ChatGPT Enterprise vs Microsoft Copilot: SME Rollout Cost and Choice in 2026

The verdict in three sentences

For a 120-employee SME, the choice between Microsoft Copilot and ChatGPT Team or Enterprise depends first on your environment: if your documents live in Outlook, Teams and SharePoint, Copilot uses that context, otherwise ChatGPT often offers better value. Licences run around EUR 28 or USD 25 to 60 per user per month, but the item that makes the difference is rollout support, at EUR 5,000 to 15,000 excl. VAT. Without a policy or training, real adoption often stays below 30%, which means paying for three licences to use one.

The two offers compared, 2026 figures

Both solutions contractually guarantee, in their business plans, that your data is not used to train public models. They differ on integration, permissions management and pricing. The prices below are 2026 orders of magnitude, excluding tax, and may vary with annual commitments and resellers.

One often underestimated point: Copilot respects SharePoint access rights. If your sharing is misconfigured, a salesperson could query the AI about HR files they would never have opened. A permissions audit therefore comes before any serious Copilot rollout.

The real cost of a successful rollout

The full budget is not just licences. You need an AI usage policy (allowed data, human review, content ownership), a selection of use cases per department, short repeated training sessions, and a pilot before scaling.

Good practice is not to buy 120 licences at once. A pilot with 20 to 30 users over two months measures the time saved, then extends to the profiles that truly benefit: sales staff, executive assistants, lawyers, financial controllers, communications officers.

Mini case study

Nathalie, CEO of a 120-employee services SME in Nantes, compares two scenarios. Giving everyone Copilot would cost 120 × EUR 28 × 12 = EUR 40,320 excl. VAT a year. At 30% real adoption, only 36 licences are really used: EUR 28,224 a year goes to idle licences.

She opts instead for a 25-user pilot, EUR 9,000 excl. VAT of support and a gradual extension to 60 targeted users. Licences: 60 × EUR 28 × 12 = EUR 20,160 a year. With 75% adoption and a measured gain of 2 hours per week per active user, valued at EUR 35 an hour, she gets 45 users × 2 h × 45 weeks × EUR 35 = EUR 141,750 of freed time a year, for EUR 29,160 spent in year one.

FAQ

Copilot or ChatGPT: which is safer for our data?

Both business offers exclude training on your data and encrypt exchanges. The difference comes mainly from your settings: a poorly shared SharePoint exposes more risk with Copilot than ChatGPT Team without connectors.

Should every employee be equipped?

Rarely. In a 120-person SME, 40 to 60% of roles gain measurably, and a 20 to 30-user pilot is enough to identify which ones.

How long does a rollout take?

Allow 6 to 10 weeks: 2 weeks of audit and policy, 4 to 6 weeks of pilot, then 2 weeks of scaling. Training runs in groups of 10 to 15 people.

Can we use both tools?

Yes, for example Copilot for Microsoft-heavy admin teams and ChatGPT Team for marketing. Admin effort rises by 15 to 25% and the policy must cover both.

How do we measure return on investment?

Track weekly usage per licence and self-reported time saved on 3 to 5 typical tasks. A licence used no more than twice a week after 60 days should be reassigned.

Let's scope your project. Tell us your headcount, your office suite and the departments involved: we will scope a pilot, an indicative support budget between EUR 5,000 and 15,000 excl. VAT and a 6 to 10-week schedule. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.