How Delphi ships 100 times a day with its Python backend on Vercel

Delphi, a company with ten engineers, ships to production over 100 times a day and first sees its AI agents' work on live preview links, according to Vercel.

Delphi turns a person's writing, recordings and teaching into a digital mind that others can talk to, and has ten engineers. Its engineers hand most problems to AI agents that run in the cloud, and every change gets a live preview link. The account is a customer story published by Vercel, the cloud platform Delphi uses.

• Each change the agents push gets its own live web address, which anyone can open from a phone or a Slack thread. That preview is where engineers first see what an agent built.
• Delphi ships changes straight to production without a staging step. New features stay behind switches called feature flags, and the team runs A/B tests on them.
• Delphi's chief product officer and its growth teams build and release their own dashboards, prototypes and experiments.
• An internal agent answers the customer success team's questions in Slack, and gives an engineer a likely cause and a proposed fix.

When agents do most of the building, a live preview of each change lets people outside engineering judge the work where it runs. This is an inference, and the article is a vendor's account of a customer.

Derived by Working Surface from the article. Source line: The preview deployment is where they first see what the agent built.

17 September 2026: when agents build, people's judgment moves to stating the problem and checking the result.