Case Studies
See how enterprises build custom AI models that outperform frontier APIs — with higher accuracy, lower cost, and full data control.
Top-5 U.S. Bank · 100M Lines of Legacy Code
Custom AI for the institutions that can't afford to get it wrong. Frontier models failed 50% of code translation tests. A top-5 U.S. bank is modernizing 100 million lines of legacy code. Open-source models delivered 85% of Sonnet 4.6's quality on codebase comprehension — no proprietary code ever left the bank's environment.
“It's pretty powerful if I can take that model… when I deploy it to production, that data's not going anywhere. The cost and deployment model you guys offer is kind of ideal for an enterprise.”
— Head of Modernization Architecture
Healthcare Provider · 80+ Models
20% higher quality. 70% lower cost. — permanently replacing frontier LLM APIs. A custom vision model extracts structured patient data from medical records in real-time across 30 practices and 3 systems, scaling to 80+. $2.3M in annual savings. GPT and Claude delivered inconsistent results on specialized formats.
“We spent three months trying to fine-tune internally — the infrastructure was quickly obsolete. With Oumi, the same team ships production models in minutes. We've permanently migrated away from LLM APIs.”
— ML Engineering Lead
Facilities Management Company · 400+ Service Types
Thousands of work orders daily. 400+ service types. A single specialized model replacing a multi-model pipeline that took 30 seconds to 5 minutes per work order — targeting sub-second on-device response. Accuracy on work order validity and appropriateness both improved significantly over a frontier model baseline.
“Every job we handle is bespoke — even the same HVAC unit breaking down twice runs differently. I'm convinced our future is to have our own fine-tuned models. The results have only gotten better.”
— Chief Product & Technology Officer
National Insurer · 100× Cost Reduction
100× cost reduction on high-volume claims triage. $0.10 per classification. Not $10. Custom models trained on your policy schema learn the specific rules, formats, and edge cases your claims require — consistency that frontier APIs can't match at this price.
“We can't keep paying $10 per human review on claims that a custom model classifies for pennies. The accuracy has to be near deterministic — our policy rules don't change based on what the model ate for breakfast.”
— Claims Operations Lead
Global Gaming Company · 26 Markets, 20+ Languages
Specialized small models 26 markets. 20+ languages replacing frontier APIs for real-time sports interactions — from natural-language-to-query on structured databases to multilingual agentic agents running worldwide. Production-ready model. Lower cost. Lower latency.
“Oumi's synthesis recipes took us from schema to 500 training samples in just a few iterations. Controlling data distribution was simple, and evolving from basic to complex queries required only small config changes.”
— Data Science Team Lead
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