Terafab may be the most essential vertical integration Tesla has ever undertaken— and it is truly non-optional. It will take years to build and will test even Elon’s speedrunning abilities to the limit, but that won’t stop him from trying. The breakthrough likely lies in overhauling the overall facility’s cleanroom model. By moving wafers in sealed pods with localized micro-environments, the fab no longer needs a monolithic ultra-clean space. Elon’s line about “eating cheeseburgers and smoking cigars” on the fab floor isn’t silly, it’s the practical reality of a radically simpler, cheaper, faster approach that could finally change the economics of chipmaking. This is all forced by the brutal “pinch” in chip supply. Tesla must produce on the order of 100–200 billion AI chips per year just to saturate its roadmap. That volume powers: FSD cars & Robotaxis (tens of millions of vehicles needing AI5 inference for near-perfect autonomy), Physical Optimus (scaling from thousands today to millions per year, each requiring AI5/AI6-level compute), Digital Optimus (the new xAI-Tesla software agents for digital/office automation, running massive inference clusters), Space-based data centers (AI7/Dojo3 orbital compute for GW-scale training and inference beyond Earth limits). AI5 delivers the ~10× leap for vehicles and early robots; AI6 shifts focus to Optimus + terrestrial DCs; AI7 goes orbital. No external foundry (TSMC, Samsung, etc.) can deliver that scale or timeline— hence the Terafab launch. Without it, the entire robotics + autonomy future hits a brick wall. Terafab isn’t optional; it’s the only way forward.

Unit error 100-200 million

@pbeisel @CernBasher Grok is giving him a 70-80% chance of success 💥

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@pbeisel Think we will be able to eat hamburghers inside??

@pbeisel @CernBasher I guess you meant 100–200 million/year and not 100–200 billion, right ?

@pbeisel Any advantage to building a fab in space? No particles, no gravity.

@pbeisel Terafab can only work if Tesla enters a JV with ASML to build hundreds of EUV machines inside the Terafab. Otherwise global litho capacity falls short by an order of magnitude.

@pbeisel Agree But the bigger step is transitioning from electronics to low power photonics and bypassing the high cost EUV monopoly

@pbeisel I am impressed that Elon knows in advance that he will have a huge chip shortage.

@pbeisel Is this just a USA Samsung Fab rebadge for AI5/AI6?

Tera fab will be for AI8 and beyond. TSMC/Samsung will be fine for GEN 5,6&7 chips. the 3.5-4 years it will take to build Terafab and install equipment making ten million wafers a month. will be when SHTF for scaling in 2030. Build a successful 1 million wafer a month plant. Then copy and paste plants to build scale.

@pbeisel Is it le crown jewel?

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@pbeisel 4 days left. What will they start then? I trust @Tesla but a fab is on a new level of complexity.

@pbeisel If it was easy, in all likelihood Elon wouldn’t be interested. The almost-impossible is what attracts him; he’s addicted (in a good way), like those adrenaline junkies who jump off cliffs in flying squirrel suits. Never a dull moment.

@pbeisel See comments about EUVs bla bla… Where are they ganna get all that memory… Elon said the bottleneck is memory and energy

@pbeisel After 30 years of FOUP's, there may be room for innovation. How do you expect Tesla to improve upon the existing FOUP system that already use dry N2?

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@pbeisel @CernBasher Another Tesla innovation in the TeraFab will be wafers and chips that are a combination of CPU, GPU and memory all on one chip! A true AI chip. Just like our brain that has CPU, GPU and memory all in one place. Smaller, simpler, more energy efficient. Amazing breakthrough!

@pbeisel @CernBasher I am a long time FAB follower, need to break the ASML choke point to save money and innovate with graphine stratus layers to make the move Elon teams can perform. Then sell ASML, buy more ??? SpaceX?

@pbeisel Is containerizing the 'clean room' environment to the fab equipment only yield any significant cost/time benefits? I doubt that. Just adds complexity to a solved problem..but Elon tries to eke out tiny efficiencies and throws billions (maybe 10s of billions here) into the furnace

@pbeisel @CernBasher 20 bucks says he prints his first run 1 year from April 1st 2026.

Why do you say that sealed pods are a “breakthrough?” At most, it would result in a small improvement in yield as TSMC fabs already run at high yields. Please show the math behind that statement making a major change in the economics of a chip fab. The semiconductor industry has been improving the cleanliness of their fabs for decades and pods have been in use for at least a decade or two and while this is a progression on that same curve, I can’t see how it makes more than a small difference in the cost of production.

@pbeisel Digital Optimus could be Tesla’s local-first, cloud-light equivalent of OpenClaw, purpose-built for automotive edge computing devices. You can read what I wrote a couple of days before.

@pbeisel @CernBasher But fabs are hard- I would imagine substantially harder than the 4680 production which took much longer than anticipated. I just worry that it’s going to be a money furnace for some time

@pbeisel @CernBasher I am at the edge of my seat to learn how Elon plans to get around the bottlenecks, especially ASMLs EUV backlog. If Tesla can make industrial scale 2nm NIL work it's a breakthrough far beyond vertical integration.

@pbeisel @CernBasher @elonmusk @pbeisel @CernBasher how to deal with the ASML bottleneck?

@pbeisel Is there any reason to believe that Cybercabs produced at start of production won't be built using AI5 chips? I understand that volume isn't ready for full-rollout numbers, but is there such a thing as small batch production in chip/board manufacturing?

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@pbeisel Phil does this mean fabs without humans? I’ve been in the Semiconductor industry for a few decade now and it fascinates me what Elon is envisioning.

@pbeisel Terafab signals a practical rethink of fab economics at scale, focusing on localized environments over big cleanrooms

@pbeisel My concern is that this is the 4680 manufacturing challenges all over again.

@pbeisel What we are watching is beyond fascinating, the scale, speed, technological advances.... I will be honest I will be more excited when it starts hitting the income statement 😀.

Totally agree. Terafab feels like the final piece that completes Tesla’s “machine that builds the machine” vision. Revolutionizing the cleanroom model with sealed pods and localized micro-environments could be the real game changer for the entire semiconductor industry. The day we see Elon eating cheeseburgers on the fab floor while running EUV tools is the day the industry gets disrupted for real 😂 Producing 100-200 billion AI chips in-house to power tens of millions of robotaxis, hundreds of millions of Optimus, digital agents, and orbital data centers… insane scale. This is Elon turning the impossible into inevitable again. Terafab launch in 4 days — let’s go! 🚀