Comparison · AI strategy

Off-the-shelf vertical SaaS or custom AI agent

Subscribe to a ready-made AI software for your industry, or build an agent around your specific process. What works for an SME.

Daniel Levis· Published 17 September 2026

In brief

For most SMEs a ready vertical SaaS is the smart pick when the process is standard and you want results in days at a low subscription. A custom AI agent pays off when the process is a competitive edge, data is sensitive, or no SaaS covers the real flow: it costs more upfront but kills the perpetual fee and leaves you the code. The right question is how far your process diverges from the market standard.

Option A

Off-the-shelf vertical SaaS (subscription)

An AI software already built for your industry, with ready features and a recurring fee. You adapt to its logic.

Pros

  • +Live in days, not weeks: no upfront build
  • +Low, predictable entry cost (monthly or annual subscription)
  • +Maintenance, updates and security handled by the vendor
  • +Industry best practices already baked into the product

Cons

  • You adapt to the software, not the other way around: non-standard steps stay uncovered
  • A recurring fee that never ends and grows with users and volume
  • Lock-in: data and logic live inside the vendor, migrating is costly
  • Roadmap set by the vendor, not by your priorities

Best for

  • Standard, common processes in the sector (e.g. B2B trade shows with Linkly)
  • SMEs that want to validate fast without a high upfront spend
  • Teams with no competitive edge to protect in that flow

Option B

Custom AI agent

An agent built around your real process, in your language and your systems, whose code you own.

Pros

  • +Fits your exact process, including the exceptions a SaaS ignores
  • +Client owns the code from day one, no lock-in and no perpetual fee
  • +Data in-house or on European infrastructure, useful for GDPR/AI Act
  • +Integrates with your existing systems without forcing a new standard

Cons

  • Higher upfront cost
  • Needs an internal owner to follow build and maintenance
  • Time to first result is weeks, not days
  • Evolutions and updates stay your responsibility over time

Best for

  • Core processes that are a competitive advantage
  • Sensitive data or strict compliance requirements
  • Flows that no market SaaS truly covers
Criterion Off-the-shelf vertical SaaS (subscription) Custom AI agent
Time to first result Days (activation) 4 weeks (first delivery)
Entry cost Low (e.g. Linkly at linkly.events) From €3,000/month
Cost over time Perpetual recurring fee From €3,000/month
Process fit Your process adapts to the software The software adapts to your process
Ownership and data Inside the vendor (lock-in) Client owns code and data
Maintenance Included in the fee On you after hypercare

The verdict

This isn't an ideological choice, it depends on how far your process diverges from the standard. If the flow is common in your sector and you want results now with low risk, a ready vertical SaaS is often the rational pick: you pay little, go live in days, maintenance isn't your problem. But if that process is a competitive advantage, the data is sensitive, or no SaaS covers your exceptions, the custom agent pays back: more upfront, but it kills the perpetual fee and leaves you code and control. Many SMEs do well to start with SaaS where the process is standard and build custom only where the process is genuinely their own.

FAQ

What people usually ask us.

Isn't a vertical SaaS always cheaper than a custom agent?
At entry almost always, but the real comparison is total cost over 2-3 years. A recurring fee that grows with users and volume can exceed the upfront sprint for an agent whose code you then own. The rule: SaaS where the process is standard and stable, custom where it is core and set to grow. We break it down in our post custom software or SaaS.
Can I combine the two paths?
Yes, and it's often the best move. You use a vertical SaaS like Linkly where the process is standard, and build a custom agent only on the flow that sets you apart. It doesn't have to be all or nothing.
With a custom agent, am I left alone with the maintenance?
No. The code is yours from day one, documented and maintainable, and we include 30 days of hypercare after go-live. You can keep a retainer with us, bring it in-house, or move to another vendor: no lock-in, unlike a SaaS.
How do I tell if my process is standard enough for a SaaS?
If an industry software covers your flow without forcing constant exceptions, it's standard: take the SaaS. If you end up working outside the tool to handle real cases, the process is yours and it deserves a custom agent. In an Assessment we put in writing which of the two paths fits your case.

Not sure which one fits your case?

20 minutes with the CEO to work out the right choice for your processes. No pitch, no obligation.

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