"><span>see it for yourself</span><=
</span></span></div>
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<div class=3D"text-block">
<div style=3D"text-align: center;">
<h1><strong>Big Tech & Startups</strong></h1>
</div>
</div>
</td></tr></tbody></table>
<table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
;" valign=3D"top">
<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Flinks.tldrnewsletter.com%2FQVfoj7/1/010001a08ae992e4-11= 54d533-0ff0-45f2-9832-4a7e9edbeee2-000000/x4Ov52KI0cP_2Y5_LgcYddaI9qwhrKjL_= V2hhUTabGA=3D452">
<span>
<strong>Apple's iPhone Duo, New Wat= ches, iPhone 18 Pro, and AirPods 5: Everything to Know (12 minute read)</st= rong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Apple's first foldable iPhone, the iPho=
ne Duo, starts at $1,999. The device expands to a 7.6-inch screen when unfo= lded, and a 5.4-inch screen when used as a conventional handset. It comes i=
n two colors: Star White and Night Sky. More details on the device, as well=
as Apple's other recent releases, are available in the article.
</span>
</span>
</div>
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<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Flinks.tldrnewsletter.com%2FyOUmog/1/010001a08ae992e4-11= 54d533-0ff0-45f2-9832-4a7e9edbeee2-000000/U559lh_c4oVVTRUxUwppkiqGcA2yNSXhf= 68ihS7BvAc=3D452">
<span>
<strong>Apple Takes on AI Wearables=
With Always-Listening Watch Features (4 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The Apple Watch Series 12 and Ultra mod= els have new Audio Intelligence tools that use ambient listening to take hi= gh-level notes of wearers' conversations throughout the day. The devices wi=
ll also have a Live Recap function that can show a transcription of what wa=
s said in a live conversation in the last 15 seconds and be able to listen =
to important sounds, such as a crying baby, doorbells, or sirens. These fea= tures will not create or store recordings, and Apple will not be able to ac= cess the raw audio. They will be available to test in English later this ye= ar. The improved Siri is being rolled out on watchOS 27 in beta on Septembe=
r 14.
</span>
</span>
</div>
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<div class=3D"text-block">
<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =9A=80</span></div>
</div>
</td></tr></tbody></table>
<table align=3D"center" bgcolor=3D"" border=3D"0" cellpadding=3D"0" cellspa= cing=3D"0" width=3D"100%"><tbody><tr><td class=3D"container" style=3D"paddi= ng-top: 0px; padding-bottom: 0px;">
<div class=3D"text-block">
<div style=3D"text-align: center;">
<h1><strong>Science & Futuristic Technology</strong></h1>
</div>
</div>
</td></tr></tbody></table>
<table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
;" valign=3D"top">
<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fwww.radicalnumerics.ai%2Fblog%2Fomnii-cancer-vaccines%3= Futm_source=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7= e9edbeee2-000000/IYAkHcp--OVwxLd8RSs6rzJZzS7os4ZbgMZtWtzamNI=3D452">
<span>
<strong>Genome language models can = design cancer vaccines (32 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Modern cancer-vaccine design involves i= dentifying mutations, predicting presentation, predicting immunogenicity, r= anking targets, and designing RNA. However, biology is complicated, and whe= ther a target makes a good vaccine candidate depends on all kinds of inform= ation. This makes cancer vaccines an unusually direct test of whether AI mo= dels can take what it has learned from biology and apply that knowledge to = design a medicine for one particular human being.
</span>
</span>
</div>
</td></tr></tbody></table>
<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fwww.anthropic.com%2Finstitute%2Fecon-scenarios%3Futm_so= urce=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbee= e2-000000/ENWMSG9_q_NsULlswkK8g39a2921bSMH6hzkRDiYTws=3D452">
<span>
<strong>Scenarios for our Economic = Future (12 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
It is unknown yet whether AI will lead =
to unprecedented growth or widespread unemployment. Anthropic's Economics t= eam built a model to understand how AI might affect jobs, growth, and unemp= loyment in the US in the coming years. The model found that AI will lead to=
adverse impacts on wages and job prospects for knowledge workers in scenar= ios where growth is faster than anything in economic history, and in those = scenarios, the challenge will be making sure wealth is broadly shared. The = answer will depend on how AI affects all the tasks that make up the economy=
, the new tasks it creates, and how fast AI takes on this work.
