Subj : GPT-5.2 🤖, Rivian autonomy 🛻, compound engineering 👨‍💻 To : All From : TLDR Date : Fri Dec 12 2025 11:23 am --Woc67yw2 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable GPT-5.2 has been released in three variants: Instant, Thinking, and Pro. = 5.2 is designed to unlock more economic value for people=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 [Wispr] [4] TLDR 2025-12-12 THE AI VOICE TOOL T= HAT HELPS YOU MOVE FASTER EVERYWHERE (SPONSOR) [4] For 150 years, = we've been stuck typing. Wispr Flow [4] ends that era. It turns your v= oice into clean, perfectly formatted writing the moment you stop speaking= =E2=80=94 in Slack, Notion, Gmail, ChatGPT, or anywhere you already work= .. Flow learns your phrasing [4], edits as you speak, and helps you mov= e 4=C3=97 faster across every app =E2=80=94 from enhancing GPT prompts to= capturing ideas or writing docs in seconds. It's how builders, foun= ders, and vibe coders stay in flow all day. Less typing. More creating= .. TRY WISPR FLOW FOR FREE =E2=86=92 [4] =F0=9F=93=B1=20 BIG TE= CH & STARTUPS OPENAI RELEASES GPT-5.2 AFTER =E2=80=9CCODE RED= =E2=80=9D GOOGLE THREAT ALERT (6 MINUTE READ) [5]=20 GPT-5.2 has been= released in three variants: Instant, Thinking, and Pro. 5.2 is designed = to unlock more economic value for people. It features a 400,000-token con= text window and a knowledge cutoff date of August 31. GPT-5.1 will remain= available in ChatGPT for paid users for three months. GPT-5.2 is OpenAI'= s third major model release since August.=20 GOOGLE ANNOUNCES EXPERIM= ENTAL =E2=80=98DISCO' BROWSER WITH =E2=80=98GENTABS' POWERED BY GEMINI 3 = (2 MINUTE READ) [6]=20 Google Labs' Disco browser features a Gemini 3-p= owered 'GenTab' that can build interactive web applications to help users= complete tasks. It can look at open tabs and chat history to determine w= hat tool best serves a prompt. Every generative element ties back to the = web and will link to the original sources. The most compelling ideas from= Disco may one day make their way into Chrome. A link to the waitlist t= o try Disco is available in the article.=20 =F0=9F=9A=80=20 SCIENCE &= FUTURISTIC TECHNOLOGY RIVIAN ANNOUNCES NEW AI TECH, CHIP, AND ROBOTA= XI AMBITIONS (8 MINUTE READ) [7]=20 Rivian has developed a custom chi= p, a car computer, and new artificial intelligence models to bring autono= mous features to its vehicles. The company plans to roll out a subscripti= on in early 2026 that will provide continuously expanding capabilities po= wered by Rivian Autonomy Processors and autonomy computers. A near-future= update will include a 'Universal Hands-Free' capability that will enab= le Rivian customers to drive hands-free on more than 3.5 million miles of= roads in North America.=20 AI HACKERS ARE COMING DANGEROUSLY CLOSE TO = BEATING HUMANS (8 MINUTE READ) [8]=20 AI hacking tools are now surpas= sing some human hackers. Stanford's Artemis AI bot beat all except one of= the 10 professional penetration testers in a test of its abilities. It f= ound bugs at lightning speed while running at under $60 an hour. However,= about 18% of the bugs it found were false positives. It also missed an o= bvious bug that most of the human testers spotted.=20 =F0=9F=92=BB=20 = PROGRAMMING, DESIGN & DATA SCIENCE CUT QA CYCLES FROM HOURS TO MIN= UTES WITH AUTOMATED TESTING (SPONSOR) [9]=20 If slow QA cycles are ho= lding your team back from releasing faster, try QA Wolf [10]. Their fully= managed, AI-native service delivers 80% AUTOMATED E2E TEST COVERAGE in w= eeks and helps teams SHIP 5=C3=97 FASTER by cutting QA cycles from hours = to minutes. With unlimited parallel runs, 24-hour test maintenance, and z= ero flakes, teams like Drata [11] have achieved 86% FASTER QA CYCLES. = Schedule a demo to learn more =E2=86=92 [12] COMPOUND ENGINEERING:= HOW EVERY CODES WITH AGENTS (13 MINUTE READ) [13]=20 In traditional = engineering, each feature makes the next feature harder to build because = of new edge cases, interdependencies, and issues. In compound engineering= , each feature makes the next feature easier to build because compound en= gineering creates a learning loop for agents and team members so that eac= h bug, failed test, or insight gets documented and used by future agents.