Tony Zhao and Cheng Chi, co-founders of Sunday Robotics, discuss the state of AI robotics, framing it as being between a "GPT moment" (the core technology is known) and a "ChatGPT moment" (a scalable consumer product). They detail the key research, data collection innovations, and full-stack engineering required to build Memo, their general-purpose home robot designed to free humanity from chores.
A reflection on Richard Sutton's "Bitter Lesson," arguing that while his critique of LLMs' inefficiency and lack of continual learning is valid, imitation learning is a complementary and necessary precursor to true reinforcement learning, much like fossil fuels were to renewable energy.
Developing general-purpose robots requires a shift from specialized, single-task systems to broad foundation models. This is achieved through a combination of large-scale, diverse, real-world data collection and a specific training methodology: pre-training on all available data and then fine-tuning on a curated, high-quality subset of demonstrations. This recipe, combined with architectural innovations to preserve the capabilities of Vision-Language Model (VLM) backbones, enables robots to perform complex, long-horizon tasks, generalize to unseen environments, and respond to open-ended human instructions.