Key Takeaways
- Multiple secondary outlets—Wccftech, Benzinga, and Yahoo Finance—reported that Elon Musk described memory cuts as the 'only way' to scale Optimus, but Tesla has not issued an official confirmation.
- Wccftech reported AI5 memory was initially cut to 72 GB and later adjusted to 96 GB, while AI6 was cut to 144 GB; the AI5 adjustment is not confirmed by other outlets.
- Benzinga carried Musk's assertion that Optimus performance would not be affected, but this is an unverified claim attributed to Musk, not an independently tested result.
- Micron's stated 200 GB humanoid robot memory requirement is a general industry benchmark and not specific to Tesla's reported 96 GB and 144 GB figures.
- The exact memory figures, the finality of the reported cuts, and the severity of the memory shortage remain unconfirmed.
Background
Tesla has designed its own AI processors for more than a decade, first for Autopilot and Full Self-Driving, and now for the Optimus humanoid robot. The AI5 and AI6 generations are the next steps in that in-house silicon roadmap. A humanoid robot has to process inputs from multiple cameras, microphones, joint torque sensors, and inertial measurement units at the same time. That sensor fusion must happen in real time, so the amount of memory available on the chip directly determines what the robot can compute without relying on a cloud connection. Low memory can force the system to swap models or compress sensor data, which risks adding latency during motions that require balance and precise manipulation.
Memory choices also affect cost, power draw, and how many chips can be manufactured. High-bandwidth memory is expensive and currently in short supply because AI datacenter accelerators consume a large share of production. If a chip needs less memory, it can be produced in greater volume and at lower cost, which matters for a robot Tesla wants to build at scale. Micron, one of the largest memory suppliers, has publicly said that humanoid robots need 200 GB or more of memory each. That is an industry benchmark, not a Tesla-specific requirement. Tesla has not released official memory specifications for AI5 or AI6, so the reported cuts cannot be checked against primary documents.
Timeline
| Date | What happened |
|---|---|
| Aug 28, 2026 | Tesla's Optimus robot entered production at Fremont. |
| Aug 31, 2026 | Tesla increased its 2026 capital budget to $25 billion, with a large portion dedicated to scaling Optimus prod |
| Aug 31, 2026 | Tesla tore down its Model S/X line in 46 days to accommodate Optimus production. |
| Aug 31, 2026 | Tesla is pushing Optimus toward factory production. |
| Sep 6, 2026 | Tesla tore down its Model S and Model X assembly line in 46 days to make room for Optimus production. |
| Sep 6, 2026 | The retooling shifts factory capacity from passenger vehicles to humanoid robots. |
| Sep 11, 2026 | Tesla is discontinuing the Model S and Model X in 2026, ending the two long-running EV nameplates. |
The Latest Development
Secondary media reportsSeveral technology and finance outlets reported this week that Elon Musk described cutting the memory requirements for Tesla's AI5 and AI6 chips as the 'only way' to scale Optimus robot production. Wccftech and Benzinga each carried accounts of the remarks, while Yahoo Finance SG also relayed the story. No official Tesla statement, filing, or manufacturing account has been cited to confirm the details. The reports do not include a transcript or video of Musk's remarks, so the exact wording and context of 'only way' remains a secondary account. The stories appear amid what the outlets describe as a tight memory market.
Wccftech reported that AI5 memory was halved to 72 GB and then later adjusted upward to 96 GB after initial coverage, while AI6 was cut by a third to 144 GB. Benzinga carried similar figures, and both outlets quote Musk saying Optimus performance would not be affected by the reductions. The upward revision from 72 GB to 96 GB appears only in follow-up coverage by Wccftech; it has not been independently confirmed by other outlets. The reports do not specify whether the figures refer to total memory capacity or to a particular memory type such as high-bandwidth memory. That distinction matters because different memory types have very different costs and latency.
Micron has stated that humanoid robots need 200 GB or more of memory per unit, a figure that sits above Tesla's reported 96 GB AI5 and 144 GB AI6 targets. That Micron statement is a general industry benchmark, not a Tesla-specific design requirement, and it was relayed by Benzinga. As of now, the exact memory figures and the claim that Optimus performance would be unaffected remain unverified beyond these secondary reports. No primary Tesla source has confirmed any number, and the company has not issued a response.
Owner / Hands-on Perspective
For Tesla owners, there is no immediate action tied to these reports. AI5 and AI6 are not part of any current owner's vehicle, and no software update or setting change would apply based on unconfirmed chip plans. A concrete step owners can take is to note their current Autopilot computer version under Controls > Software > Additional Vehicle Information; this provides a baseline for any future hardware retrofit discussions, but Tesla has not announced any such path for AI5 or AI6. The only practical relevance for an owner today is if you are tracking hardware compatibility for Full Self-Driving; Tesla's release notes remain the authoritative source for what software works with your installed computer. Until an official Tesla document confirms the memory changes, treat the reported figures as speculative.
What It Means
Confirmed
Multiple independent technology and finance outlets—Wccftech, Benzinga, and Yahoo Finance—have published accounts describing the same reported remarks and chip-memory figures. The existence of that reporting is corroborated across sources, but the underlying claims have not been confirmed by Tesla or any regulatory document. The only fact that is directly established is that these outlets reported the story; the memory figures and Musk quotes remain third-party claims.
Speculation
Unconfirmed details include the specific memory amounts—Wccftech's initial 72 GB figure and its later 96 GB revision have not been independently verified by other outlets, and the AI6 144 GB figure also rests on secondary reporting. The assertion that Optimus performance will be unaffected is attributed to Musk but has not been tested or confirmed by Tesla. Micron's 200 GB humanoid robot requirement is a broad industry statement and may not reflect Tesla's engineering constraints. Whether the reported cuts are final, reversible, or actually the 'only way' to scale production is also speculative.
FAQ
QDid Elon Musk confirm Tesla cut AI5/AI6 memory for Optimus?
No official Tesla confirmation exists. Multiple secondary outlets, including Wccftech and Benzinga, reported that Musk made remarks about cutting memory, but Tesla has not issued a statement or filing.
QWhat memory figures have been reported for Tesla's AI5 and AI6 chips?
Wccftech reported AI5 memory was halved to 72 GB and later revised to 96 GB, and AI6 cut to 144 GB. Benzinga carried similar figures. These are third-party reports and have not been independently verified by Tesla.
QWill reducing memory affect Optimus robot performance?
Musk reportedly said performance would not be affected, but that claim is unverified. Micron has separately stated that humanoid robots need 200 GB or more of memory, which is above the reported figures, but that does not directly confirm or refute Tesla's claim.
QWhy is Tesla cutting memory, according to reports?
Reports say Musk described the cut as the only way to scale Optimus production amid an industry memory shortage. No official Tesla source has confirmed this rationale.
QIs Micron's 200 GB requirement specific to Tesla?
No, Micron's statement is a broad industry benchmark for humanoid robots, not a Tesla-specific design requirement. It was relayed by Benzinga and does not reflect Tesla engineering documents.
QShould Tesla owners do anything about these reports?
No immediate action is needed. The reported changes involve future AI chips, not current vehicles. Owners can check their Autopilot computer version in Controls > Software > Additional Vehicle Information, but no retrofit has been announced.
Information compiled from official statements and independent reporting, published October 3, 2026. Confirmed facts and unconfirmed/speculative points are separated above.
