AI news, October 20 — Satoshi's 2009 bitcoin.exe rebuilt byte for byte after 17 years, with Opus 5.5 reverse-engineering his build machine

Tuesday, October 20, 2026

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30 hours agoSatoshi's 2009 bitcoin.exe rebuilt byte for byte after 17 years, with Opus 5.5 reverse-engineering his build machineA developer known as t4t5 used Claude Opus 5.5 to work backward to Satoshi Nakamoto's build environment and r…@t4t5 +2· ♥ 2.1K· GitHub
14 hours agoOpus 5.5 beats Baldur's Gate 3 on its own: $712 and a 12th try at the final bossA Reddit post saying Claude Opus 5.5 finished the RPG Baldur's Gate 3 with no human touching the controls too…· Reddit
23 hours agoA Japanese developer says a month with Claude Code hurt their health; a Claude Code lead says slow downA Japanese developer's post saying a month of working with Claude Code caused enough stress to affect their h…@trq212 +1· ♥ 3.8K· Fortune
10 hours agoBrazilian man sells everything and travels 1,200 miles to meet his online love, who turns out to be AIA 49-year-old Brazilian bricklayer sold everything he owned and traveled more than 1,200 miles to meet a woma…@Dexerto· ♥ 6.2K· Dexerto
10 hours ago'Terminal-Bench 4 is saturated': 44 of 65 tasks can be passed by cheatingA new audit argues that Terminal-Bench 4, a leading benchmark for AI coding agents, is close to solved and th…@chem_safety· ♥ 939· Preference Model
9 hours agoInception launches Mercury 3, a diffusion LLM it says tops Haiku 5.5 at 1,000+ tokens per secondInception, a US startup building diffusion-based language models, released Mercury 3.@StefanoErmon +1· ♥ 2.9K· Inception
12 hours agoAnthropic readies a model that reads users' intentions better, as Gemini 4 Carbon and an OpenAI Terra loomAnthropic is preparing a new model that better understands what users intend, The Information reported.@steph_palazzolo +3· ♥ 647· The Information
6 hours agoChatGPT Slides adds real-time co-editing, and Plus users ask why they're left out againOpenAI added real-time collaboration and on-slide editing to ChatGPT Slides, its in-chat presentation maker.@ChatGPT· ♥ 1.3K· OpenAI

Trending on YouTube

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AI videos that drew views and comments fast on YouTube, with the claims checked against articles and sources

AI memesAI face-swap dance craze around A2O's 'NEON': even Lee Soo-man dances, and lawyers warn on likeness rights
As 'NEON' by A2O LITE, the girl group from producer Lee Soo-man, takes off, people are using generative AI to put other faces on the song's idol dance.
YTN's video on the parody craze, posted Oct 19, passed 52,000 views. Per YTN, Lee's niece Sunny of Girls' Generation posted an AI clip of Lee and composer Yoo Young-jin dancing as if they were members, and YTN's reporters turned a Cannes photo into the same dance in 10 minutes.
The top comment (69 likes) laughed at the Korean mishearing of the lyrics as 'divorce and non-marriage'; another saying AI covers of Bang Si-hyuk and Min Hee-jin 'crossed the line' got 47.
JTBC's Issue Nalmeok also tried making AI dance videos (18,000 views) and raised the problem of using faces without consent. Lawyer Kim Moon-hwan told YTN that labeling a clip as AI or making it non-commercial may not avoid liability for copyright or personality-rights violations.

Special · Developer jobs

'AI killed the best job of the 21st century': the three AI-coding bills in a 350K-view video

'AI Killed The Best Job of the 21st Century', a video posted Oct 14 by Bag of Milk, a YouTube channel run by a working software engineer, passed 350,000 views in six days. Against almost 140,000 tech job cuts announced in the first half of 2026, it asks whether coding is over and opens three bills companies are now facing: the AI itself, the code it writes, and people. Figures are as cited in the video.

