Baseten buys Blaxel, a startup that builds sandboxes for AI agents

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AI inference company Baseten has acquired Blaxel, a startup that builds secure execution environments, or sandboxes, for AI agents. Baseten co-founder and chief technology officer Amir Haghighat told Axios Pro about the deal, which the outlet reported first on Thursday. Baseten later announced the acquisition.

Axios describes Blaxel as a San Francisco startup. The announcement did not disclose financial terms.

Blaxel builds sandboxes based on microVMs, small isolated virtual machines. Each agent gets its own. According to the release, the sandboxes spin up and resume up to five times faster than competing products.

In a joint blog post, the companies said a Blaxel sandbox can suspend and resume in 25 milliseconds. It can also sit idle for months at close to zero cost.

Its other products include Agent Drive, a distributed filesystem that agents can share, and a networking layer that connects agents to tools, MCP servers, APIs...

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