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EXCLUSIVE: Neuralink dragged into humane testing lawsuit – Timeline of Events
Neuralink has been dragged into a lawsuit by the Physicians Committee for Responsible Medicine against the University of California at Davis. The lawsuit, which is amended from its initial filing date of May 2021, seeks to have UC Davis release images and video of inhumanely-treated test subjects, including monkeys, who died after participating in some trials of Neuralink-sponsored research for the development of neural interface implant devices. We have put together an exclusive timeline of events based on interviews and an examination of over 700 pages of documents that UC Davis was required to turn over to the PCRM.
The Physicians Committee for Responsible Medicine (PCRM) is a nonprofit organization with more than 17,000 doctor members. It filed a formal complaint with the United States Department of Agriculture today, claiming UC Davis and Neuralink staff violated the federal Animal Welfare Act related to experiments performed on 23 monkeys. Neuralink paid more than $1.4 million to UC Davis to carry out the experiments.
The PCRM said in a press release that Neuralink and the University “failed to provide dying monkeys with adequate veterinary care, used an unapproved substance known as “Bioglue” that killed monkeys by destroying portions of their brains, and failed to provide for the psychological well-being of monkeys assigned to the experiment.”
In an exclusive interview with Teslarati earlier today, Jeremy Beckham, MPA, MPH, PCRM’s Research Advocacy Coordinator, said that the lawsuit really intends to open up “basic facts about what Neuralink testing did to the animals.” Beckham said monkeys had their brains mutilated in the experiments. Veterinary records, which were shared with Teslarati by the PCRM, show that UC Davis and Neuralink staff performed invasive and deadly experiments on monkeys to assess the effectiveness of the Neuralink device. The letter sent from the PCRM to the USDA earlier today gives several graphic descriptions of how the test animals were treated.
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One animal, known as “Animal 6,” was a 6-year-old macaque monkey who was killed on January 16, 2019. The letter states that, on October 10, 2018, implanted electrodes “were placed using an investigational robot,” then, “attached to skull using titanium implant screws.” The location of the screws began to become infected, according to the letter. By January 14th, “Animal 6” had started to pick at the infected area. Staff euthanized the monkey two days later.
Timeline of Events
PCRM has been working to clarify the situation since September 2020, but a more descriptive timeline of events would clarify how Neuralink, UC Davis, and the PCRM have all combined into this issue.
- May 2017 – The University of California at Davis and Neuralink sign and agree to Non-Disclosure Agreements regarding testing.
- September 2017 – UC Davis and Neuralink officially begin their collaboration to carry out primate experiments at UC Davis facilities. The goal is to develop a brain-machine interface.
- July 2018 – “Animal 4,” an 11-year-old macaque monkey is killed in the Neuralink/UC Davis experiments, according to the complaint. The monkey was “on anti-depressants and had chronic diarrhea and poor appetite.” Additionally, the monkey was observed as “lethargic” and “depressed,” and hunched and passed bloody diarrhea. The monkey eventually died in a deadly procedure on July 20th.
- Also in July 2018 – “Animal 12,” approximately 7-years-old, undergoes a craniotomy and electrode insertion procedure. Records show the animal had “severe clinical adverse effects following the implantation, had poor stool quality, was not eating, and had an eye infection.” Records abruptly ended on July 30th.
- September 2018 – “Animal 21,” a 7-year-old female macaque undergoes an “electrode insertion survivability” procedure using “investigational robotics.” The animal was observed with adverse side effects the following day, including vomiting, gasping, retching, and had little interaction with their environment and observers. The animal was euthanized and had signs of “Bioglue,” an unapproved adhesive, covering the brain.
- December 2018 – “Animal 15,” a 7-year-old female macaque undergoes a craniotomy and recording device implantation. Following the surgery, the area became infected and bloody. The animal was euthanized on March 21, 2019. The performed necropsy shows “remnant electrode threads.”