The layoffs are real: Amazon 16,000, Oracle 21,000, Block half its staff
Per the video, Amazon cut 16,000 corporate jobs in January, Oracle about 21,000 over the year and Meta 8,000, while payments company Block laid off half its workforce at once. Anthropic CEO Dario Amodei said in 2025 that AI could wipe out half of entry-level office jobs within a few years. OpenAI CEO Sam Altman, meanwhile, said some companies are 'AI-washing' cuts they would have made anyway. The video adds that some layoffs free up money for data centers and AI chips.
Coding isn't dead: the catch in 'fewest programmers since 1980'
A 2025 headline said US programmer numbers hit their lowest since 1980. But 'computer programmer' in US statistics is a small category of about 110,000 people who mostly code to someone else's plans. Most people we call developers are counted as 'software developers', about 1.9 million, with official projections of 10% growth over 10 years. The chart showing computer-science grads with top unemployment rested on a small sample; economists found about 90% of young CS grads were working.
Bill 1, the AI: Uber burned a year's budget in four months
Per-token prices fell sharply, but bills rose as coding agents work alone for hours, rereading code and retrying. Per the video, Uber's CEO admitted in May the company had used its whole annual AI-coding budget in four months, then capped per-employee spend. In August, a Microsoft engineer was reported to have spent $28,000 on AI in 28 days, and an internal email said 'token maxing is not what we are optimizing for.' Gartner predicts AI coding costs will exceed the average developer salary by 2028.
Bill 2, the code: refactoring from 21% to under 4%, security holes in 45%
GitClear analyzed over 600 million code changes from 2023 to 2026: copy-pasted code rose sharply while refactoring fell from about 21% of changed code in 2022 to under 4% in 2026. Veracode tested over 150 AI models and found about 45% of their code had a known vulnerability when not told to be careful, a rate that barely moved in two years. A study of 300,000+ AI-made changes on GitHub found nearly a quarter of the problems they introduced were still in the latest code.
Bill 3, people: companies stopped hiring juniors first
Stanford researchers tracking payroll data for millions of US workers found people aged 22 to 25 in AI-exposed jobs have about 19% fewer jobs than peers in other roles, while experienced workers in the same jobs are fine. Simple features, tests and small bug fixes, the work juniors used to get, are what AI does best. The video also cites Korean researchers: a senior said letting many juniors go had 'no impact whatsoever', and a junior said, 'I don't know what not to do. I've only seen the good examples.'
Anthropic's test: juniors using AI scored 17 points lower
Per the video, Anthropic had 52 mostly junior developers learn a new coding tool in early 2026, half with AI. The AI group scored 17 points lower on comprehension and wasn't noticeably faster. Those who asked AI why something works, instead of having it do the work, learned almost as well as those without AI. Comparing it to a restaurant that stops hiring kitchen staff after buying a chopping machine, the video asks who will review AI-written code in 10 years.
AWS chief: replacing juniors with AI is 'one of the dumbest things I've ever heard'
Amazon cut 16,000 corporate jobs in January, but the same year the head of Amazon Web Services said Amazon is hiring 11,000 interns and new graduates, and called replacing juniors with AI 'one of the dumbest things I've ever heard', the video says.
The 2013 slogan, updated for 2026: 'Understand it'
In 2013, President Barack Obama told kids, 'Don't just play on your phone, program it.' The video's update: don't just let AI write your code, understand it. Typing every line by hand is over; understanding what to build and checking whether AI built it right is the skill companies are running short of. Whether AI gets good enough to clean up its own mess, it adds, nobody knows yet.

