Forum: Tower of Rassilon

Tesla 6-seat Model Y 🚙, Meta's AI disappointment 🤖, the understanding bottleneck 🧠

From TLDR@VERT to All on Fri Jul 3 10:24:06 2026

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The Model Y Long Wheelbase is now available in the US and Puerto Rico.
Th=
e 3-row, 6-seat configuration has ample headroom and
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BIG TECH & STARTUPS=

MODEL Y LONG WHEELBASE (3 MINUTE READ) [5]=20

The Model Y Long W=
heelbase is now available in the US and Puerto
Rico. The 3-row, 6-seat co=
nfiguration has ample headroom and legroom
for all passengers. The trunk =
fits a 28" and a 20" suitcase each, and
the frunk can hold an additional =
20" suitcase. More details about the
wheelbase, along with pictures and v=
ideos of the vehicle, are
available in the post.=20

MARK ZUCKERBERG T=
ELLS STAFF THAT AI AGENTS HAVEN'T PROGRESSED AS
QUICKLY AS HE'D HOPED (2 =
MINUTE READ) [6]=20

Mark Zuckerberg told staff during an internal town =
hall on Thursday
that the pace of AI agent development was not accelerati=
ng in the way
executives had previously expected it to. He has apparently=
commented
that the job cuts earlier this year were not as clean as they =
should
have been. The perceived upside of the company's new AI-focused
=
structure has not come to fruition yet. Zuckerberg says that the
company =
will begin to see improvements from its AI investments in the
next three =
to six months.=20

=F0=9F=9A=80=20

SCIENCE & FUTURISTIC TECHNOLOGY
=

FAA PROPOSAL: SUPERSONIC AIRLINERS CAN FLY OVER US CITIES IF THEY'RE
=
QUIET (3 MINUTE READ) [7]=20

The US Federal Aviation Administration has=
proposed a new rule that
would allow commercial supersonic airliners as =
long as they can reduce
the ground-level impacts of their sonic booms. Th=
e new rule would
require any sonic boom overpressure at the surface to be=
kept below
0.11 pounds per square foot. Critics of the new rule say it d=
oesn't
actually consider loudness or annoyance. Legalization of quieter=

supersonic flights doesn't guarantee a successful comeback for
commerc=
ial supersonic airliners - Concorde's massive fuel consumption
made it di=
fficult to sustain profitable operations.=20

CHINA QUANT FUNDS DRAW BIL=
LIONS AS AI TROUNCES HUMAN TRADERS (7
MINUTE READ) [8]=20

Quants' ass=
ets under management in China have more than doubled in
less than a year =
to over 2.6 trillion yuan. The trend is being fueled
by the rapid adoptio=
n of artificial intelligence. Quants' breadth in
covering thousands of st=
ocks has made it mainstream. Funds are
responding to the frenzy by creati=
ng new investment products.=20

=F0=9F=92=BB=20

PROGRAMMING, DESIGN & =
DATA SCIENCE

UNDERSTANDING IS THE NEW BOTTLENECK (11 MINUTE READ) [9]=
=20

It's still important to understand the code that agents write. Agen=
t
work needs to be understood to verify that it is correct. This
unders=
tanding is required for humans to participate in the creative
process. Th=
is presentation discusses techniques for building human
understanding whe=
n working with AI and moving fast.=20

BUILDING AN INTERN (22 MINUTE REA=
D) [10]=20

'Junior' is an AI intern in Slack. Users can give it informa=
tion to
work with, review the work, and steer the agent in the right
di=
rection. This article discusses the process of developing Junior,
which t=
ook over four months. The full source for the project is
available.=20
=

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MISCELLANEOUS

TLDR IS HIRING A CURATOR FOR TLDR=
AI! (TLDR CURATOR, ~5 HRS/WEEK)=20

Over 1M subscribers read TLDR AI to=
stay on top of the latest in AI
models, research, engineering, and more.=
If you work in AI and want to
help curate it, send your LinkedIn or resu=
me to ai@tldr.tech!=20

META'S INEVITABLE CLOUD (13 MINUTE READ) [11] =

After years of trying to diversify, Meta is still almost entirely an=

ad business. The company's latest solution to that problem is AI. AI
w=
ill be used to supercharge its ads business, but it will also ideally
unl=
ock other businesses. One of these businesses is Meta's newly
announced c=
loud service.=20