- January 2019 – “Animal 6,” a 6-year-old macaque monkey is killed as a part of the “experimental design.” Electrodes were secured by screws drilled into the monkey’s skull, and lab staff were forced to “frequently clean” the eroding skin near the monkey’s implant site.
- March 2019 – “Animal 11” is killed at approximately 11-years-old during a terminal procedure. The monkey had an implant placed on the head or brain on December 3rd, 2018, and began experiencing symptoms like a weakened appetite and missing fingers and toes, possibly caused by self-mutilation.
- January 2020 – “Animal 5,” another macaque monkey is killed “inadvertently” by an anticonvulsant. He showed signs of significant weight loss and alopecia.
- July 2020 – Neuralink’s Elon Musk announces that the company will hold an event on August 28th, 2020, to display the progress of the V0.9 device. “Will show neurons firing in real-time on August 28th. The matrix in the matrix,” Musk said in a Tweet.
- Also in July 2020 – Neuralink receives a ‘breakthrough device’ designation from the FDA in July, and the company is working with the agency to make the technology as safe as possible.
- August 2020 – Neuralink unveils the v0.9 device, displaying healthy and functioning pigs. Musk delivers a presentation on the new device, showing the simplified product Neuralink has developed. “It’s like a FitBit in your skull with tiny wires,” Musk half-joked. “I could have it right now and you wouldn’t even know. Maybe I do!” The device is said to be installed without general anesthesia. There will be no bleeding, and no noticeable damage after the device is implanted.
- September 2020 – The PCRM files a California Public Records request, wishing for information regarding UC Davis trials of the Neuralink device. The request is eventually denied in accordance with California State Code 6255(a), which says that the Agency “shall justify withholding any record by demonstrating that the record in question is exempt under express provisions of this chapter or that on the facts of the particular case the public interest served by not disclosing the record clearly outweighs the public interest served by disclosure of the record.”
- October 2020 – “Animal 10,” an 8-year-old macaque monkey, is shipped to Neuralink’s facility in Fremont. The monkey has significant hair loss, had lesions from “unspecified traumas,” and was exhibiting self-mutilating behavior.
- November 2020 – Neuralink severs ties with UC Davis on November 11. Neuralink then moves seven of the remaining monkeys to its facility in Fremont, California. Beckham said that records show 15 of the 23 monkeys used in the research died or were euthanized at UC Davis. The final monkey’s situation is unclear, but it is possible the animal was reassigned to a different project at UC Davis, Beckham said.
- April 2021 – Neuralink releases a YouTube video of “Pager the Monkey” allegedly playing video games with a wireless neural interface. The video features a nine-year-old Macaque named Pager playing “MindPong” while utilizing a Neuralink device.
- May 2021 – PCRM sues the University of California Davis under the California Public Records Act (CPRA) for not releasing records in September 2020. Before the suit reaches a judicial decision, Counsel for the University of California agrees to release 700 pages of information.
- October 2021 – University of California’s General Counsel turns over files including animal testing records and veterinarian reports to PCRM. More than 700 pages of records are turned over.
- February 2022 – PCRM files a separate complaint with the U.S. Department of Agriculture that alleges the information the organization has already received reveals evidence of violations of Federal Animal Welfare laws.
Moving Forward
Beckham maintains that the main point of the newest filing is to have UC Davis turn over photographs and videos that reveal the inhumane treatment of the animals due to the experiments. There are monkeys convulsing, vomiting, and dying in these labs,” Beckham said. “People want to step in line for the first human trials, and they should see this before they commit to that,” he told Teslarati. Neuralink was set for human trials this year, Musk said last year.
Beckham said that these complaints can take a while to work through the legal system. “In my years of being involved with humane testing litigation, I know that these things can take some time. Maybe up to a year,” he said. “It also depends how much they want to fight back.”
Neuralink did not immediately respond to our requests for comment.
Beckham’s full letter to the USDA is available below.
