Harmony

Overview

Self-improving voice agent for call centers, built inside monday by nizan-shifman’s team (~16 people as of 2026-05-06). Targets the call-center labor-replacement market, sized at roughly $350B(6Mphoneagents)ofwhichonly$1.5B ARR is currently captured by incumbents — Nizan’s framing of it as still “early stage.”

Relationships

• Internal product of monday.
• Heavy daily user of saar-arbel’s Brain prototype.
• Competes adjacently with sierra in call-center territory.
• Built primarily on cursor + Brain + NoteTaker MCP.

Notes

• The product Nizan keeps citing in the meeting as proof the Brain is already painkiller-grade. Harmony’s whole landing page, pricing strategy, and competitive SWOT were generated from a brand-new Cursor agent that used only the Brain context — without manually attaching docs or transcripts.
• Generates competitive analyses by pulling categories (CRM-native incumbents, voice-platform competitors, AI-GTM peers like Alta, agent-native challengers) from accumulated brain context across many meetings — used as evidence for context-os-brain.
• 2026-06-13: also used as evidence for revenue-cycle-brain. The team described Harmony/Monday experiments that push downstream call and customer-lifecycle insight back into acquisition and messaging.
• 2026-06-14: Nizan added origin context: the global-maximum / revenue-cycle direction was close to Harmony’s original exploration. Saar and Tom built a four-day Monday MVP that acquisition managers found valuable, but the team pivoted toward voice/call centers after the One AI / Vitaly path and Monday’s distribution made that route more attractive.

Mentioned in

• 2026-05-06-brain-os-strategy-brainstorm — primary case study throughout; Nizan’s existence-proof that the Brain works in production.
• 2026-06-02-directions-account-management-vertical — daniela, Harmony’s account manager, is the subject of saar-arbel’s AM Brain pilot; her last ~100 call transcripts are the input dataset demonstrating the per-AM Brain architecture.
• 2026-06-13-directions-revenue-cycle-and-construction-poc — reference environment for both AM scaling and closed-loop GTM experiments.
• 2026-06-14-directions-from-home-strategy-brain-dogfooding — origin-story detail for the revenue-cycle idea and why Harmony moved toward voice/call-center despite the earlier global-maximum MVP.