Key Moments

Why Physical AI Is the Next Platform Shift

Y CombinatorY Combinator
Science & Technology5 min read21 min video
Jul 25, 2026|1,095 views|35
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TL;DR

Massive amounts of data are needed to train AI for the physical world, and Encord is building the platform to manage it all, but it's expensive.

Key Insights

1

The 'bitter lesson' in AI development suggests that scaling systems with more data and compute is more effective than manual feature engineering.

2

Encord's product market fit was a slow, daily compound rather than a single breakthrough moment, with the market starting to come to them more rapidly after ChatGPT's release.

3

Despite an initial presence in healthcare, Encord has pivoted its focus to 'Physical AI' due to market demand, now serving sectors like robotics, autonomous vehicles, and logistics.

4

Encord deals with multiple petabytes of multimodal data, handling more data than was used to train GPT-4.

5

The company's go-to-market strategy prioritizes locations based on customers, then talent, then investors, leading to a significant operational presence in the US Bay Area despite being founded in London.

6

Founders should embrace the emotional rollercoaster of startups, viewing challenges not as things to mitigate but as an inherent part of the journey to be ridden and enjoyed.

The 'bitter lesson' and the shift in AI development

Eric Landau, co-founder of Encord, draws a parallel between his career trajectory and the evolution of AI. He explains the 'bitter lesson' in AI, which posits that instead of painstakingly engineering features based on domain expertise, the more effective approach is to scale systems with more data and computational power. Landau's early career in particle physics and high-frequency trading involved significant feature engineering based on the specific physics or market factors. However, the current AI paradigm, as exemplified by large language models, involves feeding vast amounts of raw data into machine learning systems and letting them learn. This shift underscores the increasing importance of data quantity and quality in driving AI performance.

From lucrative quant career to founder's journey

Landau shares a surprising decision: quitting a highly profitable quant trading career during a period of extreme market volatility and profitability for his desk. He made this leap to pursue his belief in AI as the paradigm shift of the generation. Despite the immediate financial sacrifice, Landau found more personal reward in the concrete problems and value creation of building a startup, even during its lean 'desert' years, compared to the existential questions he faced in his previous high-paying role. This highlights a founder's motivation often stemming from a belief in a larger mission rather than solely financial gain.

Product market fit as a slow compound

Encord experienced product-market fit not as a sudden event, but as a gradual, daily compound. Landau contrasts this with companies that achieve fit through a single product launch or market shift. For Encord, it was the continuous improvement of their product coupled with a market that increasingly recognized the importance of AI, particularly after the advent of ChatGPT. The market began to 'come to them' faster. A defining, albeit retrospective, moment of achieving fit was when sales closed for companies they were no longer deeply involved with, indicating a level of market traction where their offering was valuable even without their granular participation in every deal.

The pivot to physical AI

Initially focusing on computer vision, Encord's thesis was that AI systems would naturally become multimodal, mirroring human sensory input. They chose vision as a starting point due to its data density and the expertise it would build. As the market evolved, 'Physical AI' emerged as the dominant application for multimodal AI. This led Encord to shift its focus to sectors like robotics, autonomous vehicles, and logistics, capitalizing on the significant economic activity (80%) involving manipulation or movement in the real world. The company anticipates a future where robots are ubiquitous, fundamentally changing various industries.

Scaling data for physical AI

Encord operates at a massive scale, dealing with multiple petabytes of multimodal data, exceeding the estimated data used to train GPT-4. They manage this through a comprehensive data pipeline that includes collection, curation, annotation, enrichment, and evaluation. The company maintains a facility in the Bay Area that emulates film sets for robot data collection in specific environments, particularly for companies in earlier stages requiring pre-training data. However, much of the data is also ingested directly from customer production loops, encompassing video, sensor, audio, and language.

Strategic location and talent acquisition

Despite being a London-founded company, Encord has established significant operations in the U.S. Bay Area, driven by a philosophy of being where critical stakeholders are: customers, talent, and investors, in that order. With most of their customers in the U.S., particularly the Bay Area, the co-founder's relocation and the facility's establishment were strategic moves to foster closer customer relationships. While acknowledging London's strong talent pool for AI and engineering, the company prioritizes proximity to its customer base for effective business development and collaboration.

Navigating competition and standing out

Encord faces competition from other data companies, but they view healthy competition as a driver for improvement. They differentiate themselves through a deep focus on 'Physical AI' and the scalability of their data operations, capable of handling petabyte-level datasets which many competitors struggle with. Their foundational investments in infrastructure have positioned them to manage this scale effectively. While they understand that their full-scale product might be out of reach for very early-stage startups, they typically engage with companies that have outgrown internal tools and require scalable solutions for moving from Proof-of-Concept to production.

Embracing the startup rollercoaster

Landau's core advice to founders is to embrace the inherent emotional rollercoaster of starting a company. Instead of trying to mitigate the high highs and low lows, founders should ride them and even try to have fun. This perspective, he notes, is developed over time through experiencing enough fluctuations. The realization that one has more control over their mental state than initially perceived allows for a more adaptive and enjoyable entrepreneurial journey. This mindset shift is crucial for sustained resilience and effectiveness in the face of inevitable challenges and triumphs.

Common Questions

'The Bitter Lesson' suggests that AI systems benefit more from scaling (more data, compute) rather than intricate feature engineering or domain expertise. This idea is relevant as it reflects the trajectory of AI development and Eric Landau's career path.

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