2022-02-10 PCRM USDA Complaint Re UC Davis and Neuralink (No Exhibits) by Joey Klender on Scribd
I’d love to hear from you! If you have any comments, concerns, or questions, please email me at joey@teslarati.com. You can also reach me on Twitter @KlenderJoey, or if you have news tips, you can email us at tips@teslarati.com.
Elon Musk
What is Digital Optimus? The new Tesla and xAI project explained
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Tesla and xAI announced their groundbreaking joint project, Digital Optimus, also nicknamed “Macrohard” in a humorous jab at Microsoft, earlier this week.
This software-based AI agent is designed to automate complex office workflows by observing and replicating human interactions with computers. As the first major outcome of Tesla’s $2 billion investment in xAI, it represents a powerful fusion of hardware efficiency and advanced reasoning.
At its core, Digital Optimus operates through a dual-process architecture inspired by human cognition.
Macrohard or Digital Optimus is a joint xAI-Tesla project, coming as part of Tesla’s investment agreement with xAI.
Grok is the master conductor/navigator with deep understanding of the world to direct digital Optimus, which is processing and actioning the past 5 secs of…
— Elon Musk (@elonmusk) March 11, 2026
Tesla’s specialized AI acts as “System 1”—the fast, instinctive executor—processing the past five seconds of real-time computer screen video along with keyboard and mouse actions to perform immediate tasks.
xAI’s Grok model serves as “System 2,” the strategic “master conductor” or navigator, providing high-level reasoning, world understanding, and directional oversight, much like an advanced turn-by-turn navigation system.
When combined, the two can create a powerful AI-based assistant that can complete everything from accounting work to HR tasks.
Will Tesla join the fold? Predicting a triple merger with SpaceX and xAI
The system runs primarily on Tesla’s low-cost AI4 inference chip, minimizing expensive Nvidia resources from xAI for competitive, real-time performance.
Elon Musk described it as “the only real-time smart AI system” capable, in principle, of emulating the functions of entire companies, handling everything from accounting and HR to repetitive digital operations.
Timelines point to swift deployment. Announced just days ago, Musk expects Digital Optimus to be ready for user experience within about six months, targeting rollout around September 2026.
It will integrate into all AI4-equipped Tesla vehicles, enabling parked cars to handle office work during downtime. Millions of dedicated units are also planned for deployment at Supercharger stations, tapping into roughly 7 gigawatts of available power.
Oh and it works in all AI4-equipped cars, so your car can do office work for you when not driving.
We’re also deploying millions of dedicated Digital Optimus units in the field at Superchargers where we have ~7 gigawatts of available power.
— Elon Musk (@elonmusk) March 12, 2026
Digital Optimus directly supports Tesla’s broader autonomy strategy. It leverages the same end-to-end neural networks, computer vision, and real-time decision-making tech that power Full Self-Driving (FSD) software and the physical Optimus humanoid robot.
By repurposing idle vehicle compute and extending AI4 hardware beyond driving, the project scales Tesla’s autonomy ecosystem from roads to digital workspaces.
As a virtual counterpart to physical Optimus, it divides labor: software agents manage screen-based tasks while humanoid robots tackle physical ones, accelerating Tesla’s vision of general-purpose AI for productivity, Robotaxi fleets, and beyond.
In essence, Digital Optimus bridges Tesla’s vehicle and robotics autonomy with enterprise-scale AI, promising massive efficiency gains. No other company currently matches its real-time capabilities on such accessible hardware.
It really could be one of the most crucial developments Tesla and xAI begin to integrate, as it could revolutionize how people work and travel.
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Tesla adds awesome new driving feature to Model Y
Tesla is rolling out a new “Comfort Braking” feature with Software Update 2026.8. The feature is exclusive to the new Model Y, and is currently unavailable for any other vehicle in the Tesla lineup.
Tesla is adding an awesome new driving feature to Model Y vehicles, effective on Juniper-updated models considered model year 2026 or newer.
