Amplence vs Presto Voice

Amplence sells engineering labor with a defined output. Its published work spans a legal RAG system trained on 46 successful Amazon appeal templates that drafts a Plan of Action in under three minutes, a due-diligence platform that queries government license, insurance, lien, OSHA and court databases and returns a risk-scored PDF, plus invoice parsing with duplicate/bank-detail/PO-match checks routed to a named approver in Slack. Escalation is a design decision: chatbots ship with tiered human handoff and intake agents with hard compliance stops. You get workflows in n8n or Zapier, data in Supabase, deploys on Vercel or AWS — all portable, all yours to inspect.

Presto Voice is the opposite shape: a closed, managed service aimed at one physical moment. It takes orders at the speaker post, upsells add-ons and specials every transaction, and runs 24/7. Presto handles POS and headset integration so lanes go live without a shutdown, and as of Sept 21, 2026, order data flows into Toast via the Toast Partner Ecosystem. You don't tune prompts or pick models — Presto runs a spectrum of Voice AI approaches and reports non-intervention, upsell offer and revenue lift back to you. If your team wants to own the stack, that's a mismatch; if you want accountability for the lane, it's the point.

Neither vendor publishes a price, and they arrive at "contact us" from opposite directions — which matters for how you should read the quotes.

Amplence's cost is project-shaped. You're paying for scoping, build and delivery of a system: a RAG pipeline over your documents, an n8n invoice-approval workflow, a multilingual support agent. The relevant numbers are build effort, how many integrations are in scope, and who maintains it after handoff — not a per-seat line item. The listed not-for is explicit that buyers shopping a published per-seat price list aren't the fit. Expect to bring internal capacity to review a proposal and sign off on edge cases; that review time is a real cost.

Presto's cost is deployment-shaped: per-lane or per-store rollout across a chain, with integration, install and ongoing support bundled, plus ROI reporting you can compare against your current drive-thru labor and average-order-value baseline. The vendor-published figures (up to 95% non-intervention, up to 88% upsell offer rate, up to 6% monthly incremental revenue) are the numbers you'd negotiate against, alongside the Sept 28, 2026 $10M raise from Remus Capital-affiliated and existing investors, which signals continued deployment investment. For both, ask for a written scope and the exit terms before signing — with Amplence, who owns the code; with Presto, what happens to a lane if you change POS.