Vercel Switches Inbound Sales to 14 Hard Rules
Vercel's COO reports simplifying their inbound sales agent from a 1,000-line prompt to 14 deterministic rules, reserving LLMs for judgment calls at ~$1k/year cost.
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Vercel restructured its inbound sales agent, moving from a 1,000-line prompt to 14 deterministic rules, using large language models only for tasks requiring human-like judgment.
Initially, the agent relied on complex prompts written by top SDRs. As the business scaled, the model frequently violated embedded rules. The team encoded qualification steps into hard logic (e.g., Salesforce lookups) and reserved ambiguous scenarios for the model.
According to Vercel COO Jeanne DeWitt Grosser, this architecture improved stability and reduced annual inference and infrastructure costs to approximately $1,000.