Where is Oumi headquartered?

Oumi is headquartered in Seattle, Washington, United States. The company has a team of 11-50 people.

Oumi operates in the AI Developer Tools sector. Open-source AI platform enabling enterprises to build custom specialized models that outperform frontier models at a fraction of the cost and latency. Oumi automates the end-to-end custom AI model development lifecycle — from data synthesis, evaluation, fine-tuning to deployment — enabling teams to build task-specific models in hours instead of months, with full ownership of weights and data.

When was Oumi founded?

Oumi was founded in 2024. It is based in Seattle, Washington, United States.

Who is the CEO of Oumi?

Emmanouil (Manos) Koukoumidis is the CEO of Oumi. The company was founded in 2024.

Where is Oumi located?

Oumi is headquartered in Seattle, Washington, United States.

What funding stage is Oumi at?

Oumi is currently at the Seed stage.

How many employees does Oumi have?

Oumi has approximately 11-50 employees.

Oumi

Category: AI Developer Tools

Open-source AI platform enabling enterprises to build custom specialized models that outperform frontier models at a fraction of the cost and latency. Oumi was founded in 2024. The company is led by Emmanouil (Manos) Koukoumidis. Based in Seattle, Washington, United States. Team size: 11-50. Total funding raised: $10M. Latest round: Seed. Key investors include Venrock (lead), Obvious Ventures (lead), Plug & Play, Ascend, Angel investors including Ruslan Salakhutdinov (CMU professor), Ragavan Srinivasan (Meta Product VP), Vipul Ved Prakash (Together.ai CEO), Clem Delangue (Hugging Face CEO).

Founded: 2024
Headquarters: Seattle, Washington, United States
Team size: 11-50
Total funding: $10M

Value proposition

Oumi automates the end-to-end custom AI model development lifecycle — from data synthesis, evaluation, fine-tuning to deployment — enabling teams to build task-specific models in hours instead of months, with full ownership of weights and data.

Products and solutions

Oumi Platform (SaaS): automated evaluation, data synthesis, training, and deployment for custom models, Oumi Open-Source Library: unified API for pre-training, fine-tuning (SFT, LoRA, QLoRA, DPO, GRPO), inference, and evaluation across 100+ models, Oumi Enterprise: dedicated model/agent building with expert support

Unique value

"The Right Model Beats The Biggest Model" — build custom small models (e.g., 4B-8B params) that outperform frontier APIs by up to 50% in accuracy at up to 90-100x lower cost, with full data ownership and no vendor lock-in

Target customer

Enterprise AI/ML teams, research institutions, and developers who want to build custom specialized models rather than relying on general-purpose frontier APIs

Industries served

Financial Services (banking, insurance), Healthcare (clinical NLP), Media & Gaming, AI Agents/SaaS, Retail/E-commerce

Technology advantage

Automated end-to-end pipeline (evaluate → synthesize data → train → deploy) in a single platform; supports 10M to 405B parameter models across all architectures; runs on any cloud (AWS, Azure, GCP, Lambda); open-source with 9.3K GitHub stars; built by ex-Google Gemini/Apple Intelligence engineers

How they differentiate

Unlike Together AI and Fireworks AI (inference-first platforms), Oumi is an end-to-end platform that automates the full custom model lifecycle — evaluation, data synthesis, training, deployment — not just inference. Oumi is unconditionally open-source (open code, data, weights, collaboration) vs. competitors' conditional open-source. Strongest academic collaboration network (14+ universities). Structured as a Public Benefit Corporation with AI safety mission.

Main competitors

Together AI, Fireworks AI, Axolotl (open-source fine-tuning tool)

Key partnerships

Academic: Stanford, MIT, CMU, Princeton, UC Berkeley, Caltech, NYU, Oxford, Cambridge + 14 leading institutions, Cloud: AWS, Azure, GCP

Notable customers

Top-5 US Bank (legacy code modernization), National Insurer (claims classification, 100x cost reduction), Kaizen Gaming (26 markets, 20+ languages), Aurasell (AI CRM, research agent), DMG / Divisions Maintenance Group (invoice validation), Wired Informatics (clinical NLP), Original Voices (voice authenticity)

Major milestones

Jan 2025: Came out of stealth, announced $10M Seed round and first unconditionally open AI platform, Mar 2026: Launched commercial automated custom model platform (SiliconANGLE), Apr 2026: Analysis of Google AI Overviews published in The New York Times via MobileSyrup, 2025-2026: Released models including HallOumi (claim-verification), support for Llama 4, Qwen3, DeepSeek-R1, Gemma 4, GPT-OSS

Growth metrics

9.3K GitHub stars; 40+ employees; 14+ university research partners; 36+ AI research collaborators; used across Stanford, MIT, Oxford, Cambridge

Market positioning

Positioned as the "Linux of AI" — an unconditionally open platform enabling enterprises to own their AI models, competing against both closed frontier APIs (OpenAI, Anthropic, Google) and inference-first platforms (Together, Fireworks). Focus on the shift from general-purpose to specialized small language models (SLMs).

Geographic focus

United States (Seattle HQ), with global open-source community. Academic partnerships span US (Stanford, MIT, CMU, Berkeley, Princeton, Caltech, NYU), Canada (Waterloo), and UK (Oxford, Cambridge).

About Emmanouil (Manos) Koukoumidis

Ex-Google Cloud GenAI Lead (Cloud PaLM, Cloud Gemini RAI/Safety); Princeton PhD (mobile-cloud intelligent systems); MIT; ex-Meta

Latest news about Oumi

Oumi’s analysis for the NYT shows Google’s AI Overviews are 90% accurate, but with ~5 trillion queries a year that still means ~57 million wrong answers each hour (≈100 k per minute). The error rate d

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Official website: https://oumi.ai