= AI's knowledge of the codebase grows along with it, making future develo= pment work faster. This post provides a high-level sense of how to start = compound engineering with AI.=20 AN SVG IS ALL YOU NEED (4 MINUTE REA= D) [14]=20 SVGs are vector graphics in a simple XML format. They are su= pported on almost every device and platform. With embeddable scripts to m= ake them interactive, SVGs are way more capable than many people realize.= It is entirely feasible to implement an entire data analysis pipeline = in an SVG. A completely self-contained SVG file can fetch data from a ver= sioned repository, process that data, and generate visualizations without= any server-side magic required.=20 =F0=9F=8E=81=20 MISCELLANEOUS = SOCIAL-MEDIA BAN IMPOSES BRAVE NEW WORLD ON AUSTRALIAN TEENS (8 MINUT= E READ) [15]=20 Several social media platforms are now required to shut= down the accounts of teens under 16 in Australia under a new law intende= d to shelter children from the mental-health risks of life online. These= companies are now required to take reasonable steps to enforce the new= rules under threat of penalty. Parents and children won't be fined. Au= stralia isn't alone in its effort - Malaysia, the EU, New Zealand, Florid= a, and other regions are also discussing similar restrictions.=20 DISNE= Y TO INVEST $1 BILLION IN OPENAI AND LICENSE CHARACTERS FOR USE IN CHATGP= T, SORA (7 MINUTE READ) [16]=20 Disney is investing $1 billion into Ope= nAI. The three-year licensing deal will allow OpenAI's users to generate = videos with Disney's characters and properties in them. The agreement inc= ludes provisions that limit what Disney characters can do in generated vi= deos. The partnership is the result of nearly two years of talks between = the two companies.=20 =E2=9A=A1=20 QUICK LINKS COINBASE READY= TO LAUNCH PREDICTION MARKETS, TOKENIZED STOCKS (2 MINUTE READ) [17]=20 = Coinbase plans to launch the prediction markets and tokenized equitie= s at a showcase on December 17.=20 ANTHROPIC'S VISION ADVANTAGE IS A LO= T LIKE APPLE'S FROM THE 2010S (2 MINUTE READ) [18]=20 Apple created a= n ecosystem where the tech got out of the way and let people create and w= ork.=20 MY FAMILY'S EMBRYO SELECTION PROCESS (15 MINUTE READ) [19]=20 = Herasight is a startup that offers embryo forecasts on disease risk a= nd IQ.=20 GET 30% OFF SEMRUSH ONE TO MONITOR YOUR BRAND EVERYWHERE PEOP= LE ARE SEARCHING (SPONSOR) [20]=20 Planning to improve visibility in = AI+SEO in 2026? Don't miss out on Semrush's EoY offer. Track keywords, LL= M mentions, and impact in one platform. 30% off for new customers [20] = CRYPTO MOGUL DO KWON SENTENCED TO 15 YEARS IN PRISON FOR $40 BILLION= STABLECOIN FRAUD (4 MINUTE READ) [21]=20 Do Kwon's offense caused re= al people to lose $40 billion in real money.=20 HARDWARE IS A FRUIT (= 20 MINUTE READ) [22]=20 Hardware is the nature layer, a firm base that = creates room for freedom and experimentation at the higher layers.=20 = THE POLYGLOT NEUROSCIENTIST RESOLVING HOW THE BRAIN PARSES LANGUAGE (15 = MINUTE READ) [23]=20 There is evidence of a language network in the hum= an brain with similarities to large language models.=20 Want to advert= ise in TLDR? =F0=9F=93=B0 If your company is interested in reaching a= n audience of tech executives, decision-makers and engineers, you may wan= t to ADVERTISE WITH US [24].=20 Want to work at TLDR? =F0=9F=92=BC = APPLY HERE [25], CREATE YOUR OWN ROLE [26] or send a friend's resume = to jobs@tldr.tech and get $1k if we hire them! TLDR is one of INC.'S BEST= BOOTSTRAPPED BUSINESSES [27] of 2025.=20 If you have any comments or f= eedback, just respond to this email!=20 Thanks for reading,=20 Dan Ni [2= 8] & Stephen Flanders [29]=20 Manage your subscriptions [30] to our oth= er newsletters on tech, startups, and programming. Or if TLDR isn't for y= ou, please unsubscribe [31].