CAREER ADVICE IN THE AGE OF AI (11 MINUTE READ) [12] =

The valuable work of the next decade is everything that can't be
g=
raded within the span of model training. Focus on resources that are
trul=
y limited and learn to find problems in addition to solving them.
Work on=
the most ambitious form of a problem and learn to execute well
in the la=
st mile. Put yourself in the right position to see
opportunities. The key=
to unlocking opportunity is to focus on finding
interesting problems and=
delivering extraordinary results.=20

=E2=9A=A1=20

QUICK LINKS

=
A NEW TREND, SMART MODEL ROUTING (3 MINUTE READ) [13]=20

Intelligent ro=
uting is becoming table stakes.=20

MICROSOFT UNVEILS $2.5B =E2=80=98FRO=
NTIER COMPANY' TO EMBED AI ENGINEERS
INSIDE CUSTOMERS (5 MINUTE READ) [14=
]=20

The Microsoft Frontier Company will embed engineers inside custome=
rs
to build and run AI systems.=20

SKILL ENGINEERING AND THE CASE AGA=
INST ONE-SHOT AI DESIGN (7 MINUTE
READ) [15]=20

Agents need domain kn=
owledge, context, and carefully defined ways for
humans to steer the resu=
lt.=20

ANTHROPIC IS DISCUSSING A NEW CUSTOM CHIP WITH SAMSUNG (2 MINUTE=

READ) [16]=20

Anthropic has yet to decide what the chip will be used=
for, how it
will fit into the server, or how powerful it will be.=20

=
CLOUDFLARE SETS DEADLINE TO BLOCK AI CRAWLERS THAT BUNDLE SEARCH WITH
AI=
TRAINING (10 MINUTE READ) [17]=20

AI crawlers have until September to =
separate bots that gather content
for search from those that harvest it f=
or training or be blocked on
pages that carry ads.=20

TESLA CAPS EMPL=
OYEE AI SPENDING AT $200/WEEK EXCEPT FOR GROK (6
MINUTE READ) [18]=20

=
The cap is a sign that even companies betting their future on AI are
str=
uggling to control their costs.=20

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Dan Ni [25] & Stephen Flanders [26]=20
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<div style=3D"display: none; max-height: 0px; overflow: hidden;">The Model =
Y Long Wheelbase is now available in the US and Puerto Rico. The 3-row, 6-s= eat configuration has ample headroom and legroom =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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<h1><strong>TLDR <span id=3D"date">2026-07-03</span></strong></h1>
</div>
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<table style=3D"table-layout: fixed; width:100%;" width=3D"100%"><tbody><tr=
id=3D"sponsy-copy"><td class=3D"container" style=3D"padding: 15px 15px;">
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<strong>Reach 7 million engaged tec=
h professionals (Sponsor)</strong>
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<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Ads get ignored on social media but not=
in TLDR! Reach developers, PMs, marketers, founders and other tech leaders=
where they actually pay attention. <a href=3D"https://tracking.tldrnewslet= ter.com/CL0/https:%2F%2Fadvertise.tldr.tech%2F%3Futm_source=3Dtldr%26utm_me= dium=3Dnewsletter%26utm_campaign=3Dprimary07022026/3/0100019f2781cf53-db3e4= f22-eadc-4b28-bc4c-0a681e0533b3-000000/YIes9URS7hou0OuYL8gwOEs21ym-Idl2BQEE= GyTnI6c=3D452" rel=3D"noopener noreferrer" target=3D"_blank"><span>Learn mo=
re about sponsorship opportunities.</span></a>
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<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;">
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<h1><strong>Big Tech & Startups</strong></h1>
</div>
</div>
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<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=

