You have decided your business needs AI. Good. The technology is ready. The use cases are proven.
Now comes the hard part: picking who builds it.
The AI implementation market in 2026 is crowded. Some agencies are excellent. Some will take your EUR 30,000, deliver a demo that barely works, and disappear. Here is a 12-point checklist based on patterns we have seen across hundreds of AI projects in Europe.
The 12-Point Checklist
1. Do They Build or Do They Resell?
Ask: "Is the solution custom-built, or a white-labeled version of someone else's platform?"
Many "AI agencies" are resellers. They take an existing platform, put your logo on it, and charge a markup. Works for generic cases. Falls apart the moment you need something specific.
Green flag: They write code and deploy on infrastructure they control.
Red flag: The demo looks identical for every client.
2. Can They Show a Prototype on Your Data in 7 Days?
Ask: "If I send you sample data, can you show me something working in a week?"
This is the single most important filter. Agencies that deliver in 7 days have done this before. Agencies that need "4-6 weeks for discovery" are building capability on your dime.
Green flag: "Send us data. We'll have it running by Friday."
Red flag: "We need a comprehensive requirements workshop first."
3. Who Owns the Code?
Ask: "Do we own 100% of the source code? Can we take it to another vendor?"
If the agency owns the code, you are renting a solution they can reprice at any time.
Green flag: Full code ownership. Runs on standard infrastructure. Any developer can maintain it.
Red flag: "The code is our IP, but you get a perpetual license."
4. Fixed Price or Time-and-Materials?
Ask: "Is the price fixed? What is included? What costs extra?"
Time-and-materials means the agency has no incentive to be efficient. Every extra meeting is billable. Fixed pricing aligns incentives.
Green flag: Fixed price. Clear scope. Change requests quoted before work begins.
Red flag: "We estimate 400-600 hours at EUR 120/hour."
5. Where Does Your Data Live?
Ask: "Where is data hosted? Which country? Is any data used to train AI models?"
For European businesses, GDPR compliance is not optional. If your vendor hosts outside the EU or uses your data to train models, you have a problem.
Green flag: EU hosting. Data processing agreement. No training on client data.
Red flag: "We use the OpenAI API" with no explanation of data handling.
6. Industry Track Record?
Ask: "Have you built something similar for a company like ours? Can we talk to that client?"
An agency that builds chatbots for e-commerce may struggle with healthcare compliance. Industry experience matters.
Green flag: Specific case studies in your industry. References you can call.
Red flag: "We have experience across all industries."
7. Post-Launch Support?
Ask: "After launch, who monitors the system? What does ongoing support cost?"
AI systems need monitoring, retraining, and adjustment. An agency that builds and walks away leaves you with a system that degrades.
Green flag: Monthly support with defined SLAs and proactive monitoring.
Red flag: "We offer ad-hoc support at our hourly rate."
8. How Do They Handle Failure?
Ask: "What if the AI does not perform as expected?"
Every AI project carries performance risk. What matters is how the agency responds.
Green flag: Defined KPIs before launch. Clear iteration process. Willingness to discuss past failures.
Red flag: "Our solutions always meet expectations."
9. Business Problem or Technology?
Ask: "What business outcome will this deliver? How will we measure success?"
Good agencies start with your problem and work backward to technology. Bad ones start with technology and look for a problem.
Green flag: They ask about your KPIs and costs before discussing models.
Red flag: They lead with architecture diagrams and model names.
10. Who Actually Builds It?
Ask: "Will the people in this meeting be the ones doing the work?"
Common bait-and-switch: senior people sell, junior developers build. The quality gap is enormous.
Green flag: You meet the actual developers. Small, senior team.
Red flag: "We'll assign a team after contract signing."
11. How Long Until Production?
Ask: "How many weeks from signing to live?"
Standard AI agents (voicebot, chatbot, document AI) should take 2-6 weeks. If it takes 6 months, the agency has scope or process problems.
Green flag: "2-4 weeks for a voicebot. Here is the week-by-week plan."
Red flag: "It depends on the discovery phase."
12. Can You Exit Cleanly?
Ask: "If we stop working together, what is the transition process?"
Agencies confident in their work are not afraid of clients leaving.
Green flag: Full code handover, documentation, knowledge transfer.
Red flag: Exit fees, long contract terms, vague answers about ownership.
Red Flags Summary
- All talk, no demo. Cannot show something working in a week? Probably cannot build it in a month.
- Vague pricing. "It depends" is not a price.
- No references. No references means no happy clients.
- Technology-first. Talking about GPT-4 before asking about your business.
- Long timelines. 6 months for a chatbot is inefficiency, not thoroughness.
- Lock-in. Annual contracts, proprietary platforms, code you do not own.
How Syntalith Scores
1. Build or resell? Custom from scratch. No white-labeling.
2. 7-day prototype? Yes. Send data, get a working demo.
3. Code ownership? 100% yours. Deploy anywhere.
4. Pricing? Fixed price. Defined scope.
5. Data hosting? EU only (Frankfurt). No training on client data.
6. Industry track record? Healthcare, legal, e-commerce, real estate, manufacturing.
7. Post-launch? Monthly plans with SLAs.
8. Failure handling? Defined KPIs. Iterative improvement included.
9. Business-first? We start with your problem.
10. Team? Small. Senior. You meet who builds.
11. Timeline? 2-6 weeks.
12. Clean exit? Full handover, no lock-in.
Next Steps
1. Use this checklist to evaluate any AI agency you are considering
2. Book a discovery call with Syntalith (30 minutes, free) - see how we answer these questions for your project
3. Get a 7-day prototype on your data before committing
The right agency will not be offended by tough questions. They will welcome them.
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