Ashok Elluswamy, Tesla’s Autopilot director, commented on our article and gave additional insight into how Tesla was able to add support for HW3 and what they’re working on next. He confirmed that Tesla’s FSD team was able to achieve similar performance between AI4 and HW3 with FSD V12.5
Similar Performance, Smaller Model
One of the key points Ashok mentioned was that HW3’s FSD 12.5 release has similar, but not exactly the same performance as the AI4 release. This appears to be due to the smaller AI model for HW3, which has been compute-constrained by memory and speed limitations.
Of course, Ashok also tells us to mind the fact that the parameter counts and size of the AI model aren’t exactly everything. Hardware 3 still has the advantage of being the primary focus of Tesla’s FSD teams until the new Supercomputer Cluster at Giga Texas comes online. That, plus the tremendous reams of data that Tesla has acquired from Hardware 3 vehicles on the road today means that the current Hardware 3 version of FSD V12.5 is probably in a pretty good spot.
Larger Model Coming to HW3
It looks like the Tesla FSD team is working on emulating AI4 in Hardware 3 now, as there are some unique hardware-based operations supported on AI4, that aren’t supported on Hardware 3. Ashok says that in order for Tesla to support the larger model on HW3 they’ll need to implement these AI4’s hardware features with software on HW3. He confirms that Tesla is actively implementing and verifying these operations and they plan to support the larger FSD model on HW3 in the future.
Right now it sounds like Tesla is compressing the model, but still able to get close to the same FSD performance of AI4.
We’re looking forward to seeing FSD 12.5 hitting HW3 vehicles in the upcoming weeks if all goes well with initial employee testing.
We were able to achieve similar performance as the AI4 12.5 release with a relatively smaller model for AI3. Deploying the larger model requires us to implement a few kernels in the compiler to emulate the same operations that are natively supported on the AI4 hardware. The team…
One of the keys here is Ashok has focused on mentioning that the same FSD V12.5 model can run on both hardware platforms in the future. He noted that the performance was similar, but not the same. We’re not quite sure how big the difference is going to be just yet, but it looks to be negligible – especially from the positivity behind his post.
Ashok also doesn’t mention FSD V12.6 or future major iterations of FSD, but we aren’t worried. It sounds like Tesla is still committed to supporting HW3 in future iterations of FSD working, so it looks like it’ll be in a good spot for the foreseeable future.
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The Rivian R1S and the Tesla Model X are two of the premiere choices when buying a large electric SUV. So, we put together a buyer’s guide to help customers search for their EV of choice.
Both the R1S and the Model X are fantastic vehicles, and we’re not here to put one up or the other down. Instead, we’ll be looking at the advantages each vehicle brings – everyone has different needs for their vehicle, and some may favor one over the other.
Price, Range, and Specs
The R1S and the Model X are both unique vehicles in their own right, but each has their own set of configurations that could work better for your family. The table below compares some of the basic specs of these vehicles.
Vehicle
Price (USD)
Range
0-60 mph
Seats
Model X LR
$79,990
335mi
3.8s
5, 6, or 7*
Model X Plaid
$94,990
326mi
2.5s
6
R1S Standard
$75,900
270mi
4.5s
7
R1S Large
$82,900
330mi
3.4s
7
R1S Max
$89,900
410mi
3.4s
7
R1S Tri Max
$105,900
371mi
2.9s
7
R1S Quad Max**
TBC
350mi est.
2.6s
7
* The Model X LR can be equipped with 5, 6, or 7 seat interiors. ** The R1S Quad Max pricing and range are unavailable today, and deliveries will begin in 2025.
All the prices listed above are without considering any Federal, State, or Provincial EV Rebates you may qualify for.
Seating
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The Model X offers more flexibility in terms of seating, with buyers being able to pick from a 5-seat configuration with a bench seat in the second row and more cargo room or go up to a 6-seat layout with captain chairs and a center row. The 7-seat configuration keeps the bench seat in the second row and the two rear seats in the third row.
The R1S only has a single-seat configuration with a bench seat in the second row and two seats in the third row.
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Interior
When looking at the interiors of each vehicle, both are well-equipped and luxurious right off the bat. Both vehicles come in vegan leather alternatives, and the seats are well-designed and comfortable.
Rivian
Rivian and Tesla both have unique interior finishes – the R1S comes with the improved Ascend finish on the Tri-Max and the Quad Max, while the Model X Plaid comes with carbon fiber trim throughout the interior rather than the standard wooden finishes.
Both also have a set of unique internal finishes to choose from, all with high-quality materials. Tesla, for its part, focuses on black, white, and beige, while Rivian offers a wider range of colors. We suggest looking at both interiors online, and in person if you have the opportunity to.
