The Right Model Beats
The Biggest Model
Stop renting generic intelligence.
Build and deploy the best specialized model for your task. Own it fully.
Used by developers at leading organizations
Your Model, Not Theirs
Your current rented model is getting more expensive, less predictable, and may not be around forever. There's a better option: a model you own, that outperforms frontier on your specific tasks and at a fraction of the cost.
Your models, your data. Run anywhere.
Your weights. Your data. No vendor lock-in, no deprecation timelines. Fully own your destiny and differentiation. Compound it while in production.
New model releases make you stronger — not obsolete
When a new open model drops, you finetune on top of it in hours — and your custom model gets better, not obsolete. You own the improvement loop.
AI that builds your AI
The AI-native Custom Model Development Platform that automates the entire model development lifecycle
Hours, not months
What used to take an ML team months — running evals, analyzing failures, curating data, training models — now takes hours. Oumi automates the entire iteration loop.
Task-specific precision
Generic models are trained on everything, so they're great at nothing in particular. A model trained on your task and your data — that's the difference between a feature you can't ship and a competitive moat.
Small models, massive savings
A small model trained on your task consistently outperforms large frontier models on that task — and costs a fraction to run. The right model doesn't need to be the biggest one.
Lightning-fast responses
Every agentic workflow chains dozens of model calls. Latency compounds. A custom model tuned to your task responds faster at every step — better decisions, better user experiences, no trade-offs.
You own it permanently
No deprecation notices. No pricing changes that break your budget. No model updates that quietly degrade your results. Once built, your model is yours — weights, data lineage, and all.
Four Steps to Production
From a plain-English description of your task to a production model that outperforms frontier models.
Most teams only discover model failures in production, after they have already affected users, compliance, or revenue.
Oumi helps you catch those issues earlier by automatically generating evaluations tailored to your use case, comparing frontier models and fine-tuned models side by side, and surfacing where each model is failing.
You get a clear failure modes: scored by category, ranked by severity, and backed by concrete examples of what is going wrong and why.
The biggest barrier to custom models isn't training — it's data. Oumi eliminates it. Describe your task, and the platform generates targeted training examples focused on your model's exact failure modes. You review and approve.
No annotation team, no weeks of labeling, no data engineering backlog.
Your competitors are paying 10× more to run generic models that aren't built for their task. In three training iterations — typically under two hours of active effort — your custom model surpasses frontier accuracy on your specific use case. That's a performance advantage and a cost advantage, compounding over time.
This is done automatically, starting from one prompt.
Every frontier model will eventually be deprecated. When that happens to your competitors, they'll scramble and pay more. You won't — because you own the weights. Deploy to your infrastructure in one click. Monitor for drift. Feed production signals back into the next training run. Your model improves while theirs gets replaced.
From proof of concept to production — in hours
Custom AI for the institutions that can't afford to get it wrong.
A top-5 U.S. bank needed to modernize 100 million lines of legacy code. Frontier models failed half the translation tests. Sending proprietary code to a cloud API wasn't an option.
Oumi built a purpose-built model that matched frontier quality with only three iterations.
Oumi built a purpose-built 4B model in ~2 hours — outperforming frontier, at 86% lower cost.
“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 · Top-5 U.S. Bank · Financial Services
Oumi is loved by
developers and researchers
Built by 20+ researchers from Google, Apple, Meta, and Microsoft — and actively used across Stanford, MIT, Oxford, Cambridge, and 10 more leading institutions.
9,200+ developers have starred, forked, and built with Oumi. The community grows every day.
From individual researchers to Fortune 500 AI teams — the people who take model quality seriously choose to own their models.
Start free. Scale when you're ready
From Open Source to Enterprise — own your models at every tier.
Self-Hosted
Open Source
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
100x Faster Development
Pro Platform
Starts free · $25/month after
with pay-as-you-go after
Build high-performing custom models faster. No need to bring your own compute.
- Free credits equal to $50 corporate, $25 personal upon signup.
- Automated evaluation, synthesis, and training pipelines.
- Deploy to the inference provider of your choice
- Expert support
The fastest way to start building. No account needed.
For Production at Scale
Enterprise
Custom Pricing
Oumi's team works alongside yours to build custom models and agents for your most critical use cases.
- Dedicated experts embedded with your team
- Models and agents tuned to your domain
- Bespoke engagements scoped to your goals