The verdict in three sentences
A custom AI lead scoring and qualification tool for B2B — scoring model plus CRM integration — costs between EUR 10,000 and EUR 35,000 in 2026, for a 4 to 8 week timeline. The concrete gain is a sales conversion rate improved by 10 to 25 % and a lower cost per qualified lead. A CRM's native scoring is quickly available but stays rudimentary against a model trained on your real conversion signals.
Native CRM scoring or bespoke model: what differs
Native scoring (point rules in the CRM) is simple but static: it weights criteria by hand without learning from past conversions. Bespoke trains a model on your history, integrates external signals and recalibrates as sales reps qualify.
| Criterion | Native CRM scoring | Bespoke model |
|---|---|---|
| Upfront cost | Included - EUR 3,000 | EUR 10,000 - 35,000 |
| Monthly cost | Included in licence | API + EUR 300 - 800 maintenance |
| Score basis | Manual rules | Model trained on conversions |
| Signals used | 3 - 8 criteria | 20 - 60 signals |
| Automatic recalibration | No | Yes (retraining) |
| Conversion uplift | 2 - 8 % | 10 - 25 % |
| Time to launch | 1 week | 4 - 8 weeks |
Budget and schedule breakdown
The price depends on the quality of your CRM history, the number of signals to use and the level of automation (routing hot leads to sales reps). Basic scoring is faster than an engine that prioritises and distributes automatically.
| Line item | 2026 range (EUR) | Indicative timeline |
|---|---|---|
| Scoping + CRM audit | 1,500 - 4,000 | 1 week |
| Scoring model + training | 4,000 - 14,000 | 2 - 3 weeks |
| CRM integration + routing | 3,000 - 12,000 | 1 - 2 weeks |
| Dashboard + monitoring | 1,000 - 5,000 | 1 week |
| Testing, calibration, training | 500 - 4,000 | 1 week |
| Total | 10,000 - 35,000 | 4 - 8 weeks |
Model quality depends on a history of at least 500 to 1,000 labelled converted/lost leads. With lower volume, you start on hybrid rules while data accumulates.
Mini case study
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Sophie, marketing director of a B2B software vendor in Berlin, generates 900 leads/month that sales reps handle as they come. She invests EUR 24,000 in a bespoke model, with EUR 500/month maintenance.
Scoring prioritises hot leads and lifts the conversion rate from 4 % to 5 %, i.e. +25 %. On 900 leads at an average deal of EUR 6,000, that extra point generates 9 more won leads per month, i.e. EUR 54,000/month in additional revenue. The investment is paid back in under 3 weeks.
FAQ
How much lead history is needed? Ideally 500 to 1,000 labelled leads (converted/lost). Below that, you start with hybrid scoring until enough examples accumulate.
What realistic conversion gain? Between 10 and 25 % relative uplift depending on data quality and sales discipline. The gain mostly comes from prioritising hot leads.
Does it integrate with my existing CRM? Yes, CRM integration (Salesforce, HubSpot, Pipedrive and others) is part of the scope. The score and routing appear directly in the sales reps' tool.
How long to deploy? Expect 4 to 8 weeks depending on history quality and the desired level of routing automation.
What maintenance budget? Between EUR 300 and 800/month to retrain the model and monitor accuracy. Without recalibration, the score drifts as your market evolves.
Let's scope your project. Tell us your CRM, your monthly lead volume and your available history, and we will price a profitable scoring model. 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.
