At this year’s Tesla shareholder meeting, Elon Musk announced a slate of changes for Tesla’s FSD hardware. For the first time, Musk talked openly about details of Tesla’s upcoming FSD Hardware 5, or “AI 5” and the differences between hardware 3 and hardware 4.
Hardware 4.0 Divergence
Currently, hardware 4.0 runs Hardware 3 in emulation mode, but with the completion of Tesla’s new AI-focused Supercomputer cluster, hardware 4 will eventually diverge from Hardware 3. Emulation mode simulates hardware 3, which means that today, hardware 4 is very similar to hardware 3. Elon Musk confirmed that the new cluster will be entirely focused on hardware 4 training, rather than hardware 3.
Hardware 4’s cameras are approximately 4-5x better in terms of resolution and fidelity than hardware 3, and hardware 4.0 is about 3-5x faster and powerful in inference capabilities. These are some pretty significant numbers, and Musk said he expects hardware 4.0 to eventually be about 5x better than hardware 3.0.
Hardware 3
While hardware 3 is no longer being produced, Tesla has said in the past that it will be capable of self-driving at a level that is safer than humans. Elon Musk confirmed on stage that hardware 3 would continue to receive training and would still have new FSD versions developed for it, however, hardware 4 would eventually be “about 5 times” better than hardware 3.
At some point hardware 3 will hit the end of its service life, but that’s not expected for at least several years.
Sadly, Tesla has previously confirmed that they do not intend to have a hardware 3 to hardware 4 retrofit, as the size of the MCU and electrical harnesses differ between vehicle hardware iterations.
Hardware 5.0 - “AI 5”
Elon Musk also officially announced Tesla’s FSD hardware 5.0, which he says Tesla is now calling “AI 5”. AI 5 is expected to hit the production lines for customer vehicles in approximately 18 months - around December 2025, with a massive slate of improvements. It is expected to be approximately 10x better than hardware 4.0, and up to 50x better in terms of inference power alone.
Of course, these massive improvements don’t come without a cost – AI 5 will consume up to 800 watts of power. In comparison, hardware 3 and hardware 4 use about 200 watts today, so don’t expect any upgrades from hardware 4. Like most modern processors, AI 5 can adjust its power efficiency. It’ll be able to ramp up or down its processing power depending on the complexity of the scene and the power needed.
We can expect that AI 5 will likely run in emulation mode when it arrives, and improvements between hardware 4 and AI 5 will take some time, similar to how hardware 4 is still in emulation mode today.
Musk Talking About AI 5
Musk talks about Tesla’s FSD hardware below during Tesla’s 2024 shareholder’s meeting, where he officially talked about Tesla’s upcoming hardware 5.0 for the first time.
