Didomi vs OneTrust: which platform to choose in 2026?

Two quote-based heavyweights on different ground. Didomi is a French CMP centred on consent and the advertising chain, with the IAB TCF framework as its pillar and hosting inside the European Union. OneTrust is a US compliance governance suite where the cookie banner sits alongside records of processing, impact assessments and vendor risk.

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Scope first, price second

Neither vendor publishes pricing. Public estimates put Didomi entry around €250 per month on monthly unique visitors, while software purchasing aggregators put median OneTrust spend in the five-figure range per year, with implementation fees on top. The gap mostly reflects scope, not banner quality.

If your actual need is a compliant cookie banner, neither platform is sized for you. ConsentLab covers that scope from €0 with 5,000 sessions per month, unlimited domains, native Google Consent Mode v2 and data hosted in France.

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