Technology
CoreWeave Sandboxes Launches to Accelerate Reinforcement Learning, Agent Tool Use, and Model Evaluation
LIVINGSTON, N.J., May 14, 2026--CoreWeave, Inc. (Nasdaq: CRWV), The Essential Cloud for AI™, today announced CoreWeave Sandboxes, an execution layer that gives AI researchers and platform teams secure, isolated environments for running reinforcement learning (RL), agent tool use, and model evaluation. The new offering is available on a customer's own CoreWeave infrastructure or as a serverless runtime through Weights & Biases (W&B).
About this update from Coreweave, Inc.
[{"type":"image","alt":"","displaySize":"","headline":null,"caption":"","credit":null,"className":"","disableSlideshowImg":false,"size":{"original":{"width":480,"height":347,"url":"https://media.zenfs.com/en/business-wire.com/127d30a0dd8f145ff51af1eccab8d023"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/PfNtKPnCHQzAGf3fK_iCxQ--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTY5NA--/https://media.zenfs.com/en/business-wire.com/127d30a0dd8f145ff51af1eccab8d023","width":480,"height":347},"resize_sm":{"url":"https://s.yimg.com/ny/api/res/1.2/zXWBm.__Fmf7QXMSz_Ks3w--/YXBwaWQ9aGlnaGxhbmRlcjt3PTY0MDtoPTQ2Mw--/https://media.zenfs.com/en/business-wire.com/127d30a0dd8f145ff51af1eccab8d023","width":480,"height":347}},"lazy":false},{"type":"image","alt":"","displaySize":"","headline":null,"caption":"","credit":null,"className":"","disableSlideshowImg":false,"size":{"original":{"width":480,"height":287,"url":"https://media.zenfs.com/en/business-wire.com/53dd2c96b205c57ee5bb81c2cdb10665"},"resized":{"url":"https://s.yimg.com/ny/api/res/1.2/htQspHmytKKWSXRmLbQ7kw--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTU3NA--/https://media.zenfs.com/en/business-wire.com/53dd2c96b205c57ee5bb81c2cdb10665","width":480,"height":287},"resize_sm":{"url":"https://s.yimg.com/ny/api/res/1.2/1N90gkKR0SeTx95WoIDBcA--/YXBwaWQ9aGlnaGxhbmRlcjt3PTY0MDtoPTM4Mw--/https://media.zenfs.com/en/business-wire.com/53dd2c96b205c57ee5bb81c2cdb10665","width":480,"height":287}}},{"type":"text","content":"Secure, isolated environments for running AI tool use and evaluation at scale","length":77,"tagName":"p","attribs":{}},{"type":"text","content":"LIVINGSTON, N.J., May 14, 2026--(BUSINESS WIRE)--CoreWeave, Inc. (Nasdaq: CRWV), The Essential Cloud for AI™, today announced CoreWeave Sandboxes, an execution layer that gives AI researchers and platform teams secure, isolated environments for running reinforcement learning (RL), agent tool use, and model evaluation. The new offering is available on a customer's own CoreWeave infrastructure or as a serverless runtime through Weights & Biases (W&B).","length":465,"tagName":"p"},{"type":"text","content":"As AI systems evolve from generating outputs to taking actions, training them requires more than compute alone. Advanced AI workflows such as RL and evaluation require isolated execution environments that run code safely, maintain information across steps, and scale acro...