Tesla has posted an update to its Optimus program on X, and it is extremely impressive. Over the course of a short video, Tesla showcased the Gen 2 Optimus prototype, which features an updated design, almost humanlike hand movements, and a lighter weight compared to its previous iterations.
In its short demonstration, the Gen 2 Optimus robot could be seen moving its neck and arms like a human being. Tesla noted that the robot features custom-designed actuators and sensors, as well as a 2-DoF actuated neck. The robot features a 30% walking speed boost from its previous iteration, and it is also 10 kg lighter.
There’s a new bot in town ?
Check this out (until the very end)!https://t.co/duFdhwNe3K pic.twitter.com/8pbhwW0WNc— Tesla Optimus (@Tesla_Optimus) December 13, 2023
It also boasts better balance and control, and it is equipped with faster, 11-DoF hands with tactile sensing on all fingers. Tesla demonstrated the Gen 2 Optimus robot’s hand control by having the robot handle an egg in the video. Tesla ended its video with a couple of Gen 2 Optimus robots dancing to some music — quite impressively, all things considered.
Everything in this video is real, no CGI. All real time, nothing sped up. Incredible hardware improvements from the team. https://t.co/y5QNYaZy0M— Julian Ibarz (@julianibarz) December 13, 2023
So smooth were the movements of Gen 2 Optimus in its demonstration that members of the Tesla Bot team have taken to social media to clarify that the footage is real and not CGI. The Tesla Bot team members also highlighted that the robots’ movements in the video were recorded in real-time, not sped up.
Excited to share our latest bot ! Amazing new platform to build the future of humanoid robotics upon. Very proud of the teams who've all been hard at work to get this to happen 🙂
This new generation, which is in effect the 3rd since we started the program less than 2 years ago,… https://t.co/k2kGFsXUuu— Milan Kovac (@_milankovac_) December 13, 2023
The capabilities of the Gen 2 Optimus robot are very impressive, especially considering the fact that Tesla’s humanoid robot program is just over two years old now. Tesla announced its intentions to build a humanoid robot at its first AI Day event in August 2021, and at the time, all the company had was a static model and a man in a robot suit dancing onstage.
Multiple fully Tesla-made Bots now walking around & learning about the real world ?
Join the Tesla AI team → https://t.co/dBhQqg1qya pic.twitter.com/3TZ2znxkfd— Tesla Optimus (@Tesla_Optimus) May 16, 2023
To be fair, the rapid progress of Tesla’s Optimus program was already evident since AI Day 2.0., which was held in September 2022. At the time, Tesla was able to show a development prototype called “Bumblebee,” which was built with off-the-shelf parts, walking on its own without human assistance. The company also revealed a more advanced Optimus robot that’s equipped with Tesla-designed actuators and sensors.
Optimus can now sort objects autonomously ?
Its neural network is trained fully end-to-end: video in, controls out.
Come join to help develop Optimus (& improve its yoga routine ?)
→ https://t.co/dBhQqg1qya pic.twitter.com/1Lrh0dru2r— Tesla Optimus (@Tesla_Optimus) September 23, 2023
The more advanced Optimus prototype, named “Gen 1 Optimus” in Tesla’s recent video announcement, featured smoother movements than “Bumblebee,” but it could not stand on its own feet yet. By May 2023, however, Tesla posted a video on X showing the Gen 1 Optimus walking on its own, and on September 2023, the robot was sorting objects by color. It could even do some yoga moves that required quite a bit of balance.
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Elon Musk
Elon Musk’s X will start using a Tesla-like software update strategy
The initiative seems designed to accelerate updates to the social media platform, while maintaining maximum transparency.
Elon Musk’s social media platform X will adopt a Tesla-esque approach to software updates for its algorithm.
The initiative seems designed to accelerate updates to the social media platform, while maintaining maximum transparency.
X’s updates to its updates
As per Musk in a post on X, the social media company will be making a new algorithm to determine what organic and advertising posts are recommended to users. These updates would then be repeated every four weeks.
“We will make the new 𝕏 algorithm, including all code used to determine what organic and advertising posts are recommended to users, open source in 7 days. This will be repeated every 4 weeks, with comprehensive developer notes, to help you understand what changed,” Musk wrote in his post.
The initiative somewhat mirrors Tesla’s over-the-air update model, where vehicle software is regularly refined and pushed to users with detailed release notes. This should allow users to better understand the details of X’s every update and foster a healthy feedback loop for the social media platform.
xAI and X
X, formerly Twitter, has been acquired by Elon Musk’s artificial intelligence startup, xAI last year. Since then, xAI has seen a rapid rise in valuation. Following the company’s the company’s upsized $20 billion Series E funding round, estimates now suggest that xAI is worth tens about $230 to $235 billion. That’s several times larger than Tesla when Elon Musk received his controversial 2018 CEO Performance Award.
As per xAI, the Series E funding round attracted a diverse group of investors, including Valor Equity Partners, Stepstone Group, Fidelity Management & Research Company, Qatar Investment Authority, MGX, and Baron Capital Group, among others. Strategic partners NVIDIA and Cisco Investments also continued support for building the world’s largest GPU clusters.