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<span>
<strong>Model Y Long Wheelbase (3 m= inute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The Model Y Long Wheelbase is now avail= able in the US and Puerto Rico. The 3-row, 6-seat configuration has ample h= eadroom and legroom for all passengers. The trunk fits a 28" and a 20" suit= case each, and the frunk can hold an additional 20" suitcase. More details = about the wheelbase, along with pictures and videos of the vehicle, are ava= ilable in the post.
</span>
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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%2Ftechcrunch.com%2F2026%2F07%2F02%2Fmark-zuckerberg-tells= -staff-that-ai-agents-havent-progressed-as-quickly-as-hed-hoped%2F%3Futm_so= urce=3Dtldrnewsletter/1/0100019f2781cf53-db3e4f22-eadc-4b28-bc4c-0a681e0533= b3-000000/QG7g3ZvIPrm0-D1r6Q8nq4lUk0R2mQJ3jsXQvRx1DkU=3D452">
<span>
<strong>Mark Zuckerberg tells staff=
that AI agents haven't progressed as quickly as he'd hoped (2 minute read)= </strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Mark Zuckerberg told staff during an in= ternal town hall on Thursday that the pace of AI agent development was not = accelerating in the way executives had previously expected it to. He has ap= parently commented that the job cuts earlier this year were not as clean as=
they should have been. The perceived upside of the company's new AI-focuse=
d structure has not come to fruition yet. Zuckerberg says that the company = will begin to see improvements from its AI investments in the next three to=
six months.
</span>
</span>
</div>
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<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =9A=80</span></div>
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<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%2Farstechnica.com%2Fgadgets%2F2026%2F07%2Ffaa-proposal-su= personic-airliners-can-fly-over-us-cities-if-theyre-quiet%2F%3Futm_source= =3Dtldrnewsletter/1/0100019f2781cf53-db3e4f22-eadc-4b28-bc4c-0a681e0533b3-0= 00000/jRo8J9dSi18F_j5h954K1W-tcL1lB5B5flWZOZx22-U=3D452">
<span>
<strong>FAA proposal: Supersonic ai= rliners can fly over US cities if they're quiet (3 minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The US Federal Aviation Administration = has proposed a new rule that would allow commercial supersonic airliners as=
long as they can reduce the ground-level impacts of their sonic booms. The=
new rule would require any sonic boom overpressure at the surface to be ke=
pt below 0.11 pounds per square foot. Critics of the new rule say it doesn'=
t actually consider loudness or annoyance. Legalization of quieter superson=
ic flights doesn't guarantee a successful comeback for commercial supersoni=
c airliners - Concorde's massive fuel consumption made it difficult to sust= ain profitable operations.
</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%2Flinks.tldrnewsletter.com%2F90Bu2b/1/0100019f2781cf53-db= 3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/as3SP-B1BCuSFf3Tfyhkz4lc3BTiFOjIq= WApNEna4DQ=3D452">
<span>
<strong>China Quant Funds Draw Bill= ions as AI Trounces Human Traders (7 minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Quants' assets under management in Chin=
a have more than doubled in less than a year to over 2.6 trillion yuan. The=
trend is being fueled by the rapid adoption of artificial intelligence. Qu= ants' breadth in covering thousands of stocks has made it mainstream. Funds=
are responding to the frenzy by creating new investment products.
</span>
</span>
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</td></tr></tbody></table>

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<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=F0=9F= =92=BB</span></div></div>
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<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%2Fwww.geoffreylitt.com%2F2026%2F07%2F02%2Funderstanding-i= s-the-new-bottleneck.html%3Futm_source=3Dtldrnewsletter/1/0100019f2781cf53-= db3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/mJp2zaBbSHLNiyfAMj-lBVs9ZZa7boF= lXLWskvRIwr4=3D452">
<span>
<strong>Understanding is the new bo= ttleneck (11 minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
It's still important to understand the = code that agents write. Agent work needs to be understood to verify that it=
is correct. This understanding is required for humans to participate in th=
e creative process. This presentation discusses techniques for building hum=
an understanding when working with AI and moving fast.
</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%2Fcra.mr%2Fbuilding-an-intern%2F%3Futm_source=3Dtldrnewsl= etter/1/0100019f2781cf53-db3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/F2v4uR= cD9_jduPvNURH9aVA93Be8jonPdBF1EV6tnR0=3D452">
<span>
<strong>Building an Intern (22 minu=
te read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
'Junior' is an AI intern in Slack. User=
s can give it information to work with, review the work, and steer the agen=
t in the right direction. This article discusses the process of developing = Junior, which took over four months. The full source for the project is ava= ilable.
</span>
</span>
</div>
</td></tr></tbody></table>

