Tesla FSD V12.5 to Combine City and Highway Stacks, Introduce Vehicle-to-Fleet Communication and More

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As FSD V12.4.3 continues to get released to more vehicles, Elon Musk has posted that FSD V12.5 is already in testing and will include several key features.

The improvements in v12.5 are supposed to focus on rarer, more complex situations and vehicle-to-fleet communication. Tesla’s Autopilot lead, Ashok Elluswamy, also mentioned that FSD would gain the ability to go in reverse around this time.

Merge City & Highway Stacks

FSD v12 has been a multi-stack setup so far, with a city-streets stack that is end-to-end, and an older highway stack that was carried over from v11. FSD v12.5 will once again merge the city/highway stacks according to Musk, who confirmed the feature yesterday. That means that there will no longer be an implicit highway stack.

This could cause some regressions during highway driving, similar to the ones we experienced when Tesla first merged highway and city stacks back in FSD v11. Ultimately, when the issues were ironed out, we ended up with a smoother and better Autopilot experience on the highway. When FSD v12.5 rolls around, we may see some similar issues but expect FSD v12.5 to do to highways what v12 did for city driving.

Vehicle-to-Fleet Communications

Tesla’s FSD relies heavily upon maps, with the mapping information designating routing and lane changes. When vehicles encounter difficulties, they are unable to communicate that back to the rest of the fleet. This results in every vehicle encountering the same problem. With FSD V12.5, vehicles will be able to communicate road closures or other obstacles back to the rest of the fleet in real-time. This will turn FSD into software that’s constantly improving as the fleet gathers more data, instead of having to wait for a software update.

Cybertruck Finally Gets FSD

In a recent post on X, Musk also confirmed that V12.5 will finally bring FSD to the Cybertruck. Currently, all Cybertrucks only have access to Traffic Aware Cruise Control (TACC). Autopilot and FSD capabilities should arrive alongside all the other features.

Actually Smart Summon

Musk has talked quite a bit about Actually Smart Summon. With FSD 12.5, the new vision-based summon may finally be released. This will introduce Smart Summon capabilities to vision-only cars for the first time. However, it’s expected to be a drastic improvement for all vehicles in similar ways to the new Autopark. The new summon has been tied to the ability to move the vehicle in reverse by Tesla’s Autopilot lead, so expect either both of them to arrive in FSD 12.5, or be held off for a later release.

Release Date

Musk originally mentioned that FSD V12.5 would be released in late June, however, there were several delays with FSD 12.4 and that time frame has now come and gone. FSD 12.4 was initially released in May 2024, but it went through several lengthy revisions before it was introduced to public testers. Going by that time frame, it appears that FSD 12.5 was expected to be released about 4-6 weeks after FSD 12.4. If FSD 12.4.3 is finally got a good spot, we could see FSD 12.5 become available in the next 4-6 weeks or about late August.

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A Look at Tesla's New AI Training Center at Giga Texas [VIDEO]

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Elon Musk provided a sneak peek into “Cortex”, Tesla’s new AI training center that has been under construction for quite a while at Giga Texas.

Previously, we saw some shots of the new wing for the massive water-cooled supercomputer cluster at Giga Texas, which was being built at the southern end of the Gigafactory.

AI4 Training

Cortex appears to be the name of the supercomputer cluster, and we can assume that it will be referred to that way from now on. Cortex will primarily focus on exploring and expanding FSD’s performance envelope to include AI4, which will begin to diverge from HW3 sometime soon. Tesla hasn’t yet unlocked the full potential of AI4, as it still runs HW3 in emulation mode, but with a few extra tricks that HW3 doesn’t have access to. These are mostly hardware compiler changes, but they make a significant difference in the speed of processing the AI model.

Tesla intends to continue supporting HW3, but it's already apparent that the FSD model for HW3 is smaller than the model for AI4. However, Ashok Elluswamy, Tesla’s Autopilot program director, expects performance to be similar for the most part.

One other thing that Cortex will likely be tackling is not just FSD in cars – but FSD in Optimus. Optimus uses the same principal technology behind FSD for movement, as well as understanding and learning tasks, so we can expect to see plenty of improvements as Tesla is now getting Cortex online.

Video of the inside of Cortex today, the giant new AI training supercluster being built at Tesla HQ in Austin to solve real-world AI pic.twitter.com/DwJVUWUrb5

— Elon Musk (@elonmusk) August 26, 2024

Cortex, Not Dojo

What’s most interesting is that this new supercomputer cluster isn’t Tesla’s Dojo Supercomputers. Instead, this Cortex cluster is instead based on Nvidia’s H100 GPUs. Dojo was supposed to be Tesla’s in-house designed and specialized AI GPUs, meant to focus on optimizing FSD.

Dojo isn’t dead – but delayed from the sounds of it. We’re excited to see where Cortex takes Tesla in the future, and when Dojo shows up to join the party.

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Tesla Drastically Reduces CCS Adapter and Retrofit Pricing

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Tesla has lowered the price for both the CCS adapter, as well as CCS retrofits for its entire lineup throughout North America. This includes a reduction in price for the United States, Canada, and Mexico.

CCS Adapter

Tesla has dropped the price of the CCS (Combo 1 – North America) from $250 USD to $125 USD ($345 CAD to $175 CAD). That’s a straight 50% price reduction, making Tesla’s OEM CCS Adapter one of the cheapest on the market.

CCS1 was the non-Tesla standard for EVs, prior to Tesla opening the NACS standard. Tesla vehicles that have completed the retrofit, or are built after the retrofit date, can use a CCS adapter to charge at any regular CCS station.

CCS Retrofit

The CCS retrofit enables Tesla vehicles before around September 2022 (depending on model and region) to charge at CCS stations using a compatible CCS-to-NACS adapter. Vehicles built before that date won’t be able to charge at CCS stations without this retrofit. The retrofit also comes with a complementary CCS adapter.

You cannot unbundle the CCS adapter from the retrofit purchase to reduce the price.

The retrofit has different pricing for the Model S/X and the Model 3/Y.

How to Check If You Need a Retrofit

If you’re not sure whether your vehicle is CCS capable, you can go to Controls > Software > Additional Vehicle Information. It will show a line near the middle titled “CCS Charging and third-party NACS DC charging.” Next to it it will show whether your vehicle supports third-party CCS charging or whether you'll need a retrofit.

NACS to CCS

And that’s not all – Tesla has drastically increased the production of the NACS to CCS adapter for non-NACS vehicles that are Tesla Supercharger approved, hitting a new record of 8,000 units per week.

Tesla has made massive strides in bringing one standard and improving the efficiency and up-time of EV charging throughout North America, and we’re glad to see them continuing this trend as they move forward.

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