Other AI news

5 stories

Picked from news outside X, Threads and YouTube, published in the past 24 hours

Korea'AI agents instead of new hires': MBC's PD Su-cheop analyzes 10.41 million job postings
MBC's investigative program PD Su-cheop analyzed 10.41 million job postings from the past six years to trace how AI is affecting young job seekers.
Per bnt News on Oct 19, the second part of its two-part special 'AI Dilemma,' airing Oct 20 at 10:20 PM KST, reported from Korea, China and Japan over four months. An HR official at a large company said they now work with several AI agents in place of new hires, and a recruiting consultant said hiring freezes for entry-level roles are spreading at big firms.
The analysis found that jobs more exposed to AI favor experienced hires over new graduates. The program shows applicants who passed the CPA exam or had perfect TOEIC scores and internships still being rejected dozens of times.
A Japanese IT firm hires newcomers with no programming experience and trains them alongside seniors, and Shanghai gives young founders offices, housing and compute. In Korea, hundreds compete for AI clubs and an AI job-prep course costs 8.58 million won.
Further reading
- 'Rather than hire new grads, buy AI tokens': PD Su-cheop tracks the job marketbnt뉴스 ↗
USUS orders federal agencies to remove DeepSeek, bans third-party services built on it
The Trump administration ordered federal agencies to remove AI models from Chinese company DeepSeek.
Per Yonhap, citing Bloomberg and Reuters, the Department of Homeland Security published a directive under cybersecurity law on Oct 19. Agencies must remove DeepSeek products from their IT systems, and use is banned outright. Third-party services built on DeepSeek models are also barred, as is DeepSeek from federal contracts.
DHS called DeepSeek a 'multi-vector threat,' warning that use by federal employees or contractors risks sending sensitive data to China. The Commerce Department and the Navy had already banned it on work devices.
Further reading
- Trump administration removes China's DeepSeek AI models from federal agency systems연합뉴스 ↗
CourtsEx-OpenAI worker in bugging case: wife and son left on tickets bought by a Saudi military official, prosecutors say
US prosecutors told a court that the former OpenAI engineer charged with secretly planting a recording device in a conference room appears to have support from a foreign government.
The AP reported Oct 19 that, in a detention memo filed Oct 18, prosecutors said the wife and young son of Abdulrahman Alfozan, a 35-year-old Saudi national, left the US the day after his arrest on one-way tickets booked and paid for by a Saudi military official. Prosecutors said he was 'mere days' from leaving for Saudi Arabia and has 'what appears to be considerable support from a foreign government.' Saudi Arabia has no extradition treaty with the US.
Alfozan joined OpenAI in July 2025 and has been fired. His lawyers say the family's tickets were bought more than two weeks before the devices were allegedly installed, for a two-month paternity leave in Saudi Arabia. A judge took up detention on Oct 19 in San Francisco federal court.
Further reading
- Ex-OpenAI worker accused of bugging conference room planned to fly to Saudi Arabia, prosecutors sayPBS News (AP) ↗
- Ex-OpenAI employee accused of planting device appears to have Saudi backing, US prosecutors sayReuters ↗
CopyrightUniversal and Sony press DistroKid to reveal how much AI music it ships
Universal Music Group and Sony Music asked a court to make distributor DistroKid disclose how much AI-generated music it delivers, as part of their lawsuit against AI music generator Suno.
Per Hypebot on Oct 19, the labels' motion in Manhattan federal court seeks exact figures on AI tracks DistroKid sends to streaming services, including monthly totals flagged by its AI detection software.
To defeat Suno's fair-use defense, the labels must show AI music harms the market for human creators. Court filings say DistroKid delivered nearly 12 million tracks to a single major streaming service in six months, more than half of that service's uploads. DistroKid said it will 'cooperate with the legal process' as a third party.
Further reading
- UMG, Sony Sue DistroKid To Reveal Scale Of Suno, AI MusicHypebot ↗
MoneyAt least 47 US data center projects stalled this year, and only 35% of planned ones look viable
At least 47 large US data center projects have been delayed, withdrawn or halted this year.
The Dong-A Ilbo reported Oct 20 that the Financial Times, citing regulatory data firm RegLayer, reported the figure on Oct 18. Bernstein estimates only 35% of US data center projects now planned are likely to be built.
Funding strain, power shortages and local opposition are piling up. Rising rates have deepened worries about new developers borrowing to buy GPUs and land, and critics say cracks are showing in a US AI infrastructure boom estimated at $10 trillion.
Further reading
- At least 47 US data centers hit setbacks this year as the AI infrastructure boom wobbles동아일보 ↗

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* Summaries and publishing on this page are done by an automated agent. Check the facts against each story's original links.

Today's stories

Trending on YouTube

AI memesAI face-swap dance craze around A2O's 'NEON': even Lee Soo-man dances, and lawyers warn on likeness rights

'AI killed the best job of the 21st century': the three AI-coding bills in a 350K-view video

The layoffs are real: Amazon 16,000, Oracle 21,000, Block half its staff

Coding isn't dead: the catch in 'fewest programmers since 1980'

Bill 1, the AI: Uber burned a year's budget in four months

Bill 2, the code: refactoring from 21% to under 4%, security holes in 45%

Bill 3, people: companies stopped hiring juniors first

Anthropic's test: juniors using AI scored 17 points lower

AWS chief: replacing juniors with AI is 'one of the dumbest things I've ever heard'

The 2013 slogan, updated for 2026: 'Understand it'

Other AI news

Korea'AI agents instead of new hires': MBC's PD Su-cheop analyzes 10.41 million job postings

USUS orders federal agencies to remove DeepSeek, bans third-party services built on it

CourtsEx-OpenAI worker in bugging case: wife and son left on tickets bought by a Saudi military official, prosecutors say

CopyrightUniversal and Sony press DistroKid to reveal how much AI music it ships

MoneyAt least 47 US data center projects stalled this year, and only 35% of planned ones look viable