Free access
0 €
Discover our method and explore the public corpus.
- Public dossiers
- Atlas and basic search
- Public visualisations
- Free trajectory comparator
- 3 AI questions / month with an account
An open publication.
Tools worth supporting.
An essential part of the corpus — including the public trajectory comparator — remains accessible to everyone. Subscriptions fund member-only dossiers, advanced documentary research, enriched visualisations and the most resource-intensive AI uses.
Member
€69 / year
Save €13.80≈ €5.75/month · €1.33/week
Access Member dossiers and the main advanced documentary tools.
- Member-labelled dossiers
- Detailed sources and advanced filters
- Enriched maps and visualisations
- Member-only comparative dossiers
- 100 AI questions / month
Supporter
€120 / year
Save €24≈ €10/month · €2.31/week
Unlock every access level and support Historic Prism for the long term with a larger AI allowance.
- Everything in Member
- Supporter-labelled dossiers and content
- 300 AI questions / month
- Stronger contribution to independent production
Institutions & organisations
Request an offerAccess designed for teams.
Universities, libraries, media organisations, NGOs, research centres and other institutions can request multi-user access and adapted billing.