=20 =20 Links: ------ [1] https://t= ldr.tech/signup?utm_source=3Dtldr [2] https://advertise.tldr.tech/?utm_so= urce=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3Dadvertisetopnav [3] ht= tps://a.tldrnewsletter.com/web-version?ep=3D1&lc=3D265280dc-d4e0-11f0-a661-= 1b9fa34a893d&p=3Dc9a84662-d739-11f0-8d99-e7df1ec3cf27&pt=3Dcampaign&t=3D176= 5538589&s=3Dbce59f0e49d7b7f3b84e1026538a8ea4335ffa47af92a6187c86fe1f162975b= b [4] https://ref.wisprflow.ai/tldr [5] https://arstechnica.com/informa= tion-technology/2025/12/openai-releases-gpt-5-2-after-code-red-google-threa= t-alert/?utm_source=3Dtldrnewsletter [6] https://9to5google.com/2025/12/1= 1/google-disco-gentab-browser/?utm_source=3Dtldrnewsletter [7] https://ww= w.cnbc.com/2025/12/11/rivian-autonomy-ai-day.html?utm_source=3Dtldrnewslett= er [8] https://links.tldrnewsletter.com/3Z8Egj [9] https://www.qawolf.c= om/?utm_source=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3DACQ_All_Demo_C= onversions__NewsletterAudience_-_Newsletter_CutQACycles_20251212-None_Exper= iment-FALSE&utm_term=3Dheadline-CutQACyclesFromHoursToMintuesWithAutomatedT= esting&utm_content=3DCutQACycles_ScheduleADemoToLearnMore_None_Headline%3AC= utQACyclesFromHoursToMinutesWithAutomatedTesting____Newsletter-SecondaryPla= cement_20251212_v1_ [10] https://www.qawolf.com/?utm_source=3Dtldr&utm_me= dium=3Dnewsletter&utm_campaign=3DACQ_All_Demo_Conversions__NewsletterAudien= ce_-_Newsletter_CutQACycles_20251212-None_Experiment-FALSE&utm_term=3Dbody-= QAWolf&utm_content=3DCutQACycles_ScheduleADemoToLearnMore_None_Headline%3AC= utQACyclesFromHoursToMinutesWithAutomatedTesting____Newsletter-SecondaryPla= cement_20251212_v1_ [11] https://www.qawolf.com/case-studies/drata?utm_so= urce=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3DACQ_All_Demo_Conversions= __NewsletterAudience_-_Newsletter_CutQACycles_20251212-None_Experiment-FALS= E&utm_term=3Dbody-Drata&utm_content=3DCutQACycles_ScheduleADemoToLearnMore_= None_Headline%3ACutQACyclesFromHoursToMinutesWithAutomatedTesting____Newsle= tter-SecondaryPlacement_20251212_v1_ [12] https://www.qawolf.com?utm_sour= ce=3Dtldr&utm_medium=3Dnewsletter&utm_campaign=3DACQ_All_Demo_Conversions__= NewsletterAudience_-_Newsletter_CutQACycles_20251212-None_Experiment-FALSE&= utm_term=3Dcta-ScheduleADemoToLearnMore&utm_content=3DCutQACycles_ScheduleA= DemoToLearnMore_None_Headline%3ACutQACyclesFromHoursToMinutesWithAutomatedT= esting____Newsletter-SecondaryPlacement_20251212_v1_ [13] https://every.t= o/chain-of-thought/compound-engineering-how-every-codes-with-agents?utm_sou= rce=3Dtldrnewsletter [14] https://jon.recoil.org/blog/2025/12/an-svg-is-a= ll-you-need.html?utm_source=3Dtldrnewsletter [15] https://links.tldrnewsl= etter.com/rxIDOZ [16] https://links.tldrnewsletter.com/xW9CHz [17] http= s://links.tldrnewsletter.com/cB5IXt [18] https://danielmiessler.com/blog/= anthropics-vision-advantage?utm_source=3Dtldrnewsletter [19] https://nudg= edice.substack.com/p/our-son?utm_source=3Dtldrnewsletter [20] https://www= ..semrush.com/lp/tldr-offer/en?utm_source=3Dtldr_main&utm_medium=3Demail&utm= _campaign=3Dtldr_quicklinks_1212 [21] https://www.cnn.com/2025/12/11/busi= ness/cryptocurrency-do-kwon-fraud-sentencing-intl-hnk?utm_source=3Dtldrnews= letter [22] https://www.notboring.co/p/hardware-is-a-fruit?utm_source=3Dt= ldrnewsletter [23] https://www.quantamagazine.org/the-polyglot-neuroscien= tist-resolving-how-the-brain-parses-language-20251205/?utm_source=3Dtldrnew= sletter [24] https://advertise.tldr.tech/?utm_source=3Dtldr&utm_medium=3D= newsletter&utm_campaign=3Dadvertisecta [25] https://jobs.ashbyhq.com/tldr= ..tech [26] https://jobs.ashbyhq.com/tldr.tech/c227b917-a6a4-40ce-8950-d3e= 165357871 [27] https://www.linkedin.com/feed/update/urn:li:activity:74016= 99691039830016/ [28] https://twitter.com/tldrdan [29] https://twitter.c= om/SteveFlanders22 [30] https://tldr.tech/tech/manage?email=3Dtldrnewslet= ter%40synchro.net [31] https://a.tldrnewsletter.com/unsubscribe?ep=3D1&l= =3Dcfa2d55a-b7be-11e8-a3c9-06b79b628af2&lc=3D265280dc-d4e0-11f0-a661-1b9fa3= 4a893d&p=3Dc9a84662-d739-11f0-8d99-e7df1ec3cf27&pt=3Dcampaign&pv=3D4&spa=3D= 1765537300&t=3D1765538589&s=3D28a87348d2a5a47f5c387098b9b2b348e144ba3c1c8a6= 847a933b7b008a02e46 --Woc67yw2 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable TLDR
GPT-5.2 ha= s been released in three variants: Instant, Thinking, and Pro. 5.2 is desi= gned to unlock more economic value for people =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 

