Tesla surges 8.2% on FSD hardware rollout and deeper SpaceX AI ties

Tesla shares surged 8.2% to $411.84 on Monday, erasing last week's losses, after Elon Musk announced a new Full Self Driving hardware rollout for AI3-equipped vehicles and highlighted deepening artificial intelligence ties with SpaceX.

"The AI3 computer only has about 15% of the effective memory bandwidth of AI4, so this was a tough challenge," Musk said in a post on X, referring to the engineering effort required to bring new FSD capabilities to older Tesla computers.

The upgrade targets Tesla vehicles built with AI3 hardware, introduced in 2019, which powers the company's driver-assistance system. Newer vehicles use AI4 hardware, launched in 2023, with roughly seven times the memory bandwidth. The software update could incentivize the roughly 4 million AI3-equipped Tesla owners to subscribe to FSD at $99 per month, potentially adding recurring revenue. Analysts project Tesla will report second-quarter deliveries of 409,000 vehicles on Thursday, according to FactSet, up from about 384,000 a year earlier.

The deepening ties between Tesla and SpaceX extend beyond software. The two Musk-led companies are jointly building a semiconductor manufacturing facility called TeraFab and collaborating on AI applications that could run on computing power from idle Teslas. SpaceX's Grok 4.5 AI model, which Musk said Sunday was "perhaps" better than Anthropic's offerings, is already being used by both companies. Wall Street has begun speculating about a potential Tesla-SpaceX merger within 12 to 18 months — a combination that would be the largest in history, following SpaceX's record-setting IPO in early June.

FSD Hardware Upgrade Opens Subscription Revenue Opportunity

The AI3 hardware upgrade extends the life of Tesla's older vehicle fleet. AI3 computers have roughly 15% of the memory bandwidth of AI4, making it technically challenging to run the latest FSD software. By optimizing for older hardware, Tesla can tap a base of millions of existing owners who might otherwise need to buy new vehicles to access improved driver-assistance features.

At $99 per month, even a modest take rate among AI3 owners would translate into meaningful subscription revenue. Tesla reported $2.3 billion in services and other revenue in the first quarter, a segment that includes FSD subscriptions, supercharging, and insurance.

TeraFab and the Tesla-SpaceX AI Pipeline

The TeraFab semiconductor facility represents a significant capital commitment from both companies. While Tesla and SpaceX have not disclosed the facility's total investment or production timeline, the project signals Musk's ambition to reduce reliance on external chip suppliers for AI workloads. Tesla already designs its own AI chips for its Full Self Driving computer, and SpaceX uses custom silicon for satellite communications and onboard computing.

The collaboration on AI applications — using idle Tesla vehicle computing power for distributed processing — echoes earlier concepts like Tesla's "distributed compute" network, which Musk has referenced in past earnings calls. If successful, the network could turn millions of parked Teslas into a decentralized AI computing resource, competing with traditional cloud providers.

Investment Implications

Tesla shares have fallen more than 15% year to date, weighed down by concerns about slowing EV demand and the distraction of the SpaceX IPO. The stock trades below both its 10-week and 40-week moving averages and remains 14% below its nearest standard buy point of $453.40, according to MarketSurge.

The FSD hardware upgrade and deepening SpaceX ties provide narrative support for Tesla's valuation, which has increasingly decoupled from its auto sales fundamentals. Barclays analyst Dan Levy wrote last week that Tesla stock is "being driven almost exclusively by narrative," with investors focused on robotaxi services, Optimus robots, and AI investments rather than quarterly delivery numbers.

This article is for informational purposes only and does not constitute investment advice.