AI app cost calculator.

Three questions. Real budget range in under a minute. Priced from a solo AI-native consultancy that ships 20+ projects a year, not from a lead-capture form pretending to be a calculator.

Pick the closest match. Custom scope is fine, this narrows the price band.
How custom is what you need?
CRM, Stripe, HubSpot, Xero, custom APIs, calendar, storage, etc.
Estimated cost
Voice AI agent, standard scope
£25k – 40k
Fixed-scope, 6 weeks to ship
Typically includes
  • US or UK number provisioned
  • One primary workflow scripted and hardened
  • Post-call transcript + summary emailed
  • Watchdog health check
  • 1-2 integrations wired
Book a call to lock a firm quote → See all fixed-scope prices

How this calculator works

The range is real, not lead bait. Numbers come from our own six fixed-scope SKUs, adjusted for complexity and integration count. Every project is quoted in writing after a 30-minute scoping call, and the written number sits inside the range shown here in almost every case.

Why is it cheaper than a traditional dev shop? AI-native delivery compresses the build hours. What a 4-person team used to ship in 3 months, one senior engineer directing AI agents ships in 6 weeks. The saved hours become saved cost, and we pass the saving through instead of banking it. See the pricing page for a full side-by-side with a traditional dev shop for the same scope.

What's not included in the number. Third-party costs pass through at cost (Twilio minutes, LLM inference, hosting, domains). We show these separately, they typically add £50-500/month depending on scale.

What about ongoing support? Every fixed-scope build comes with the option of a support retainer, £1-3k/month. AI software rots faster than traditional software (data sources retire, model APIs deprecate, fallbacks lie). The retainer keeps your build healthy.

Prices last verified August 2026. All numbers exclude VAT.