The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2026
Filed:
Aug. 28, 2025
Citibank, N.a., New York, NY (US);
Ganesh Prasad Bhat, New Jersey, NY (US);
Zheyu Wang, Shanghai, CN;
Haolin Jin, Shanghai, CN;
Sourabh Deb, Tampa, FL (US);
Jason Ryan Engelbrecht, London, GB;
Payal Jain, London, GB;
Tariq Husayn Maonah, London, GB;
Mariusz Saternus, Cracow, PL;
Daniel Lewandowski, Cracow, PL;
Biraj Krushna Rath, London, GB;
Stuart Murray, London, GB;
Philip Davies, London, GB;
Julisia Jackson, Irving, TX (US);
Chamindra Desilva, London, GB;
Shardul Malviya, London, GB;
Wayne Liao, London, GB;
Deepak Jain, London, GB;
Samantha Cory, London, GB;
Vishal Mysore, Mississauga, CA;
Ramkumar Ayyadurai, Jersey City, NJ (US);
James Myers, Clearwater, FL (US);
Citibank, N.A., New York, NY (US);
Abstract
Systems for explainable large language model routing with immutable audit trails are disclosed. The system receives a query and determines its characteristics including complexity, domain, regulatory constraints, and performance requirements. It retrieves profiles for multiple LLMs from a model matrix containing performance attributes, resource consumption, and compliance parameters. The system selects a particular LLM by balancing resource consumption with performance requirements, evaluating regulatory compliance, ranking LLMs based on these factors, and prioritizing models with successful processing history. The system generates a human-readable explanation of the selection including decision factors, rationale, and alternatives considered. Finally, it records the selection and explanation in a tamper-evident, immutable audit trail data structure.