Jason Warner, who helped incubate GitHub Copilot as GitHub's CTO, met Eiso Kant in 2017 when he tried to buy Kant's AI-for-code startup. Six years later they founded Poolside to build their own foundation models for software development, trained with reinforcement learning from code execution. Poolside raised a $126 million seed and a $500 million Series B, planned a 2GW data center campus in Texas, and then saw both a CoreWeave partnership and a reported $2 billion round fall apart in 2026.
Jason Warner, who helped incubate GitHub Copilot as GitHub's CTO, met Eiso Kant in 2017 when he tried to buy Kant's AI-for-code startup. Six years later they founded Poolside to build their own foundation models for software development, trained with reinforcement learning from code execution. Poolside raised a $126 million seed and a $500 million Series B, planned a 2GW data center campus in Texas, and then saw both a CoreWeave partnership and a reported $2 billion round fall apart in 2026.
Products from the same category with overlapping descriptions or details. They are not reviewed alternatives; compare features and current plans before choosing.
Tecton was founded in 2019 by Mike Del Balso, Kevin Stumpf and Jeremy Hermann, who had built Michelangelo, Uber's internal machine learning platform, and its…
Weights & Biases was founded by Lukas Biewald, Chris Van Pelt and Shawn Lewis after Biewald, who had co-founded the training-data company CrowdFlower with Va…
Jason Warner, who helped incubate GitHub Copilot as GitHub's CTO, met Eiso Kant in 2017 when he tried to buy Kant's AI-for-code startup. Six years later they founded Poolside to build their own foundation models for soft
Tecton was founded in 2019 by Mike Del Balso, Kevin Stumpf and Jeremy Hermann, who had built Michelangelo, Uber's internal machine learning platform, and its feature store. Seeing data science teams wait months to get mo
Metabase began as an internal analytics tool that Sameer Al-Sakran, then CTO of the company studio Expa, built so Expa and its startups could put key data in the hands of their teams. Spun out as a separate company with
Weights & Biases was founded by Lukas Biewald, Chris Van Pelt and Shawn Lewis after Biewald, who had co-founded the training-data company CrowdFlower with Van Pelt, took an unpaid internship at OpenAI and struggled to ke