Custom AI Tool Development
Internal tools built around your workflow — quoting, triage, reporting, review. Fixed scope, fixed price, acceptance criteria up front.
Custom AI tools · For US & EU SMBs
We build the AI tool
your business actually needs.
Not a strategy deck. Not a chatbot bolted onto your homepage. One business process — wired into your stack, with acceptance criteria in writing — delivered as a fixed-price PoC in 3–5 weeks.
Fixed-price PoC$8K–$15K · fixed scope · 3–5 weeks · you own the code
Most SMBs don't need an AI strategy.
They need one painful process, fixed.
01 / Services
Start with one process.
Prove it. Then expand.
AI Agent Builds
Agents that read, decide, and act inside guardrails you approve — with human review on every irreversible action.
RAG & Knowledge Systems
Your documents, policies, and past work turned into answers your team can trust — with sources cited, not hallucinated.
Discovery Sprint — $1,500
One week. We map the process, check your data, and tell you honestly whether a PoC makes sense. Credited toward the PoC if you proceed within 30 days.
02 / Delivery method
Five gates.
No surprises.
Every engagement passes through the same five gates. You can stop after any gate — and you'll know exactly what you got.
- 01
Diagnose
Define the business problem and kill criteria before touching any tool.
- 02
Data
Check what your data actually supports. Bad data kills more AI projects than bad models.
- 03
Validate
Build the PoC against written acceptance criteria — on your real data.
- 04
Deploy
Wire it into your stack with human-approval gates on real-world actions.
- 05
Accept
Stop/continue decision. You own the code either way.
03 / Who it's for
Built for companies
like yours.
10–500 people, US or EU, with one process that eats hours every week.
You want to know the price before the first sales call — not after the third.
You'd rather kill a bad idea for $10K than discover it after $100K.
Not for: enterprises needing 50-engineer teams, or anyone shopping for the cheapest quote on the internet.
04 / Who you'll work with
One person.
No handoffs.
Marshall — founder of Kunlun Growth. I spent years helping Chinese enterprises put AI into real business workflows — now I build fixed-price AI tools for American and European small businesses, one process at a time.
Every call, every line of code, every decision — direct. Agencies sell you a senior team and staff you with juniors. Here, the person who scopes your PoC is the person who builds it.
The tradeoff, stated plainly: one person means limited bandwidth — a small number of PoCs at a time. It also means nothing gets lost between sales and delivery.
05 / Pricing
Three tiers.
No "contact us".
Discovery Sprint — $1,500
One week. Process map, data check, honest go/no-go. Credited toward PoC within 30 days.
Details →PoC Build — $8K–$15K
One process, fixed scope, 3–5 weeks. Acceptance criteria in writing. You own the code.
Details →Production Rollout — from $25K
Hardened, integrated, monitored. Only after a PoC proved the idea.
Details →06 / Research
We publish our homework.
How much does an AI PoC cost in 2026?
60+ published vendor prices, methodology disclosed, median $8,900–$10,000. Updated October 2026.
Read the cost guide →12 best custom AI development companies for SMBs
Ranked on pricing transparency and SMB fit — including us, limitations disclosed.
Read the ranking →Custom AI tool development
What you get, how we compare to agencies and freelancers, and the full five-gate process.
How we work →Before you start
Bring one process.
Leave with a fixed quote.
30 minutes. We'll tell you which price band it falls in, what the fixed quote is — and whether a PoC even makes sense.
Book a discovery call → Business inquiries: marshall@kunlungrowth.com