</td></tr></tbody></table>

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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 style=3D"text-align: center;"><strong><h1>Miscellaneous</h1></strong><= /div>
</div>
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<table bgcolor=3D"" style=3D"table-layout: fixed; width: 100%;" width=3D"10= 0%"><tbody><tr><td style=3D"padding:0;border-collapse:collapse;border-spaci= ng: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=

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<a href=3D"mailto:ai@tldr.tech?utm_source= =3Dtldrnewsletter">
<span>
<strong>TLDR is hiring a curator fo=
r TLDR AI! (TLDR Curator, ~5 hrs/week)</strong>
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<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Over 1M subscribers read TLDR AI to sta=
y on top of the latest in AI models, research, engineering, and more. If yo=
u work in AI and want to help curate it, send your LinkedIn or resume to <a=
href=3D"mailto:ai@tldr.tech" rel=3D"noopener noreferrer" target=3D"_blank"= ><span>ai@tldr.tech</span></a>!
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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%2Fspyglass.org%2Fmeta-cloud%2F%3Futm_source=3Dtldrnewslet= ter/1/0100019f2781cf53-db3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/kwxftyBd= QjZFW3y6p0AnbmP_ryokoWOFASJp25bkDxE=3D452">
<span>
<strong>Meta's Inevitable Cloud (13=
minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
After years of trying to diversify, Met=
a is still almost entirely an ad business. The company's latest solution to=
that problem is AI. AI will be used to supercharge its ads business, but i=
t will also ideally unlock other businesses. One of these businesses is Met= a's newly announced cloud service.
</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%2Flinks.tldrnewsletter.com%2Fi0xKF0/1/0100019f2781cf53-db= 3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/JKfcNEdciWBAsL4TC8HkdyPJYqkHzlPD2= gkHMhQKXs0=3D452">
<span>
<strong>Career advice in the age of=
AI (11 minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The valuable work of the next decade is=
everything that can't be graded within the span of model training. Focus o=
n resources that are truly limited and learn to find problems in addition t=
o solving them. Work on the most ambitious form of a problem and learn to e= xecute well in the last mile. Put yourself in the right position to see opp= ortunities. The key to unlocking opportunity is to focus on finding interes= ting problems and delivering extraordinary results.
</span>
</span>
</div>
</td></tr></tbody></table>

</td></tr></tbody></table>

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<div class=3D"text-block">
<div style=3D"text-align: center;"><span style=3D"font-size: 36px;">=E2=9A= =A1</span></div></div>
</td></tr></tbody></table>

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<div style=3D"text-align: center;">

<h1><strong>Quick Links</strong></h1>
</div>
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<table bgcolor=3D"" style=3D"table-layout: fixed; width: 100%;" width=3D"10= 0%"><tbody><tr><td style=3D"padding:0;border-collapse:collapse;border-spaci= ng: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%2Fblog.pragmaticengineer.com%2Fthe-pulse-a-new-trend-smar= t-model-routing%2F%3Futm_source=3Dtldrnewsletter/1/0100019f2781cf53-db3e4f2= 2-eadc-4b28-bc4c-0a681e0533b3-000000/E6GW5sCm2sBq_X6aB9EVNzLZsYLPfs5q8Oh-D4= spGEg=3D452">
<span>
<strong>A new trend, smart model ro= uting (3 minute read)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
Intelligent routing is becoming table s= takes.
</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.geekwire.com%2F2026%2Fmicrosoft-announces-2-5b-fron= tier-company-to-embed-ai-engineers-inside-customers%2F%3Futm_source=3Dtldrn= ewsletter/1/0100019f2781cf53-db3e4f22-eadc-4b28-bc4c-0a681e0533b3-000000/06= DvqFjAiJUbAmfVGqy8f9BfYOEPUO_DOI7FQA4EZ9k=3D452">
<span>
<strong>Microsoft unveils $2.5B =E2= =80=98Frontier Company' to embed AI engineers inside customers (5 minute re= ad)</strong>
</span>

<span style=3D"font-family: "Helvetica Neue", Helvetica, Arial, V= erdana, sans-serif;">
The Microsoft Frontier Company will emb=
ed engineers inside customers to build and run AI systems.
</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=

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