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Butter
ActiveEmbedded Sandboxes for Agents
Winter 2025Founded 20242 peopleSan Francisco, CA, USA
↻ Pivot / rename signal
This company has previously operated under “Pig”. A rename frequently marks a pivot in positioning or product — useful raw material for variant ideas.
About
Butter is building bVisor, an incredibly lightweight sandbox runtime for AI agents. It embeds directly into your local process, providing a safe bash environment without the overhead of VMs or remote infra.
Founders · 1
Erik DuntemanFounder
Founder and CEO at Butter.dev. Previously founded Banana.dev, a serverless GPU platform where we hosted production-critical inference jobs for more than 3,000 AI teams. Later joined our competitor Modal.com as a Growth Engineer. I also run ultras!
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