About — Vivun
about · vivun

Most AI generates language.
Vivun builds agents that generate reasoning.

Vivun specializes in one thing: taking expert knowledge and encoding it into AI systems that reason, not just respond. We extract mental models, formalize them structurally, and build agents that operate with the discipline of elite practitioners.

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Why most AI pilots fail to deliver ROI. The gap isn't capability — it's reasoning.

When organizations ask AI to navigate multi-step decisions, performance degrades. The answer sounds convincing. The logic doesn't hold.

AI can sound like an expert. It doesn't reliably reason like one.

Most organizations assume scale will close the gap. It won't. The gap isn't in model size — it's in architecture. LLMs reconstruct a world model from scratch on every prompt. That breaks anything requiring multi-step domain logic.

Human experts don't improvise logic from scattered documents.
They reason from an internalized, structured model of how their domain works.

01

Experts use structured mental models

They don't reconstruct their worldview on every prompt.

They operate from internalized structure built through years of deliberate practice.

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02

LLMs lack persistent world models

Every prompt starts cold. In high-stakes, multi-step environments, that difference compounds.

With every inferential hop, the lack of a persistent world model compounds — producing answers that sound right but don't hold up under scrutiny.

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03

Fluency is not comprehension

When AI produces a fluent answer, we assume understanding.

But sounding right and being right are different things — especially when the logic can't be inspected.

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04

Structure must be given, not hoped for

If you want AI to reason like an expert, you must give it the expert's world model.

That means explicit ontologies, knowledge graphs, constraints, and structured memory — not prompts and prayers.

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The domain changes. The method doesn't. We've applied this discipline across music, finance, and enterprise sales — each time producing agents that reason with the discipline of elite practitioners in that field. Four steps. Applied across every domain we enter.

01

Extract the expert's mental model.

We begin by deeply modeling how experts in a domain actually think — not their documented processes, but the structured cause-and-effect reasoning they apply under real conditions. This step is what most AI implementations skip entirely.

02

Make it explicit.

We translate tacit expertise into formal ontologies: how the domain works, how entities relate, what constraints apply, what decisions are permitted and under what conditions.

03

Encode it structurally.

Expert knowledge is encoded into knowledge graphs — typed entities, defined relationships, explicit constraints, valid decision paths. The LLM serves as extraction and orchestration engine. It doesn't invent structure; it operates over it.

04

Build the system around it.

Reasoning is guided through structured orchestration over a persistent world model. Every conclusion traces back to explicit structure. Every step is inspectable. The logic persists across interactions.

Each industry required modeling a fundamentally different kind of expertise. The architecture — extract, formalize, encode, reason — held across all three.

industry_01

Music

We modeled the reasoning behind creating a platinum album — not just melodies or lyrics, but the structured decisions that make a record succeed. Expert creative judgment, codified.

01
domain
Creative Industry
expertise modeled
Platinum Album Production
output
Expert creative judgment, codified
industry_02

Finance

We modeled the operating principles behind running a world-class hedge fund — not just market data, but structured cause-and-effect reasoning under uncertainty.

02
domain
Financial Services
expertise modeled
Hedge Fund Operations
output
Structured reasoning under uncertainty
industry_03

Enterprise Sales

Hero is an AI sales teammate that helps teams win the moments that decide deals — reasoning over deal state, stakeholder dynamics, and competitive context in real time.

03
domain
B2B Sales
expertise modeled
Deal Qualification & Execution
output
Hero — AI sales teammate

Vivun was founded on the premise that AI would only become enterprise-grade when grounded in structured domain knowledge. The founding team brought together deep expertise in sales engineering, AI architecture, and enterprise software — and has spent the last several years turning that premise into a patented, production-grade methodology.

Matt Darrow
Matt Darrow
CEO
John Bruce
John Bruce
CTO
Joseph Miller
Joseph Miller
Chief AI Officer
Dominique Darrow
Dominique Darrow
CCO
Claire Bruce
Claire Bruce
COO, JD
Jamie Brown
Jamie Brown
CISO
Kevin Spinelli
Kevin Spinelli
CFO
Jarod Greene
Jarod Greene
CMO
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Ready to build AI that actually reasons?

We work with a small number of organizations at a time — ones where the problem is real, the stakes are high, and the appetite for a fundamentally different approach is genuine.

If that's you, we'd like to hear about the problem you're trying to solve.

Get in touch →