The verdict in three sentences
In 2026, a business generative-AI integration costs between 10,000 and 40,000 EUR excl. tax, plus an API (token) cost of 100 to 800 EUR/month depending on volume. The safest gains are on customer support (-30 to -50% handling time), content writing and document summarization. The typical timeline is 8 to 12 weeks and ROI is calculated per use case, not globally: target the most time-consuming task first.
How much does an AI integration cost in 2026
Generative AI is no longer a pilot: it is a component integrated into your tools. Cost depends on integration level and the need for business knowledge (RAG over your documents).
| Integration level | Description | 2026 cost (EUR excl. tax) | Tokens/month |
|---|---|---|---|
| Simple assistant (prompt + API) | Writing, rephrasing | 10,000 - 16,000 | 100 - 300 EUR |
| Assistant connected to your data (RAG) | Answers over your docs | 18,000 - 28,000 | 300 - 600 EUR |
| AI workflow automation | Sorting, extraction, routing | 24,000 - 35,000 | 400 - 700 EUR |
| Full business agent | Multi-step + actions | 30,000 - 40,000 | 500 - 800 EUR |
Plan maintenance of 200 to 700 EUR excl. tax/month (model updates, prompt tuning, quality monitoring).
Use cases and ROI per use
The secret of a profitable AI project: don't aim for "AI everywhere" but a precise use with a measurable gain. Here are the 2026 orders of magnitude.
| Use case | Main gain | 2026 cost (EUR excl. tax) | Estimated ROI |
|---|---|---|---|
| Customer support (deflection + drafts) | -30 to -50% time | 18,000 - 28,000 | 6-10 months |
| Marketing / product writing | 3x content volume | 10,000 - 16,000 | 4-8 months |
| Document summarization / watch | -60% reading time | 12,000 - 20,000 | 7-11 months |
| Data extraction (invoices, contracts) | -70% entry | 20,000 - 30,000 | 8-12 months |
| Internal sales assistant | +15% response rate | 24,000 - 35,000 | 9-14 months |
Mini case study
Sophie, director of an e-commerce SME in Nantes (35 employees), receives 1,200 support e-mails per month. Three agents spend 160 hours/month in total, loaded cost 32 EUR/hour = 5,120 EUR/month.
She deploys an AI assistant connected to her knowledge base (RAG) for 24,000 EUR excl. tax, tokens 450 EUR/month, maintenance 400 EUR/month. The AI drafts replies and resolves 40% of simple requests alone: handling time drops 40%, i.e. 64 hours/month freed = 2,048 EUR/month. Monthly solution cost: 850 EUR. Net monthly gain: 1,198 EUR. ROI on the initial investment: about 12 months, after which the team absorbs growth without hiring.
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FAQ
Which AI use case is the most profitable in 2026?
Customer support: deflection of 40 to 65% of simple requests and -30 to -50% handling time, for 18,000 to 28,000 EUR, ROI in 6 to 10 months.
How much do API tokens cost?
From 100 to 800 EUR/month depending on volume. A mid-support SME runs around 300 to 600 EUR/month, a cost that keeps falling with new models.
Do I need my own data for AI?
For reliable answers about your business, yes: the RAG approach connects the AI to your documents. That is what separates a generic assistant (10,000 EUR) from a business assistant (18,000 to 28,000 EUR).
Is generative AI reliable for professional use?
With proper framing (RAG, guardrails, human validation on sensitive cases), yes. We measure a 40 to 65% automatic resolution rate on support, the rest going to human review.
How long to deploy?
A simple assistant ships in 4 to 6 weeks. A business assistant connected to your data takes 8 to 12 weeks, integration and testing included.
Let's scope your project. Tell us your team's most time-consuming task and its monthly volume, and we will price the AI use case with the best ROI. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