TLDR

Together With 3D"Wispr"

TLDR 2025-12-12

=F0=9F= =93=B1

Big Tech & Startups

OpenAI releases GPT-5.2 aft= er =E2=80=9Ccode red=E2=80=9D Google threat alert (6 minute read)

GPT-5.2 has been released in three vari= ants: Instant, Thinking, and Pro. 5.2 is designed to unlock more economic = value for people. It features a 400,000-token context window and a knowledg= e cutoff date of August 31. GPT-5.1 will remain available in ChatGPT for pa= id users for three months. GPT-5.2 is OpenAI's third major model release si= nce August.
Google announces experiment= al =E2=80=98Disco' browser with =E2=80=98GenTabs' powered by Gemini 3 (2 mi= nute read)

Google Labs' Disco browser features a G= emini 3-powered 'GenTab' that can build interactive web applications to hel= p users complete tasks. It can look at open tabs and chat history to determ= ine what tool best serves a prompt. Every generative element ties back to t= he web and will link to the original sources. The most compelling ideas fro= m Disco may one day make their way into Chrome. A link to the waitlist to t= ry Disco is available in the article.
=F0=9F= =9A=80

Science & Futuristic Technology

Rivian announces new AI tec= h, chip, and robotaxi ambitions (8 minute read)

Rivian has developed a custom chip, a c= ar computer, and new artificial intelligence models to bring autonomous fea= tures to its vehicles. The company plans to roll out a subscription in earl= y 2026 that will provide continuously expanding capabilities powered by Riv= ian Autonomy Processors and autonomy computers. A near-future update will i= nclude a 'Universal Hands-Free' capability that will enable Rivian customer= s to drive hands-free on more than 3.5 million miles of roads in North Amer= ica.
AI Hackers Are Coming Dange= rously Close to Beating Humans (8 minute read)

AI hacking tools are now surpassing som= e human hackers. Stanford's Artemis AI bot beat all except one of the 10 pr= ofessional penetration testers in a test of its abilities. It found bugs at= lightning speed while running at under $60 an hour. However, about 18% of = the bugs it found were false positives. It also missed an obvious bug that = most of the human testers spotted.
=F0=9F= =92=BB

Programming, Design & Data Science

Cut QA Cycles From Hours to= Minutes With Automated Testing (Sponsor)

If slow QA cycles are holding your team= back from releasing faster, try QA Wolf. Their full= y managed, AI-native service delivers 80% automated E2E test covera= ge in weeks and helps teams ship 5=C3=97 faster b= y cutting QA cycles from hours to minutes. With unlimited parallel runs, 24= -hour test maintenance, and zero flakes, teams like Drata have achieved 86% faster QA cycles.