</span>
</span>
</div>
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<div class=3D"text-block">
<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =92=BB</span></div></div>
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<div class=3D"text-block">
<div style=3D"text-align: center;">
<h1><strong>Programming, Design & Data Science</strong></h1>
</div>
</div>
</td></tr></tbody></table>
<table style=3D"table-layout: fixed; width: 100%;" width=3D"100%"><tbody><t= r><td style=3D"padding:0;border-collapse:collapse;border-spacing:0;margin:0=
;" valign=3D"top">
<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fhubs.ly%2FQ04wWxZc0%3Futm_source=3Dtldrnewsletter/1/010= 001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee2-000000/vfwTnCeHHo6Ma6KZe= dpgkNRfW3fA8v7JXbwNLTPqLxw=3D452">
<span>
<strong>Human-in-the-loop won't sav=
e your AI security program (Sponsor)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
When approval fatigue turns sign-offs i= nto rubber stamps, you need more than good judgment to keep AI secure. <a h= ref=3D"
https://tracking.tldrnewsletter.com/CL0/https:%2F%2Fhubs.ly%2FQ04wWx= Zc0/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee2-000000/PWB8UHDq= 1HMqEzlxl22dNgeaMyYzK7rxwcuapsv7ATs=3D452" rel=3D"noopener noreferrer nofol= low" target=3D"_blank"><span>Gray Swan's eBook</span></a> lays out 5 govern= ance implications for AI security, along with 3 questions every board shoul=
d be asking right now. <a href=3D"
https://tracking.tldrnewsletter.com/CL0/h= ttps:%2F%2Fhubs.ly%2FQ04wWxZc0/2/010001a08ae992e4-1154d533-0ff0-45f2-9832-4= a7e9edbeee2-000000/Eg4casrxN8nThqZd--h1X7KRHOPBfqdNNYOwnblal3U=3D452" rel= =3D"noopener noreferrer nofollow" target=3D"_blank"><span>Get your copy</sp= an></a>
</span>
</span>
</div>
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<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fposthog.com%2Fblog%2Fmultimodal-models-need-video%3Futm= _source=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9ed= beee2-000000/vxdedJWrJxbtqbOxrROIU7FjvYYrx8-zjQB1G3aqVaY=3D452">
<span>
<strong>Multimodal models need vide=
o. We froze time to give it to them (8 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
PostHog's Replay Vision lets models vie=
w session recordings. This post looks at how PostHog built the tool and how=
it implemented a method for the model to actually see replays. It covers h=
ow PostHog built a custom rasterizer that runs hundreds of concurrent jobs = across many pods. The custom rasterizer has so far rasterized more than 370=
years of recordings into roughly 3.5 million videos since it was deployed =
in production in March.
</span>
</span>
</div>
</td></tr></tbody></table>
<table align=3D"center" border=3D"0" cellpadding=3D"0" cellspacing=3D"0" wi= dth=3D"100%"><tbody><tr><td class=3D"container" style=3D"padding: 15px 15px=
<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Ftailwindcss.com%2Fblog%2Ftailwind-is-joining-shopify%3F= utm_source=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e= 9edbeee2-000000/KBi79vslVcp2bZxmEywCnem6mg06MUSzwmnguSiYyVk=3D452">
<span>
<strong>Tailwind Labs is joining Sh= opify (3 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Tailwind is joining Shopify, one of the=
first companies operating at scale to see the potential of Tailwind CSS an=
d start building with it. Shopify has invested in making sure Tailwind is a= ctively maintained and will continue to provide a stable long-term home for=
the project. Nothing will change with Tailwind CSS or any of Tailwind's ot= her open source projects, but the project will no longer try to grow its bu= siness. All existing customers will maintain access to their products, but = Tailwind has closed signups for new customers.
