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The Right Model Beats
The Biggest Model

Build and deploy custom models from a prompt in hours

Build Your ModelUp to $50 in free credits Contact Us

Used by developers at leading organizations

Your Model, Not Theirs

Stop renting intelligence. Build & deploy custom models that are higher quality, more cost efficient, and faster than GPT-5.4 on your tasks.

50%Higher Accuracy

10×Lower Cost

10×Lower Latency

Oumi AI

Own Your AI

Your models, your data, your infrastructure — run anywhere

Own the weights, run anywhere, own your destiny. Oumi creates models you fully own and control.

Future-Proof Your AI

New model releases make you stronger — not obsolete

Always have a small custom model in a few hours that is better than the best frontier model for your tasks.

How it works

Four Steps to Production

The AI-native Custom Model Development Platform that automates the entire model development lifecycle

01/Evaluate

Measure how your model performs

Evaluators score model outputs against defined criteria so you can pinpoint weaknesses before and after training. Describe your task and get comprehensive test sets, recommended metrics, and ready-to-run evaluators, all generated automatically. Full visibility into results helps you decide where to focus next.

Evaluate: Measure how your model performs - Evaluators score model outputs against defined criteria so you can pinpoint weaknesses before and after training. Describe your task and get comprehensive test sets, recommended metrics, and ready-to-run evaluators, all generated automatically. Full visibility into results helps you decide where to focus next.

02/Synthesize

Generate targeted training data

Once weaknesses are identified, Oumi automatically synthesizes high-quality training examples targeting those failure modes, removing the need for manual curation or labeling. You review and refine data before it's used, so you stay in control.

Synthesize: Generate targeted training data - Once weaknesses are identified, Oumi automatically synthesizes high-quality training examples targeting those failure modes, removing the need for manual curation or labeling. You review and refine data before it's used, so you stay in control.

03/Train

Improve your model with fine-tuning

Train using the best approach for your use case, with support for full fine-tuning, parameter-efficient fine-tuning, and on-policy distillation. Oumi trains on your data and automatically re-evaluates results so you can measure improvement.

Train: Improve your model with fine-tuning - Train using the best approach for your use case, with support for full fine-tuning, parameter-efficient fine-tuning, and on-policy distillation. Oumi trains on your data and automatically re-evaluates results so you can measure improvement.

04/Deploy

Ship it and keep improving

Coming soon: Deploy your custom model to production with built-in lightweight monitoring. Track performance over time, catch regressions early, and feed insights back into evaluation to start the cycle again.

Deploy: Ship it and keep improving - Coming soon: Deploy your custom model to production with built-in lightweight monitoring. Track performance over time, catch regressions early, and feed insights back into evaluation to start the cycle again.

AI that builds your AI

The AI-native Custom Model Development Platform that automates the entire model development lifecycle

10x FASTER DEVELOPMENT

Hours, not months

Running evals. Analyzing failures. Curating data. Training. Repeat 12 times daily. Automatically.

10x CHEAPER MODELS

Small models, massive savings

Custom 3-7B models beat GPT-5.4 accuracy on your tasks and cost 10x less to run.

50% MORE ACCURATE MODELS

Task-specific precision

Generic models are trained on everything, mediocre at most things. Custom is the difference between a feature you can't ship and a competitive moat.

10X FASTER

Lightning-fast responses

Agentic workflows chain multiple calls — latency compounds. Custom models deliver instant responses. Faster decisions. Better experiences.

Top-5 U.S. Bank · 100M Lines of Legacy Code

Financial Services

Legacy Code Modernization
Compliance Guardrails
KYC/AML Document Extraction
Security Signal Detection
Regulatory Monitoring
Investment Reports

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

Healthcare

Medical Record Data Extraction
Clinical NLP Distillation
Clinical Code Classification
Clinical Scribe Optimization
Medical Coding Automation
Medical Record Summarization
Agentic Healthcare Assistant

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

Manufacturing

Equipment Documentation
ASIC Design & Code Gen
Service Classification
Invoice Verification
On-Device Quality Assessment
Predictive Maintenance
Work Order Automation
Document Comparison

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

Insurance

Claims Classification
Form Validation & Completeness
Underwriting Automation
Policy Document Processing
Claims Intake Automation

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

Media & Gaming

AI-Generated Content Moderation
Game Analytics
Multilingual Conversational Agents
Text-to-Query (Neo4j/Cypher)
AI Accuracy Auditing
Post-Production Automation
Script Analysis & Summarization
Constrained Content Generation

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

Specialized Use Cases Require Specialized Intelligence

Build AI that understands your business, use cases and processes. Achieve high accuracy, low costs, and compounding IP you fully own.

Financial Services

Top-5 U.S. Bank · 100M Lines of Legacy Code

Use Cases Applied

Legacy Code ModernizationCompliance GuardrailsKYC/AML Document ExtractionSecurity Signal DetectionRegulatory MonitoringInvestment Reports

“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

Better models Lower cost

Get started today with our open source or enterprise offerings

8.9K GitHub Stars

Open Source Stack

Free Forever

Everything AI researchers need to build state-of-the-art models in a single library.

Pre-training, fine-tuning, and evaluation at any scale
Text and multimodal, open and closed models
Data synthesis and curation
Run anywhere, from your laptop to the cloud

Visit GitHub

100x faster development

Pro Platform

$25/month

with rollover to next month

Build high-performing custom models faster. No need to bring your own compute.

Free starter credits: $50 corporate, $25 personal
Automated evaluation, synthesis, and training pipelines
Deploy to the inference provider of your choice
Expert support
25 monthly credits with rollover

Get Started with Free Credits

Tailored to your needs

Enterprise

Custom Pricing

Platform access and services pricing tailored to your team's needs. Oumi's team works alongside yours to build custom models and agents for your most critical use cases.