Side-by-side comparison of AI visibility scores, market position, and capabilities
Fennel is a feature engineering platform for ML teams that provides real-time computation, historical backfill, and point-in-time correct training datasets from a single definition.
Fennel is a machine learning feature platform founded in 2021 by former Meta and Microsoft engineers, raising $9M to build a unified system for real-time and batch feature computation. The platform allows ML engineers to define feature pipelines once and have Fennel automatically handle both real-time serving and historical backfill for training dataset generation, ensuring point-in-time correctness so that training data accurately reflects what would have been known at inference time. This eliminates a major source of training-serving skew in production ML systems. Fennel integrates with Python, supports streaming sources like Kafka alongside batch sources, and provides an SDK for defining feature transformations with strong typing and testing support. The company serves ML teams building production systems where feature correctness is critical for model reliability, including financial services, e-commerce, and recommendation systems. Fennel competes with Tecton and Chalk in the feature store market while focusing on the correctness guarantees and Python developer experience that reduce bugs in production ML systems. The platform also handles feature discovery and sharing across teams to reduce duplicate feature development work.
Indoor vertical farming company using AI-optimized growing systems. San Francisco, CA. Raised $940M+ including $400M from SoftBank. Partners with Walmart for US farms.
Plenty is a San Francisco-based indoor vertical farming company that uses AI, machine learning, and robotics to grow leafy greens and other produce in controlled indoor environments. The company has raised over $940 million from investors including SoftBank Vision Fund, which invested $200 million in 2017, and has positioned itself as the technology leader in data-driven indoor agriculture.\n\nPlenty's farms use precisely controlled light, temperature, humidity, and nutrient conditions to grow crops that are free from pesticides, use 99% less land, and consume significantly less water than conventional field agriculture. The company's AI systems continuously optimize growing conditions based on sensor data, learning to improve yields and quality across crops and growing cycles.\n\nIn 2022, Plenty announced a landmark partnership with Walmart to supply leafy greens from a new large-scale facility in Compton, California. This partnership provided both a major commercial anchor and significant additional funding from Walmart, validating Plenty's technology and business model at scale. The company also operates a dedicated strawberry R&D partnership with Driscoll's, the world's largest berry company, demonstrating the platform's potential beyond leafy greens.
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