The Brief: December 2025
Welcome back to The Brief. This month’s updates help you extract insights faster, access a broader range of legal sources, and streamline work across the platform.
Dec 9, 2025
Harvey Team
More Context, Deeper Insights
Get better answers to complex legal questions by drawing on more sources, stronger reasoning, and richer context.
Harvey Guide in Assistant
Ask Harvey how to use features, troubleshoot issues, or leverage best practices without needing to dig through documentation. Learn more.
@ Mention in Composer
Quickly reference relevant files or knowledge sources in your prompt by tagging them directly. Learn more.
Gyldendal Rettsdata
Query an expansive collection of Norwegian primary legal sources from Gyldendal Rettsdata — including laws, regulations, preparatory works, and court decisions — directly in Harvey. Learn more.
GPT-5.1 Now Available in Harvey
GPT-5.1 is now available in the model selector across Assistant, Vault, and Workflow Builder — delivering stronger reasoning, faster responses, and clearer outputs. Learn more.
New Local Knowledge Sources
Enable precise, jurisdiction-specific answers directly in Assistant with new legal knowledge sources for Belgium (Senate of Belgium, Hof van Cassatie), Ireland (Irish Statutes Book), Argentina (Boletín Oficial CABA), Finland (Oikeus), Luxembourg (Chambre des Députés), Colombia (Legislation, Constitutional Court Decisions). Learn more.
Upload Documents Alongside Ask LexisNexis®
Add documents as context to Ask LexisNexis® queries to strengthen primary law research from LexisNexis® Protégé and drafting from Harvey. Learn more.
Tables Inside Documents
Harvey can now read and reason over tables embedded in documents for more comprehensive analysis.
Upload Password-Protected Files
Unlock encrypted, password-protected files directly in Harvey, without needing to decrypt files externally and remove passwords in advance. Learn more.
Vault Naming Updates
To simplify and clarify our product terminology, we’re renaming “Vault projects” to “vaults.” Learn more.
Tailor Harvey to Your Work
Experience a more personalized Harvey, from recommendations surfaced to outputs generated.
Embed Vaults and Regional Knowledge Sources in Custom Workflows
Build and run workflows that pull directly from your vaults, files, and local legal sources to produce grounded, relevant outputs. Learn more.
Optional Steps in Custom Workflows
Make steps like file uploads or text inputs optional in workflows to streamline execution and use embedded context when available. Learn more.
Recommended Knowledge Sources
Receive tailored knowledge source suggestions based on your location.
Improved Output Localization
Get more relevant outputs tailored to your region, profession, and preferences, like British English or local legal terminology. Learn more.
That’s all for December. See you in the new year!