</span>
</span>
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<div class=3D"text-block">
<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =8E=81</span></div></div>
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<div class=3D"text-block">
<div style=3D"text-align: center;"><strong><h1>Miscellaneous</h1></strong><= /div>
</div>
</td></tr></tbody></table>
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<div class=3D"text-block">
<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Ftechcrunch.com%2F2026%2F09%2F09%2Fautomattics-board-for= ces-ceo-matt-mullenweg-into-leave-of-absence%2F%3Futm_source=3Dtldrnewslett= er/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee2-000000/J_kTR-JEG= 37X1UR75jkvreMGbD2bbOuCv-IwmVJez8o=3D452">
<span>
<strong>Automattic's board forces C=
EO Matt Mullenweg into leave of absence (5 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Automattic's board has put founder and = CEO Matt Mullenweg on a leave of absence against his will. The company's Ch= ief Financial Officer, Mark Davies, had conspired with other board members =
to put Mullenweg on a paid leave of absence. Davies is now acting as interi=
m CEO. Mullenweg remains the leader of the WordPress project, and the compa= ny's teams, priorities, and work will continue as planned. It is unclear wh=
y the board took this action. Mullenweg remains on the board of directors.
</span>
</span>
</div>
</td></tr></tbody></table>
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<span>
<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Feconlab.substack.com%2Fp%2Fai-index-sept-2026%3Futm_sou= rce=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbeee= 2-000000/kTynbB-zpT2Tp01PVUGMYVSce0TytDWP_qFxmhfXVzw=3D452">
<span>
<strong>Cracks in the AI Thesis Par=
t 2 (4 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The price of AI is coming down. However=
, volume growth may not be large enough to counteract the effective decline=
in prices. The models driving volume increases are relatively cheap, stand= ard models. These trends do not appear to be driven by the adoption of open= -source models or Chinese models.
</span>
</span>
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<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=E2=9A= =A1</span></div></div>
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https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fwww.chrismdp.com%2Fprompt-evals-are-useless%2F%3Futm_so= urce=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-4a7e9edbee= e2-000000/mfDYEizeMFK1wDodJB0a6oDmxBr6WObeHg8T7RUtT6g=3D452">
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A system that improves itself needs gua= rdrails and a sandbox.
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<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
While GPT-6 Astra and Claude Fable 5.1 = seem to have the same rates, Fable's cache read is four times cheaper.
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<strong>The 60-second procurement t= est (5 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Purchasers of open source work should b=
e able to check whether a vendor contributes.
</span>
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<a href=3D"
https://tracking.tldrnewsletter.= com/CL0/https:%2F%2Fsimonwillison.net%2F2026%2FSep%2F8%2Fon-navier-stokes%2= F%3Futm_source=3Dtldrnewsletter/1/010001a08ae992e4-1154d533-0ff0-45f2-9832-= 4a7e9edbeee2-000000/FiDte2ORHmYtGDZch9Ekru_4qPkp6UHI--KzJ1Kc5ZM=3D452">
<span>
<strong>On the Navier=E2=80=93Stoke=
s Millennium Prize Problem (6 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
OpenAI heard that some Millennium Prize=
problems had been solved using large language models and saw it as an oppo= rtunity to demonstrate the power of its latest model without regard for the=
teams who had been working on the problem already.
</span>
</span>
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<span>
<strong>Anthropic Researchers Raise=
Alarm Over AI Acceleration (5 minute read)</strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
There are massive implications of a rac=
e towards superintelligence, and not enough of Congress is focusing on them=
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<span>
<strong>React 19.3 (23 minute read)= </strong>
</span>
<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
View Transitions and Fragment Refs are = now stable in React 19.3.
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