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Road Tripping & Families
Both vehicles have some fantastic advantages for both road-tripping, as well as every day errands with the family.
In terms of interior access, the Model X, with its 6-seat layout, offers better access to and from the third row. The falcon wing doors also make it easier for passengers to get in and out of any of the rear seats. Since they’re automated doors and require very little space to open, it’s also easier for kids to get in and out of the vehicle. If your child is in a car seat, the falcon wing doors also provide a significant advantage when putting your child into the car seat since the doors open up over your head instead of swinging outward.
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On the flip side, the R1S is a larger vehicle all around, and the 7-seat configuration leaves you with plenty of space for a large family. However, third-row access will be more difficult since it requires you to flip down one of the second-row seats. The middle row leaves plenty of space for even taller people to get into. In fact, with three people in the back, you’ll find a considerably larger amount of shoulder room and foot room than in the Model X. If you’ve got a big family or find yourself driving around lots of people, the R1S offers a definite advantage in this area.
Rear Screen
Tesla / Rivian
The Model X comes with a fully capable rear display measuring almost 9 inches, which passengers can use for a wide variety of things, including playing games, watching videos on Netflix, YouTube, or other services, in addition to controlling parts of the vehicle such as seat heaters and the rear climate.
The R1S 6.8-inch rear display is aimed more at being a utility instead of offering entertainment benefits. It’ll let passengers control music, adjust the climate, and see your trip’s progress, but currently doesn’t offer the ability to watch any video content.
Both screens are placed directly behind the center armrest of the front seats, which gives an adequate view for passengers in the second row, but not the third.
Tesla has the advantages hands-down on this one, with the rear screen not only supporting video streaming while the vehicle is moving but also supporting a second channel of Bluetooth audio so that passengers in the back can listen to different content than the front passengers.
Rivian may add video capability to their rear screen in the future. However, it’s not clear whether they’ll support separate audio for the rear display. The Rivian display is also much smaller and has a non-standard ratio, meaning that video content won’t fill the whole screen.
Tesla also provides passengers in the front the ability to control the rear screen. If you have young kids, you can actually bring up the rear screen on the main display in the front and load up a video for your kids.
Storage Space
While both vehicles are considered “SUVs”, the R1S is the clear taker in terms of available storage space, both up front in the frunk, and cargo space in the back. However, the Model X does offer a fairly large amount of storage, and that may be good enough for most people.
Let’s take a look at the overall storage space capabilities of each vehicle.
Model X
R1S
Frunk
6.5 cu ft
11.1 cu ft
Trunk*
33.8 cu ft
46.7 cu ft
Roof Rack
Not Capable
Capable
Towing**
Up to 5000lb
Up to 7700lb
Vehicle Height
66”
77”
Vehicle Width
79”
82”
Vehicle Length
198”
201”
* This is cubic feet of space, with the third row folded flat in either vehicle.
** Towing specifications depend on tire size and motor options for each vehicle, and a proper weight-distributing hitch may be required. Consult the service manuals for exact details.
Charging
Both the R1S and the Model X are top-of-the-line electric vehicles, and both offer fantastic charging speeds and range.
The R1S offers a maximum charging speed of 220kW, while the Model X offers a maximum charging speed of 250kW. Overall, both vehicles, when pre-conditioned and at a low state of charge, will charge fairly quickly, making them both great choices for road-tripping. Of course, you can also use slower AC charging for either vehicle.
The largest difference in terms of charging is that the Model X is supported at every Tesla Supercharger - the largest and most reliable charging network in North America. The R1S can also be charged at some Tesla Superchargers, but it’ll need to be a V4 Supercharger that has a built-in adapter referred to as the “Magic Dock,” or you’ll need to have a NACS to CSS adapter.
Both vehicles are capable of charging at third-party CCS stations like Electrify America, but the Model X will require a CCS to NACS adapter. The R1S also supports charging at Rivian’s excellent Rivian Adventure Network (RAN) chargers, which are currently limited to Rivian vehicles. These chargers are typically located in adventuring hotspots throughout the continental United States.
Autonomy
On the autonomy front, Tesla is a clear winner – especially if you want a vehicle that can mostly drive itself today with minimal interventions. FSD is an exceptional software package that sees continuous OTA improvements, and for many subscribers and owners of the software – it’s a service that they couldn’t live without.
FSD Supervised today is a fantastic system able to route itself through city streets and highways, and get you from point A to point B, provided you’re paying attention and can intervene if the system can’t handle a situation.
And if you don’t want to use FSD, the Model X comes equipped with Basic Autopilot, which can provide adaptive cruise control and lane assist, as well as all the safety features that come standard on every Tesla.
