The verdict in three sentences
A COO of a Dubai enterprise who deploys an internal AI assistant (RAG) replaces 20 minutes of search per query with an instant answer and saves the support team 40 hours per month. LLM token cost is 3 to 15 EUR/1M tokens; a custom RAG project costs 25,000 to 60,000 EUR. ROI lands between 12 and 18 months, with 70% employee adoption.
LLM API cost or custom project: the 2026 comparison
The raw LLM API is not enough: a reliable assistant needs document indexing, guardrails and a business interface.
| Criterion | LLM API only | Custom RAG assistant project |
|---|---|---|
| Token cost | 3 to 15 EUR/1M tokens | included (variable usage) |
| Project cost | 0 (prototype) | 25,000 to 60,000 EUR |
| Hosting/vector store | to set up | included, 150 to 500 EUR/month |
| Timeline | a few days | 8 to 14 weeks |
| Connected sources | none | procedures, contracts, doc base |
| Guardrails and citations | to build | built in |
| Answer reliability | variable | controlled (RAG + sources) |
Measured gains on support and operations
A well-indexed assistant transforms internal information search.
| Metric | Before | After (2026 estimate) |
|---|---|---|
| Search time/query | 20 min | under 2 min |
| Support hours saved | 0 | 40 h/month |
| Employee adoption | n/a | 70% |
| Internal response delay | hours | seconds |
| Monthly token cost (avg usage) | n/a | 200 to 600 EUR |
| Answer consistency | variable | sourced and traced |
Mini case study
Julien, COO of a 400-employee enterprise in Dubai, finds his support team spends 40 h/month searching procedures and contracts. He invests 42,000 EUR in a custom RAG assistant, with 400 EUR/month of hosting and API. Result: search cut from 20 min to under 2 min per query, 40 h/month saved (~1,600 EUR), 70% adoption. The net monthly gain is around 1,200 EUR; the project pays back in 15 months, excluding quality and internal satisfaction gains.
FAQ
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How much do LLM tokens cost in 2026?
Between 3 and 15 EUR per million tokens depending on the model. For average internal use, the monthly bill lands between 200 and 600 EUR.
What budget for a custom internal AI assistant?
Expect 25,000 to 60,000 EUR for a RAG project including indexing, guardrails and an interface, with an 8 to 14 week timeline.
What is RAG and why does it matter?
RAG (retrieval-augmented generation) grounds the AI's answers in your real documents, which reduces hallucinations and lets it cite sources.
How much time does an internal assistant save?
Around 40 hours per month for a support team, by replacing 20 minutes of search per query with a near-instant answer.
How long until it pays back?
Between 12 and 18 months depending on team size and internal query volume. High adoption speeds up the return.
Let's scope your project. Describe your document base and internal use cases: we'll price a custom RAG AI assistant with guardrails. 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.
