Key Takeaways
- Elon Musk said cutting Optimus memory was Tesla's 'only way' to scale, according to Yahoo Finance and Chosun, but no official Tesla source has confirmed the statement.
- The same outlets cite Micron as saying humanoid robots need more than 200GB of memory each, a claim that has not been independently verified.
- Yahoo Finance and Teslahubs report Tesla set AI5 RAM at 96GB and AI6 at 144GB to scale output, figures that Tesla has not publicly confirmed.
- Coverage frames the decision as a trade-off between memory capacity per unit and production volume during a chip shortage, reflecting outlet analysis rather than an official explanation.
Background
Tesla's Optimus humanoid robot program aims to use the company's vertical integration in AI silicon to lower per-robot computing costs and power draw. The robot runs neural networks locally for balance, manipulation, and task planning, which makes onboard memory capacity a critical performance variable.
AI5 and AI6 are Tesla's next-generation AI training and inference platforms, successors to the hardware used in Full Self-Driving computers. Custom high-bandwidth memory is a key component of these accelerators, and production yields of advanced memory have historically influenced chip availability across the AI industry.
Timeline
| Date | What happened |
|---|---|
| Sep 16, 2026 | Samsung began prototype/trial production of Tesla's AI5 chips at its Taylor, Texas fab, according to Korean me |
| Sep 16, 2026 | The AI5 chip work at Samsung remains at the prototype stage, not full mass production. |
| Oct 4, 2026 | Elon Musk cut memory on Tesla's AI5 chip amid a memory shortage, then raised it to 96GB as a compromise, accor |
| Oct 4, 2026 | Musk reportedly aimed to avoid sitting at the bottom of chip specifications by setting AI5 memory at 96GB. |
| Oct 4, 2026 | Elon Musk said cutting Optimus memory was Tesla's only way to scale, according to coverage citing Micron's 200 |
| Oct 4, 2026 | Tesla set AI5 RAM at 96GB and AI6 at 144GB as part of a reported AI chip memory cut amid a shortage, to scale |
| Oct 4, 2026 | The memory cut was framed as a trade-off between memory capacity per unit and Tesla's ability to produce in vo |
The Latest Development
Third-party press coverageTesla's chip ramp may be constrained by memory capacity, according to third-party reporting from Yahoo Finance and South Korea's Chosun. The outlets report that Elon Musk said cutting Optimus memory was Tesla's 'only way' to scale, citing a shortage affecting AI chip memory.
Yahoo Finance and Teslahubs report Tesla set AI5 RAM at 96GB and AI6 at 144GB to scale output. The figures are framed as a trade-off between per-unit memory and volume production, with Micron cited by Yahoo Finance and Chosun as saying humanoid robots need 200GB or more of memory each.
Neither Tesla nor Musk has issued an official confirmation of the memory specifications or the 'only way' quote, so these details remain reported figures rather than company announcements.
What It Means
Confirmed
What is corroborated: Yahoo Finance and Chosun both carry the Musk quote and the Micron 200GB-plus claim, and Yahoo Finance and Teslahubs both carry the AI5 96GB and AI6 144GB figures. However, all three reports are secondary outlets; no official Tesla document, shareholder update, or regulatory filing has been cited to verify the numbers. The only established fact is that these outlets published the claims on October 4, 2026, based on the date in Chosun's URL.
Speculation
What is not confirmed: the exact memory figures, whether Musk actually used the 'only way' phrase, whether Micron's 200GB-plus figure reflects an official Micron statement or an analyst estimate, and whether a component shortage is the real driver. The inference that cutting memory will meaningfully increase AI5/AI6 output is outlet framing, not a sourced causal explanation. Until Tesla publishes specifications, these details should be treated as unverified reporting.
FAQ
QDid Tesla officially confirm the AI5 and AI6 RAM figures?
No. Tesla has not published AI5 RAM at 96GB or AI6 RAM at 144GB in an official document. Yahoo Finance and Teslahubs reported these figures, but they remain unconfirmed by Tesla.
QWhat did Elon Musk reportedly say about Optimus memory?
Yahoo Finance and Chosun report Musk said cutting Optimus memory was Tesla's 'only way' to scale, but no official Tesla statement or Musk post has confirmed the quote.
QHow much memory does a humanoid robot need, according to Micron?
According to coverage by Yahoo Finance and Chosun, Micron said humanoid robots need more than 200GB of memory each. This claim has not been independently verified.
QWhy would Tesla reduce memory on Optimus and AI chips?
The reporting frames it as a trade-off: lower per-unit memory allows higher production volume during a memory shortage. This is outlet analysis, not an official Tesla explanation.
QIs there a confirmed chip shortage affecting Tesla?
No. The shortage is mentioned in secondary coverage, but no primary source such as Tesla or a supplier has confirmed a specific memory shortage for AI5 or AI6.
QWhen did these reports appear?
Chosun's article URL includes the date October 4, 2026. Yahoo Finance and Teslahubs do not show explicit dates in the provided URLs, so their publication dates are not confirmed.
Information compiled from official statements and independent reporting, published October 5, 2026. Confirmed facts and unconfirmed/speculative points are separated above.
