Tesla’s AI chief says Optimus will have to “fill big shoes” as Model S and Model X production winds down

Tesla’s artificial intelligence chief, Ashok Elluswamy, said Optimus has “big shoes to fill” after Tesla’s factory prepares for the next phase of production that includes its humanoid robot program. The remarks were made in the context of Tesla’s Fremont site shifting away from production of the premium Model S and Model X vehicles, according to a report published July 14 by Yahoo Finance.

Elluswamy’s comments positioned Optimus as more than a side project, describing the robot program as the successor to vehicles that have historically represented a flagship slice of Tesla’s lineup. “Big shoes to fill” suggests a high bar for performance and impact, even as the underlying product categories differ sharply between automobiles and humanoid robotics.

The report also tied the remarks to an operational change at Tesla’s Fremont facility, where Model S and Model X production lines are reportedly being closed or sunset as part of a broader retooling plan. Fremont has long been central to Tesla’s manufacturing footprint, and changes there are typically read by investors as indicates about where management wants to allocate capacity and engineering attention next.

While Elluswamy highlighted optimism for Optimus, Tesla has not indicated in the reporting described here what the company’s specific near-term robot production targets are, how quickly manufacturing will scale, or what the first commercial deployments would prioritize. The report similarly does not outline milestones for Optimus that would allow outside observers to quantify progress against the “big shoes” standard.

Tesla’s Optimus program, in general terms, aims to build humanoid robots that can perform tasks in industrial settings and potentially expand to other use cases. For Tesla, the strategic appeal is also linked to its broader AI and robotics approach, which the company has framed as tightly coupled to its long-term autonomy and machine-learning development. In that context, remarks by the company’s AI leadership can be read as an effort to reinforce that robotics is becoming a core part of Tesla’s technology narrative, not just an experimental platform.

The Model S and Model X sunset described in the report underscores a recurring pattern in Tesla’s manufacturing strategy: shifts in product cadence can coincide with large factory changes, often ahead of new platform rollouts. However, the Yahoo Finance report focuses on Elluswamy’s framing and the Fremont transition rather than providing detailed plant-level schedules, volume expectations, or the degree of overlap between vehicle and robot production during the conversion.

As with many early-stage robotics roadmaps, uncertainty remains around how Optimus will perform in real-world conditions and how quickly it can transition from prototype demonstrations to sustained manufacturing. The reporting here does not provide information on reliability targets, cost-per-unit goals, or how Tesla will validate safety and task performance at scale.

What to watch next is whether Tesla follows up with concrete production and deployment details for Optimus, such as manufacturing timelines, pilot customer plans, or measurable milestones. The company’s messaging from AI leadership may announcement internal confidence, but the market will likely look for factory disclosures and operational metrics to move beyond aspiration to execution.