Tesla is rolling out a new “Comfort Braking” feature with Software Update 2026.8. The feature is exclusive to the new Model Y, and is currently unavailable for any other vehicle in the Tesla lineup.
Tesla writes in the release notes for the feature:
“Your Tesla now provides a smoother feel as you come to a complete stop during routine braking.”
🚨 Tesla has added a new “Comfort Braking” update with 2026.8
“Your Tesla provides a smoother feel as you come to a complete stop during routine braking.” https://t.co/afqCpBSVeA pic.twitter.com/C6MRmzfzls
— TESLARATI (@Teslarati) March 13, 2026
Interestingly, we’re not too sure what catalyzed Tesla to try to improve braking smoothness, because it hasn’t seemed overly abrupt or rough from my perspective. Although the brake pedal in my Model Y is rarely used due to Regenerative Braking, it seems Tesla wanted to try to make the ride comfort even smoother for owners.
There is always room for improvement, though, and it seems that there is a way to make braking smoother for passengers while the vehicle is coming to a stop.
This is far from the first time Tesla has attempted to improve its ride comfort through Over-the-Air updates, as it has rolled out updates to improve regenerative braking performance, handling while using Full Self-Driving, improvements to Steer-by-Wire to Cybertruck, and even recent releases that have combatted Active Road Noise.
Tesla holds a unique ability to change the functionality of its vehicles through software updates, which have come in handy for many things, including remedying certain recalls and shipping new features to the Full Self-Driving suite.
Tesla seems to have the most seamless OTA processes, as many automakers have the ability to ship improvements through a simple software update.
We’re really excited to test the update, so when we get an opportunity to try out Comfort Braking when it makes it to our Model Y.
News
Tesla finally brings a Robotaxi update that Android users will love
The breakdown of the software version shows that Tesla is actively developing an Android-compatible version of the Robotaxi app, and the company is developing Live Activities for Android.
Tesla is finally bringing an update of its Robotaxi platform that Android users will love — mostly because it seems like they will finally be able to use the ride-hailing platform that the company has had active since last June.
Based on a decompile of software version 26.2.0 of the Robotaxi app, Tesla looks to be ready to roll out access to Android users.
According to the breakdown, performed by Tesla App Updates, the company is preparing to roll out an Android version of the app as it is developing several features for that operating system.
🚨 It looks like Tesla is preparing to launch the Robotaxi app for Android users at last!
A decompile of v26.2.0 of the Robotaxi app shows some progress on the Android side for Robotaxi 🤖 🚗 https://t.co/mThmoYuVLy
— TESLARATI (@Teslarati) March 13, 2026
The breakdown of the software version shows that Tesla is actively developing an Android-compatible version of the Robotaxi app, and the company is developing Live Activities for Android:
“Strings like notification_channel_robotaxid_trip_name and android_native_alicorn_eta_text show exactly how Tesla plans to replicate the iOS Live Activities experience. Instead of standard push alerts, Android users are getting a persistent, dynamically updating notification channel.”
This is a big step forward for several reasons. From a face-value perspective, Tesla is finally ready to offer Robotaxi to Android users.
The company has routinely prioritized Apple releases because there is a higher concentration of iPhone users in its ownership base. Additionally, the development process for Apple is simply less laborious.
Tesla is working to increase Android capabilities in its vehicles
Secondly, the Robotaxi rollout has been a typical example of “slowly then all at once.”
Tesla initially released Robotaxi access to a handful of media members and influencers. Eventually, it was expanded to more users, so that anyone using an iOS device could download the app and hail a semi-autonomous ride in Austin or the Bay Area.
Opening up the user base to Android users may show that Tesla is preparing to allow even more users to utilize its Robotaxi platform, and although it seems to be a few months away from only offering fully autonomous rides to anyone with app access, the expansion of the user base to an entirely different user base definitely seems like its a step in the right direction.