2024
Posta Kopilot
20%+ Efficiency Gains on 2.1 Million Mail Pieces a Day
Our roleProduct management, design, backend and frontend development, AI model training and implementation
2.1M+mail pieces daily
20%+efficiency gains
99%+classification accuracy
months → weeksnew sorter onboarding
Pošta Srbije is Serbia's national postal service. LambdaWorks deployed an AI copilot across its robotized sorting centers in Belgrade (2,500 parcels/hour), Niš, Novi Sad, and Kraljevo - processing 2.1M+ mail pieces daily. The system delivered 20%+ efficiency gains, 99%+ classification accuracy, and cut new sorter onboarding from months to weeks.
The bottleneck
Manual classification at scaleWith 2.1 million pieces moving through daily, small inefficiencies compounded into hours of lost throughput.
High training costNew employees took months to learn classification patterns - recognizing handwriting variations, understanding routing rules, making decisions experienced sorters handled instinctively.
Augment, don't replace
The design principle was augmentation: the AI handles routine classification automatically and flags edge cases for human review. Experienced sorters focus on decisions that actually require judgment.
The model learned from expert sorters: classification patterns across handwritten, printed, and hybrid addresses. Workflow prioritization to maximize throughput. Error patterns to identify ambiguous pieces. Routing rules specific to each sorting center's configuration.
The results
20%+ efficiency gains across mail sorting operations. 99%+ accuracy on automated mail classification. Onboarding time: months → weeks for new sorting staff. Scale: 2.1M+ pieces processed daily across national infrastructure.
Public sector, production results
GovTech AI is harder than enterprise AI - the infrastructure is older, the stakes are higher, and the definition of success is narrower. Posta Kopilot proved that modern AI can be deployed inside government operations at national scale, delivering measurable results without disrupting the workforce it augments.