EliseAI Raises $350M at a $4B Valuation

The hardest permission in enterprise software is the right to act inside a customer's operating workflow. EliseAI says it has raised $350M at a $4B valuation to expand that authority across housing and healthcare, two essential-service industries where a missed handoff can reach a resident, a patient, or the staff member expected to repair it.

Andreessen Horowitz, Bessemer Venture Partners, and Ontario Teachers' Pension Plan led the financing, with Sapphire Ventures and Navitas Capital participating. EliseAI says the capital will expand the workflows its AI can automate, accelerate product development, and grow its engineering, deployment, and sales teams.

The valuation rests on a company-reported operating base that is already large: more than $200M in annual recurring revenue, five consecutive years of year-over-year revenue doubling, and reach across one in five U.S. apartments. The larger industry signal is that investors are pricing vertical AI around the amount of real work it can carry, not simply the quality of its conversation.

What EliseAI Announced

EliseAI announced the financing on September 29, 2026. The company did not disclose a formal round series, security type, ownership terms, or a primary-versus-secondary split, so the clean accounting is a $350M growth financing at a stated $4B valuation rather than an invented Series F label.

The round follows EliseAI's $250M Series E in August 2025, which Andreessen Horowitz led at a valuation above $2.2B. Bessemer Venture Partners joined that financing, while Sapphire Ventures and Navitas Capital returned. The new transaction brings Ontario Teachers' Pension Plan into the lead group and nearly doubles EliseAI's disclosed valuation in roughly 13 months.

From Conversations to Operational Authority

Minna Song, co-founder and CEO, and Tony Stoyanov, co-founder and CTO, started EliseAI in 2017 with a focus on housing. The first job was easy to describe and hard to execute at scale: answer leasing and resident questions across text, email, chat, and voice without losing the context that makes the reply useful.

That entry point gave EliseAI a path into the rest of the resident lifecycle. Its products now cover leasing, tours, maintenance, renewals, delinquency, audits, and other property workflows. Customers are no longer buying only faster communication; they are deciding which pieces of the operation software can handle while preserving permissions, rules, and the history behind each action.

The company's newer Apollo agent makes that progression visible. EliseAI says Apollo works inside EliseCRM and related applications, inherits each user's permissions, and can perform actions such as messaging prospects, updating knowledge, reassigning tasks and tours, changing settings, and building dashboards. The company says it uses a semantic layer over Elise data and has tested the agent across more than 7,000 evaluations.

Housing Built the Operating Context

Housing is a useful proving ground because the work rarely stays in one clean software box. A leasing question can turn into a tour, an application, a document request, a maintenance issue, a renewal, a balance, or a call from somebody who expects the next employee to know what the last conversation established.

EliseAI's September announcement says the platform now reaches one in five U.S. apartments. In June, the company had reported one in six while announcing that it had passed $200M in ARR, so the latest figure represents a more recent company-reported measure of adoption rather than an independently audited market count.

The business value is tied to how much fragmented work the system can absorb without creating another layer for employees to supervise. A property operator does not need a charming answer if the tour remains unscheduled, the work order reaches the wrong queue, or the renewal loses the resident's prior context. Vertical AI becomes useful when the response, decision, and action remain connected.

Healthcare Raises the Consequence

EliseAI expanded into healthcare in 2023, applying its workflow model to scheduling, patient intake, prior authorizations, billing, prescription follow-up, and front-desk communications. The company says its technology now supports 2M patients, though that figure, like its ARR and apartment reach, comes from EliseAI rather than public financial reporting.

The move matters because healthcare gives operational automation a less forgiving set of exceptions. A housing workflow may influence occupancy, collections, labor, and resident satisfaction. A healthcare workflow can affect access to care, wait times, sensitive information, and whether a patient reaches the right person before abandoning the effort.

Bessemer Venture Partners described EliseAI as a system of action that integrates with core industry software rather than sitting above it as a generic assistant. That distinction now carries much of the investment thesis. The platform has to understand domain rules well enough to take work off staff while leaving control, escalation, and accountability intact.

What the $350M Changes

EliseAI says the new money will widen the set of workflows its AI can automate and support larger engineering, deployment, and sales teams. Deployment deserves a place beside product development in that list because vertical software does not become infrastructure through a download. It gets there by surviving integrations, permissions, exceptions, training, and the daily habits of customer teams.

The financing also gives EliseAI room to push a business that began in property communications toward a broader operating layer across housing and healthcare. Andreessen Horowitz's earlier investment case emphasized the company's reach across essential services and its expansion from email and text into a multimodal platform. The current round funds the next step, where the system is expected to do more of the work rather than merely discuss it.

What This Signals for Vertical AI

The market has spent several years rewarding general-purpose models for what they can say. EliseAI's $4B valuation reflects a different measure: how deeply a company can embed AI inside one industry's economics, data, integrations, and operating decisions, then carry that discipline into another essential-service market.

That path also raises the standard for proof. Company-reported growth and reach help explain investor conviction, but customers will keep judging whether automation improves the operation after the demo ends. EliseAI now has more capital to request the next permission inside those workflows, and more buildings and practices where every granted permission has to remain worth the trust behind it.