Optimus - What We Learned About Tesla's Robotic Future

By Karan Singh
Optimus Gen 2
Optimus Gen 2
Tesla

Optimus was a major point of coverage at the 2024 Tesla Shareholder meeting, and we’ll help break down some of the key points for those interested in Tesla’s future humanoid robots.

What Is It?

Optimus is Tesla’s humanoid robot, built entirely in-house, from the batteries to the motors and actuators in the arms, legs, and hands. Tesla has taken a unique design approach to Optimus and intends to have it replace humans in mundane or risky tasks.

It is a bipedal robot, built around the same aspect as the human body. Optimus was originally unveiled in August 2021 and has since seen several major design iterations. And those aren’t the only ones, Optimus is scheduled to undergo at least one more major design revision this year, as well as one more major design revision for its hands – which will feature 22 degrees of freedom.

In comparison, the human hand has 27 degrees of freedom – Tesla is quite close to replicating the complexity of a hand in its custom-designed hands. Musk mentioned that with the 22 degrees of freedom, Optimus is capable of learning and playing music on a piano – an intricate task that many humans find difficult today.

Best of all, they’ve placed the immense learning prowess of FSD behind its brains – each Optimus unit runs similar hardware and software as Tesla cars . It can also navigate autonomously, using the same object recognition and learning that Tesla’s cars use every day. Optimus learns from watching humans do things or can be taught how to do something by a remote operator. Elon Musk also mentioned that it will eventually be able to watch a video and learn how to do a task.

What Can It Do?

Elon Musk has mentioned that Optimus’ primary goal is to replace humans in certain tasks, especially those that could put a human at risk. This could be anything from being a humanoid companion or caretaker, a construction worker, or even working in factories. Of course, it has a focus on high-precision tasks, owing to its intricately designed hands, and is intended to replace human workers doing everyday precision work that robots today cannot do.

The primary goal is to have Optimus robots begin working in factories, and to this end, two have been deployed to one of Tesla’s factories, and are working on the battery cell assembly lines in a prototype and testing deployment. Today, these two units are moving battery cells off the production line and into shipping containers.

2:1 Robot to Human Ratio

There are some ambitious plans for Optimus – Elon Musk envisions that there will be 2 humanoid robots for every human on the planet in the future. This is alongside an eye-watering build rate of 1 billion humanoid robots a year – of which Tesla intends to build at least 100 million per year or more.

With these numbers, Tesla sees the market cap for Optimus as double that of FSD – approximately $20 trillion, with an expected profit of $1 trillion per year at scale. That’s an expected profit of $10,000 per unit, which will be quite the achievement.

When’s It Coming?

Given the fact that Tesla still has design revisions planned, scale production isn’t starting anytime soon. However, Elon Musk did mention that Tesla currently plans to have approximately 1000 to 2000 Optimus units deployed for internal use in Tesla factories by the end of next year. This limited production run will be the start of Tesla’s larger Optimus deployments and will serve to help them refine the FSD stack that runs Optimus, helping teach it the many tasks it could do in a factory.

Costs

The next big question is what it will cost. Musk has mentioned that it will cost less than a car – with an expected cost of $20,000 USD, once large-scale production kicks off. Just like the Cybertruck, that means initial adopters will be faced with fairly high adoption costs for the initial production runs. Economies of scale will eventually lower the cost as more units are produced.

One of Tesla’s significant challenges will be scaling to reduce these costs. Currently, each unit is hand-built in Tesla’s Optimus labs. Eventually, this will have to scaled up to a proper production line, which will require a factory. Optimus also uses 4680 cells, which means some production of the newer 4680 batteries will be required to produce Optimus.

So perhaps, someday soon, there will be an Optimus knocking on your door, delivering itself to help you take care of your home. Definitely a bright future to look forward to.

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Tesla LFP Batteries Can Now Be Warmed up While Supercharging Using Innovative Feature

By Karan Singh
Not a Tesla App

Tesla’s been on a roll with Supercharger improvements lately, from the 325kW charging update for the Cybertruck, to 500kW with V4 Superchargers coming next year. While those improvements have been limited to the Cybertruck, Tesla didn’t put all their focus on their new flagship vehicle, but looked at their more affordable vehicles as well.

LFP Battery Heating

Tesla’s Superchargers can now heat LFP Batteries - those that are in the Model 3 and Model Y Rear Wheel Drive variants. This applies to Long Range and Standard Range models, which saw a limited run. This is another update included as part of the 2024 Tesla Holiday Update - which really arrived with a lot of unannounced new features and capabilities.