News
Tesla FSD Supervised wins MotorTrend’s Best Driver Assistance Award
The decision marks a notable reversal for the publication from prior years, with judges citing major real-world improvements that pushed Tesla’s latest FSD software ahead of every competing ADAS system.
Tesla’s Full Self-Driving (Supervised) system has been named the best driver-assistance technology on the market, earning top honors at the 2026 MotorTrend Best Tech Awards.
The decision marks a notable reversal for the publication from prior years, with judges citing major real-world improvements that pushed Tesla’s latest FSD software ahead of every competing ADAS system. And it wasn’t even close.
MotorTrend reverses course
MotorTrend awarded Tesla FSD (Supervised) its 2026 Best Tech Driver Assistance title after extensive testing of the latest v14 software. The publication acknowledged that it had previously criticized earlier versions of FSD for erratic behavior and near-miss incidents, ultimately favoring rivals such as GM’s Super Cruise in earlier evaluations.
According to MotorTrend, the newest iteration of FSD resolved many of those shortcomings. Testers said v14 showed far smoother behavior in complex urban scenarios, including unprotected left turns, traffic circles, emergency vehicles, and dense city streets. While the system still requires constant driver supervision, judges concluded that no other advanced driver-assistance system currently matches its breadth of capability.
Unlike rival systems that rely on combinations of cameras, radar, lidar, and mapped highways, Tesla’s FSD operates using a camera-only approach and is capable of driving on city streets, rural roads, and freeways. MotorTrend stated that pure utility, the ability to handle nearly all road types, ultimately separated FSD from competitors like Ford BlueCruise, GM Super Cruise, and BMW’s Highway Assistant.
High cost and high capability
MotorTrend also addressed FSD’s pricing, which remains significantly higher than rival systems. Tesla currently charges $8,000 for a one-time purchase or $99 per month for a subscription, compared with far lower upfront and subscription costs from other automakers. The publication noted that the premium is justified given FSD’s unmatched scope and continuous software evolution.
Safety remained a central focus of the evaluation. While testers reported collision-free operation over thousands of miles, they noted ongoing concerns around FSD’s configurable driving modes, including options that allow aggressive driving and speeds beyond posted limits. MotorTrend emphasized that, like all Level 2 systems, FSD still depends on a fully attentive human driver at all times.
Despite those caveats, the publication concluded that Tesla’s rapid software progress fundamentally reshaped the competitive landscape. For drivers seeking the most capable hands-on driver-assistance system available today, MotorTrend concluded Tesla FSD (Supervised) now stands alone at the top.
News
Elon Musk’s Grokipedia surges to 5.6M articles, almost 79% of English Wikipedia
The explosive growth marks a major milestone for the AI-powered online encyclopedia, which was launched by Elon Musk’s xAI just months ago.
Elon Musk’s Grokipedia has grown to an impressive 5,615,201 articles as of today, closing in on 79% of the English Wikipedia’s current total of 7,119,376 articles.
The explosive growth marks a major milestone for the AI-powered online encyclopedia, which was launched by Elon Musk’s xAI just months ago. Needless to say, it would only be a matter of time before Grokipedia exceeds English Wikipedia in sheer volume.
Grokipedia’s rapid growth
xAI’s vision for Grokipedia emphasizes neutrality, while Grok’s reasoning capabilities allow for fast drafting and fact-checking. When Elon Musk announced the initiative in late September 2025, he noted that Grokipedia would be an improvement to Wikipedia because it would be designed to avoid bias.
At the time, Musk noted that Grokipedia “is a necessary step towards the xAI goal of understanding the Universe.”
Grokipedia was launched in late October, and while xAI was careful to list it only as Version 0.1 at the time, the online encyclopedia immediately earned praise. Wikipedia co-founder Larry Sanger highlighted the project’s innovative approach, noting how it leverages AI to fill knowledge gaps and enable rapid updates. Netizens also observed how Grokipedia tends to present articles in a more objective manner compared to Wikipedia, which is edited by humans.
Elon Musk’s ambitious plans
With 5,615,201 total articles, Grokipedia has now grown to almost 79% of English Wikipedia’s article base. This is incredibly quick, though Grokipedia remains text-only for now. xAI, for its part, has now updated the online encyclopedia’s iteration to v0.2.
Elon Musk has shared bold ideas for Grokipedia, including sending a record of the entire knowledge base to space as part of xAI’s mission to preserve and expand human understanding. At some point, Musk stated that Grokipedia will be renamed to Encyclopedia Galactica, and it will be sent to the cosmos.
“When Grokipedia is good enough (long way to go), we will change the name to Encyclopedia Galactica. It will be an open source distillation of all knowledge, including audio, images and video. Join xAI to help build the sci-fi version of the Library of Alexandria!” Musk wrote, adding in a later post that “Copies will be etched in stone and sent to the Moon, Mars and beyond. This time, it will not be lost.”