# Built to Spec Pricing > Custom AI software, priced from a written spec. The figures below are typical engagement ranges, not fixed tiers or per-seat plans. Every project is scoped and quoted before any work starts, and you own what we build. ## How pricing works - It starts with an AI audit call: we look at how your business runs and where AI actually pays off. Book it at https://www.builttospec.ai/contact. - You get a written spec and a price against it before you commit. No number is quoted off a generic tier. - Most builds land in the $5,000 to $50,000 range, with the first version or sync live in weeks, not quarters. - You own the software we build, source and all. There is no per-seat license and no lock-in. ## Typical engagement ranges - Focused automation or a single AI agent, one workflow such as answering, follow-up, or booking: $5,000 to $15,000. - Integration and data sync across the tools you already run, scoped by how many systems and how clean the data is: $8,000 to $25,000. - Custom AI software or a custom operating system that replaces a patchwork of tools: $20,000 to $50,000 and up. - Ongoing support, monitoring, and iteration after launch: a monthly retainer scoped to the system. ## What sets the number - How many systems and workflows are in scope. - How clean and connected your data is today. - Whether you need one focused build or a full custom system. - How much ongoing support and iteration you want after launch. ## More - Services: https://www.builttospec.ai/services - Machine-readable site index: https://www.builttospec.ai/llms.txt - Contact: builders@builttospec.ai