The change is pretty interesting - Superchargers of the V3 and V4 variety can now pre-heat batteries for Model 3 and Model Y vehicles equipped with LFP battery packs. That means those vehicles are able to get back on the road faster when it's extremely cold. Of course, Tesla still advises you to precondition before you arrive, saving drivers time and money.

Max de Zegher, Tesla’s Director of Charging, also commented on the new feature. Essentially, Tesla is inducing an AC (alternating) ripple current through the battery to warm it up. Keep in mind that Superchargers are DC charging. That means it is possible to get a cold-soaked LFP vehicle on the road 4x faster than before, assuming that it didn’t precondition at all and that it is in the worst-case scenario (below 0ºF).

In essence, Tesla is using some engineering magic to turn the circuits inside the LFP battery into an electric heater - and powering that heater through the Supercharger. An AC ripple current is a small oscillation in the DC charging current that generates heat through electrical resistance, warming up the battery. Those ripples are a byproduct of converting AC to DC and back - so Tesla is using the onboard charger to induce those ripples to warm up the battery. Definitely an innovative technique that’s really only possible with the versatility of the NACS connector.

We’re hoping Tesla can implement this across their full lineup of vehicles, but we’ll have to wait and see how it is trialed across LFP vehicles first and if it is even possible on vehicles with 2170 or 4680 battery packs.

Tesla Included FSD V12.6.1 and V13.2.4 in the Same Update: What Caused This and What It Means

By Karan Singh
Not a Tesla App

Tesla launched two FSD updates simultaneously on Saturday night, and what’s most interesting is that they arrived on the same software version. We’ll dig into that a little later, but for now, there’s good news for everyone. For Hardware 3 owners, FSD V12.6.1 is launching to all vehicles, including the Model 3 and Model Y. For AI4 owners, FSD V13.2.4 is launching, starting with the Cybertruck.

FSD V13.2.4

A new V13 build is now rolling out to the Cybertruck and is expected to arrive for the rest of the AI4 fleet soon. However, this build seems to be focused on bug fixes. There are no changes to the release notes for the Cybertruck with this release, and it’s unlikely to feature any changes when it arrives on other vehicles.

While this update focuses on bug fixes, Tesla’s already working on bigger features for FSD V13.3, which we have already confirmed to include improvements to highway following and speed control.

FSD V12.6.1

FSD V12.6.1 builds upon V12.6, which is the latest FSD version for HW3 vehicles. While FSD V12.6 was only released for the redesigned Model S and Model X with HW3, FSD V12.6.1 is adding support for the Model 3 and Model Y.

While this is only a bug-fix release for users coming from FSD V12.6, it includes massive improvements for anyone coming from an older FSD version. Two of the biggest changes are the new end-to-end highway stack that now utilizes FSD V12 for highway driving and a redesigned controller that allows FSD to drive “V13” smooth.

It also adds speed profiles, earlier lane changes, and more. You can read our in-depth look at all the changes in FSD V12.6.

Same Update, Multiple FSD Builds

What’s interesting about this software version is that it “includes" two FSD updates, V12.6.1 for HW3 and V13.2.4 for HW4 vehicles. While this is interesting, it’s less special when you understand what’s happening under the hood.

The vehicle’s firmware and Autopilot firmware are actually completely separate. While a vehicle downloading a firmware update may look like a singular process, it’s actually performing several functions during this period. First, it downloads the vehicle’s firmware. Upon unpacking the update, it’s instructed which Autopilot/FSD firmware should be downloaded.

While the FSD firmware is separate, the vehicle can’t download any FSD update. The FSD version is hard-coded in the vehicle’s firmware that was just downloaded. This helps Tesla keep the infotainment and Autopilot firmware tightly coupled, leading to fewer issues.

What we’re seeing here is that HW3 vehicles are being told to download one FSD version, while HW4 vehicles are being told to download a different version.

While this is the first time Tesla has had two FSD versions tied to the same vehicle software version, the process hasn’t actually changed, and what we’re seeing won’t lead to faster FSD updates or the ability to download FSD separately. What we’re seeing is the direct result of the divergence of HW3 and HW4.

While HW3/4 remained basically on the same FSD version until recently, it is now necessary to deploy different versions for the two platforms. We expect this to be the norm going forward, where HW3 will be on a much different version of FSD than HW4. While each update may not include two different FSD versions going forward, we may see it occasionally, depending on which features Autopilot is dependent on.

Thanks to Greentheonly for helping us understand what happened with this release and for the insight into Tesla’s processes.

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