How Much Does a Private AI Assistant Cost in 2026?

Ask a vendor what private AI costs and you usually get a discovery call instead of a number. Here are the actual numbers, what drives them, and the comparison math that matters, so you can decide whether this is worth a conversation before you book one.

The pricing model: platform plus seats

Managed private AI deployments are priced like infrastructure plus usage. A monthly platform fee covers your dedicated cloud environment, hosting, maintenance, monitoring, and updates. A per seat rate covers each person using it. For our deployments that means a platform fee starting at $500 per month plus $20 to $25 per seat, with AI model usage included. A 20 person firm lands around $900 to $1,000 per month all in.

The one time setup fee

Expect a deployment fee quoted up front, driven by how many data sources we connect and how much customization you want on day one. Simple deployments with document upload and branding sit at the low end. Deployments with CRM, accounting, and document system integrations sit higher. Reputable providers quote this as a fixed price before you sign, not as an hourly meter.

What drives cost up, and what does not

• Drives cost up: number of connected systems, custom workflows, client facing access, unusual compliance requirements
• Does not drive cost up: how much your team chats, number of documents, switching between AI models
• Watch for: vendors who meter tokens and pass usage anxiety to you, and enterprise platforms with five figure monthly minimums built for 1,000 seat companies

The comparison math

ChatGPT Team costs $25 to $30 per user per month. At 20 users that is $500 to $600 monthly for a generic assistant on shared infrastructure with one vendor's models. A private deployment for the same team runs about $400 more per month and delivers your own environment, your documents connected with role based access, every major AI model, and an answer for security questionnaires. If your average employee saves two hours per month, the difference pays for itself before lunch on the first day.

The cost of doing nothing

The alternative to a sanctioned tool is not zero AI usage. It is untracked usage on personal accounts, which prices differently: one confidentiality incident with a top client, one awkward answer on a security review, one departed employee whose personal account still holds your proposals. Nobody invoices you for those. They just cost more.

For a fixed quote against your actual team size and data sources, book a 30 minute demo. You will leave the call with a number, which is how buying software should work.