Rivian, on the other hand, doesn’t offer a full autonomy package, but on their newer Generation 2 vehicles, it does offer some autonomy features that are similar to Tesla’s Basic Autopilot. Rivian is actively working on improving its autonomy software and promises to expand its functionality in the future. Rivian’s Driver+ on their Gen 1 vehicles (2024 and older) provides highway assist on select highways, as well as adaptive cruise control, lane assist, and lane change assist, alongside all of Rivian’s standard safety features.
Overall, Rivian’s package is less capable than Tesla’s today, but it still offers some driver-assist features on the highway.
Comfort & Luxury
When it comes to big SUVs, and especially luxury vehicle purchases in general, comfort is a big aspect in terms of the purchase. Both the R1S and the Model X bring adaptive air suspension, which means both vehicles ride more comfortably than most cars. The R1S does offer a few more adjustable comfort-focused options for its air suspension than the Model X, such as different drive modes, but the difference between the vehicles is remarkably close.
In terms of seat comfort, both the R1S and the Model X have spectacularly comfortable seats. The front seats on both vehicles are heated and cooled, while the second and third rows are limited to heated seats that can be controlled through the rear screen. Neither vehicle brings massage seats to the table, but if that’s a dealbreaker, we suggest waiting for Lucid’s upcoming Gravity SUV.
While the Model X has luxurious additions like auto-opening front doors as you approach, the amazing falcon-wing doors, and the ability to automatically open the frunk or trunk hands-free, the Rivian also has some of its own luxuries.
The Rivian R1S features a powered frunk which can be opened or closed from inside the vehicle or from the Rivian app. It also features some nice additions, such as the built-in flashlight, the optional built-in air compressor, or a dynamic glass roof that can be dimmed at the touch of a button. The R1S also includes customizable ambient lighting and support for surround sound using Dolby Atmos (requires a subscription to Connect+).
Rivian Wave
Software & Software Updates
Both brands offer very software-focused vehicles that receive software updates several times per year, roughly once per month. Both of these vehicles are constantly getting better and will receive new features that keep the vehicle feeling new and exciting. While the software user interface will be a personal preference, Tesla currently has more software features and entertainment options. However, both vehicles include features like Dog Mode / Pet Comfort, Sentry Mode / Gear Guard, Camp Mode, and Launch Mode for performance variants. Tesla and Rivian both like to toss in the occasional easter egg as well.
Summary
Both the Tesla Model X and the Rivian R1S are excellent vehicles in their own right, and each offers a unique and fresh take on the SUV experience. They’re both fantastic EVs, with some of the best battery and motor technology in the business, and you can’t go wrong selecting either one. In general, the Riviam R1S offers a more spacious interior with more cargo room with finer materials, while the Model X offers a more robust driver-assist system, a better charging network, more entertainment options, and a superior seat layout.
We highly recommend you head over to a Tesla Showroom and to a Rivian Space to get acquainted with both vehicles in person.
Tesla has introduced a new patent on a unique system for adjusting vehicle suspension based on the environment around it.
This new patent addresses the Model 3’s adaptive suspension and future active suspension for other vehicles. Tesla already adjusts air suspensions based on air density, road elevation, and saved data points, but this patent is expected to be relevant for vehicles with air suspension as well.
Active Adjustable Suspension
This new system includes several steps. It generates a road roughness map that will be shared across the fleet to generate a comprehensive network of road conditions, which is updated every time a fleet vehicle passes over the same road.
This network is built of GPS coordinates along with data gathered from vehicle sensors, including accelerometers and suspension height data. Overall, a height map of road roughness and acceleration data is combined to build a dynamic suspension roadmap.
Essentially, by putting together an Active Adaptive Suspension system, road roughness map, and vehicle sensors, Tesla is building a global map of road conditions to change how vehicles adapt to roads in real-time. This is an innovative technique and something that Tesla’s uniquely connected fleet is capable of.
These features could provide several benefits, such as improved ride comfort and increased vehicle safety, by adjusting the suspension for conditions as they arrive. This also has the opportunity to increase vehicle efficiency, as riding over bumps while higher will slightly increase rolling efficiency as the suspension absorbs the impact rather than losing forward momentum.
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Air Suspension Saved Points
The Tesla Model S, Model X, and Cybertruck all save data points based on bumps in the road for regular routes. This means that speed bumps, steep driveways, bumpy dirt roads, or car washes will automatically trigger the suspension raising. After passing these points, the suspension will be lowered automatically.
This new active adjustable suspension will likely be a feature on all of Tesla’s future vehicles, which means a smoother ride will be coming soon to future iterations of the Model Y as well. Take a look at our Model Y Juniper Wishlist for more features we’d love to see.
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