Tesla Cybercab Includes More Powerful FSD Hardware
Not a Tesla App
Tesla's Cybercab robotaxi is running a beefed-up self-driving computer with more RAM than what's in Model 3s and Model Ys today. More memory means bigger AI models can run onboard, which matters since Tesla's been hitting bottlenecks trying to squeeze bigger neural nets into current hardware.
Based on reporting by Not a Tesla App — read the original for the full story.
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Tesla apparently isn't taking any chances with the brains behind its robotaxi. According to a reliable source, production Cybercabs rolling out of Gigafactory Texas are packing a version of the Full Self-Driving computer that outmuscles the Hardware 4 chips currently shipping in Model 3s and Model Ys, at least when it comes to onboard memory.
The specifics are still fuzzy, and that's part of what makes this interesting. Nobody's entirely sure whether these early units are running a pre-production version of the AI4+ chip Tesla mentioned on its Q1 2026 earnings call, or whether engineers just wired two current AI4 boards together as a stopgap. There's even a small possibility it's an early AI5 chip, though that one isn't slated for mass production until 2027. What is known is that today's AI4 setup pairs two 16GB chips for a combined 32GB, and whatever's in the Cybancab clears that ceiling.
Why bother with the extra memory at all? Because Tesla's self-driving neural networks keep getting bigger, and the development team has been running into memory bottlenecks trying to cram those growing models onto consumer-grade hardware. The previously announced AI4+ chip is supposed to double total package memory to 64GB, so giving the Cybancab an early taste of that headroom now means Tesla's driverless fleet won't outgrow its own computer anytime soon.
The extra horsepower tracks with what Tesla is actually building. First responder documentation for the Cybancab spells out that it's equipped with an SAE Level 4 Autonomous Mode, meaning it's meant to operate with zero human intervention, no steering wheel, no pedals. Tesla has already started testing wheel-less, pedal-less Cybancabs on public roads in Austin, and in its newly released 2025 annual impact report the company framed the Cybancab as the intended backbone of its Robotaxi fleet, built to free up cabin space and cut both weight and operating costs.
My take — AI-written commentary, not fact-checked reporting
Loading extra silicon into the one vehicle that's supposed to drive itself with zero human backup is the obvious move, not a bold one — if any Tesla needs headroom for bigger models, it's the one without a steering wheel to bail it out. The bigger tell here is that Tesla keeps running into memory bottlenecks on existing hardware, which says plenty about how fast these self-driving models are ballooning compared to what the company shipped even a year or two ago.
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