From 'How do we build this?'
to live product in 5 weeks.

Ship AI-powered products and internal tools in 5 weeks. Fixed price, fixed brief, and 100% code ownership.

Scope your AI product

A working product.Not a prototype. Not a proof of concept.

When the engagement ends, you receive a product in production tested, documented, and fully owned by you. Not a staging environment. Not a demo with a footnote. Something that runs.

5 weeks
From scoping call to live product
Fixed.
Price locked before a line of code is written
100%
Code ownership yours, forever
No commitment until you've approved every line of the brief.

Three paths.

One way we work.

Internal Tools

You know exactly which task is eating your team's time.

Let's kill it.

Before · Manual workflow
Intake
Review
Format
Export
4+ hrs/wk
FRACTIONAL BUILD
After · Automated
Auto-run
Always on
~0 hrs/wk
You have a repeated manual workflow
Your team runs it weekly or monthly
You want it automated not just faster
Right for
SME ownersOps-heavy teamsBusinesses at scale
AI Features

You already have users. You need your product to do more.

AI without rebuilding.

You have a live product with real users
You want AI capabilities added not bolted on
You need it fast without a full rebuild
Right for
Product teamsGrowth-stage startupsExisting SaaS
Standalone AI SaaS

You have the idea. You don't have the team to build it.

0-to-1 execution.

You have a validated idea
No in-house tech team
You need a product not a prototype
Right for
Founders0-to-1 buildersNo tech team yet

Three phases.

Everything in writing.

Nothing gets built until you've approved it. You see every step, approve every brief, and own every line of code.

PHASE 01
Define
Week 1 · Free
FreeNo commitmentIn writing

We write it all down.

The 30-minute call is how we start not how we finish.

In that call, we establish whether the problem is real and whether we're the right team for it. You'll know by the end. If the answer is yes, here's what the rest of Week 1 looks like:

Day 1
The call. We learn the workflow, the pain, and the people involved including the ones who'll actually use the product day-to-day, not just the person buying it.
Within 24h
You receive a one-page outline a rough shape of what the product looks like, before either of us commits to anything.
Days 2–4
We go deeper. Map edge cases, pin down what's in and out, and ask every question we'd regret not asking. No assumptions carried forward.
Days 5–7
The written build brief arrives every feature defined, every cost broken down, your delivery date confirmed. In writing. Before any money changes hands.
Phase 1 costs nothing.
You owe us nothing until you've seen the build brief and agreed to every line of it. You don't approve it we part ways. No invoice. No awkward follow-up.
Deliverable|Written Build Brief
build-brief.pdf
Build Brief Recruitment Automation Tool
Scope confirmed
Auto-format engine
Webhook trigger
Export to ATS
FIXED COST
€ locked
SHIPS BY
Wk 5
STATUS
Approved
PHASE 02
Build
Weeks 2–5 · Fixed price
Fixed priceWeekly check-insNo surprises

Exactly to spec.

A team of two or three. Never more.

We build exactly what the brief describes. Weekly check-ins, not weekly surprises. If something outside the brief comes up, a new written agreement is required before a single hour is spent on it. No exceptions.

Our accuracy
If we got something wrong in the brief that's on us to fix at our cost, not yours. The agencies you've dealt with before blamed overruns on you. We own our accuracy.
Scope creep
Every change requires a written addendum. Nothing gets added to your invoice without a new agreement from you first. The brief is the contract.
Weekly check-ins
You see the product take shape in real time. No black-box development. No surprises on delivery day.
Deliverable|Fully Built & Tested Product
wk3-checkin.log
Build progress
Core logic100%
Integrations100%
Tests72%
FB
feat: auto-format engine complete
7db4e81
FB
feat: webhook trigger + retry
c1a2f55
FB
chore: tests + documentation pass
9e0b3dc
pending
PHASE 03
Ship
Week 5–6
100% yours30-day supportZero lock-in

You own it all.

Everything. Completely. Forever.

We deploy to production and hand over the complete package. Your team can run it on day one and any developer you hire in the future can understand it without ever talking to us.

Codebase
The complete repository, fully documented. Clean code, not a patch job. Built so the next developer doesn't need us to translate it.
Infrastructure
All environment variables, hosting credentials, third-party service keys. Everything required to run the product, handed over cleanly.
Walkthrough
A 30-minute documented session recorded and written so your team knows exactly how it works and how to maintain it.
30 days
We stay available for 30 days post-launch. After that, you need nothing from us to keep the lights on. That's the point.
100% code ownership.
No lock-in. No ongoing dependency on us. No retainer to keep the lights on.
Deliverable|Live in Production
deployment.status
https://app.yourclient.com
LIVE
Production deployLive
Repository accessTransferred
Env credentialsHanded over
Recorded walkthroughDelivered
30-day support window active we're here if you need us.

From founders who've been

exactly where you are.

Ankit Kochar
Ankit Kochar

Fractional Build has been a game-changer for our recruitment process. What used to take our team hours now runs in minutes resume formatting that used to pile up across the week ships automatically, the same day. Their professionalism, technical expertise, and attention to detail have truly elevated our platform.

Alex Berman
Alex Berman

Their willingness to adjust and their responsiveness added value along the way. The tool they built freed up time my team was spending manually hours we've redirected to work that actually matters. I would recommend them for anyone looking for a team committed to delivering results.

Alex Young
Alex Young

Their expertise and dedication in the field of artificial intelligence truly stood out throughout the project. We highly recommend Fractional Build to anyone looking for a skilled and forward-thinking AI development partner.

Tools we actually use.

Nothing exotic. Nothing new.

Every product we ship is built on a modern, battle-tested AI stack so you're never locked into something no one else can maintain.

AI & Reasoning Layer
OpenAI
LLM backbone
Claude
Reasoning & long-context
LangGraph
LangGraph
Agent orchestration
PydanticAI
Pydantic
Data validation & schemas
Next.js
Full-stack web framework
Product & Build Layer
Figma
UI design & prototyping
Bubble
No-code Full Stack
Linear
Task & sprint tracking
Supabase
Database & auth layer

The questions your last

vendor never answered honestly.

Because the structure is different. You don't pay for the build until you've approved a written brief that defines exactly what you're paying for. Each phase is approved before the next one begins. There is no scenario where you've paid for everything and received nothing. The brief isn't a formality it's your protection. No brief approved, no payment. No payment, no start.

Ready to stop explaining it
to people who don't get it?

Tell us what you want to build. We'll tell you whether we can build it, what it'll cost, and when it ships in one 30-minute call. If it's not the right fit, we'll tell you that too. Either way, you leave with something useful.

Scope your AI product free 30 min
Three questions. Thirty minutes. A written build plan in your inbox within 24 hours. No commitment until you've approved every line.