Schedule a demo to learn more =E2=86=92=

Compound Engineering: How E= very Codes With Agents (13 minute read)

In traditional engineering, each featur= e makes the next feature harder to build because of new edge cases, interde= pendencies, and issues. In compound engineering, each feature makes the nex= t feature easier to build because compound engineering creates a learning l= oop for agents and team members so that each bug, failed test, or insight g= ets documented and used by future agents. AI's knowledge of the codebase gr= ows along with it, making future development work faster. This post provide= s a high-level sense of how to start compound engineering with AI.
An SVG is all you need (4 m= inute read)

SVGs are vector graphics in a simple XM= L format. They are supported on almost every device and platform. With embe= ddable scripts to make them interactive, SVGs are way more capable than man= y people realize. It is entirely feasible to implement an entire data analy= sis pipeline in an SVG. A completely self-contained SVG file can fetch data= from a versioned repository, process that data, and generate visualization= s without any server-side magic required.
=F0=9F= =8E=81

Miscellaneous

<= /div>
Social-Media Ban Imposes Br= ave New World on Australian Teens (8 minute read)

Several social media platforms are now = required to shut down the accounts of teens under 16 in Australia under a n= ew law intended to shelter children from the mental-health risks of life on= line. These companies are now required to take reasonable steps to enforce = the new rules under threat of penalty. Parents and children won't be fined.= Australia isn't alone in its effort - Malaysia, the EU, New Zealand, Flori= da, and other regions are also discussing similar restrictions.
Disney to Invest $1 Billion= in OpenAI and License Characters for Use in ChatGPT, Sora (7 minute read)<= /strong>

Disney is investing $1 billion into Ope= nAI. The three-year licensing deal will allow OpenAI's users to generate vi= deos with Disney's characters and properties in them. The agreement include= s provisions that limit what Disney characters can do in generated videos. = The partnership is the result of nearly two years of talks between the two = companies.
=E2=9A= =A1

Quick Links

Coinbase Ready to Launch Pr= ediction Markets, Tokenized Stocks (2 minute read)

Coinbase plans to launch the prediction= markets and tokenized equities at a showcase on December 17.
Anthropic's Vision Advantag= e is a Lot Like Apple's from the 2010s (2 minute read)

Apple created an ecosystem where the te= ch got out of the way and let people create and work.
My Family's Embryo Selectio= n Process (15 minute read)

Herasight is a startup that offers embr= yo forecasts on disease risk and IQ.
Get 30% off Semrush One to = monitor your brand everywhere people are searching (Sponsor)

Planning to improve visibility in AI+SE= O in 2026? Don't miss out on Semrush's EoY offer. Track keywords, LLM menti= ons, and impact in one platform. 30% off for new customers
Hardware is a Fruit (20 min= ute read)

Hardware is the nature layer, a firm ba= se that creates room for freedom and experimentation at the higher layers.
The Polyglot Neuroscientist= Resolving How the Brain Parses Language (15 minute read)

There is evidence of a language network= in the human brain with similarities to large language models.

Want to advertise in TLDR? =F0=9F=93=B0

If your company is interested in reaching an audience of tech executives, d= ecision-makers and engineers, you may want to advertise with us.

Want to work at TLDR? =F0=9F=92=BC

Apply here, create your own role or send a friend's resume to jobs@tldr.tech an= d get $1k if we hire them! TLDR is one of Inc.'s Best Bootstrapped businesses = of 2025.

If you have any comments or feedback, just respond to this email!

Thanks for reading,
Dan Ni &a= mp; Stephen = Flanders


Manage your subscriptions to our other newsletters o= n tech, startups, and programming. Or if TLDR isn't for you, please unsubscribe.
3D"" --Woc67yw2-- .