Why don’t you publish rates?

Because a rate says little about what a project costs — efficiency, team shape and scope matter more. We give a range after a short call and a fixed price for discovery, so you can compare real numbers.

Can you do a fixed price for the whole project?

For well-defined scope, yes — often after a discovery sprint. For evolving products, milestone pricing with change requests is fairer to both sides. See Fixed price vs T&M vs milestones.

Do we pay for the proof of concept if it shows the idea doesn’t work?

Yes — that answer is the deliverable, and it’s far cheaper than discovering it after a full build. You get a written report of what was tested and why.

Is there a minimum engagement?

The smallest engagement is a discovery sprint. For dedicated teams, we agree on a minimum period together so onboarding is worth it for you.

Nythrex · Pricing

No surprise invoices. Ever.

We don’t publish a price list, because an honest price depends on scope, data and integrations we haven’t seen yet. What we do publish is how pricing works: what’s fixed, what’s flexible, how changes are handled, and what you can see at any moment.

01
Intro call
Free · 30–45 min
02
Discovery sprint
Fixed scope & price
03
Proof of concept
Time-boxed · for risky ideas
04
Build
Milestone-based
05
Operate & grow
Monthly

Each step can be the last one. You never commit to more than the next step requires.

Engagement models

	Discovery sprint	End-to-end development	Dedicated team
Best for	Uncertain scope or a technically risky idea	Building a product through to production	Extending your own engineering team
Pricing	Fixed scope, fixed price	Per milestone, estimated up front	Monthly per team member
You get	Architecture, risks, estimate, technical plan	Design, engineering, cloud, QA, launch	Engineers working in your process
Changes	Scope agreed before start	Change requests with cost and time impact	Re-prioritise any time
Visibility	Written deliverables	Client Portal: progress, budget, risks, decisions	Your tools plus a monthly report

What determines the price

Scope

The number of user flows, roles and platforms — and how ruthlessly the first release is scoped.

Integrations

Every external system (ERP, CRM, payments, identity) adds design, build, testing and failure handling.

Data

For AI work especially: the number, quality and structure of data sources.

Quality bar

Compliance, security requirements, performance targets and uptime expectations.

Team shape

Which roles are needed and for how long — design, backend, frontend, mobile, AI, DevOps, QA.

Timeline pressure

A fixed launch date may require a larger team in parallel, which costs more than a steady pace.

For an orientation on effort before we talk, try the AI project effort estimator, and read what AI development really costs.

How changes are handled

1
You ask for a change
In a call, a message or the Client Portal — any way that’s convenient.
2
We estimate it
A change request states what changes, the extra cost (or saving), and the schedule impact — usually within a couple of business days.
3
You decide
Approve it, move it to the backlog, or drop it. Nothing is implemented until you approve.
4
Budget and forecast update
Approved changes appear in the budget and forecast immediately, so the numbers you see are always current.

Always included

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Frequently asked questions

GuideFixed price vs T&M vs milestonesWhich contract model protects you? Fixed price, time & materials and milestones compared on risk, flexibility, incentives and hidden costs.GuideHow change requests double budgetsScope creep arrives as dozens of small “quick” changes. How to run change requests that keep budgets honest without slowing the project down.GuideWhat AI development really costsWhat drives AI project cost — the model is the cheap part. Effort by phase, hidden costs vendors skip, running costs and how to budget safely.Free toolAI project effort estimatorFree AI project calculator: six questions → timeline, team, effort in person-weeks and the main cost drivers of your AI project. No signup.NythrexHow we workThe Nythrex delivery model: five phases, working demos, forecast ranges, priced change requests, early risks and client ownership of code and cloud.

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