Best AI Infrastructure Companies in Seattle, United States
The 39 best AI Infrastructure companies in Seattle, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Octo.
Our analysis of 50 AI Infrastructure companies
$46.6b in tracked funding; 98% of the stack-profiled cohort runs cloud-native; funding activity peaked in 2025.
Ranked: Best AI Infrastructure companies in Seattle
| # | Company | Disclosed funding | Last round | Stage | Founded | Founder | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Octo Open-source analytics platform for businesses | $133M | 58 mo ago | Acquired | 2014 | Luis Ceze Co-Founder & CEO | — | — | — |
| 2 | Protect AI Provider of AI-based ML security solutions | $129M | 25 mo ago | Acquired | 2022 | Badar Ahmed CTO and Founder | HubSpot CMS HubApple iCloud MailGoogle Workspace+17 | 5 patents Radon and environmental contaminant detection sensors for indoor air quality monitoring. | — |
| 3 | Defined Crowd Provider of AI training data and solutions for machine learning | $70M | 31 mo ago | Series B | 2015 | Daniela Braga Co-Founder & CEO | TurbopackEmotionNode.js+21 | — | — |
| 4 | Union.ai Developer of a platform for orchestrating, training, and serving AI 62AI top 20%Funding top 27%Talent top 28%Growth top 35% All 8 signals ▾AItop 20% Fundingtop 27% Talenttop 28% Growthtop 35% Moattop 39% Techbottom 46% Marketbottom 37% Globalbottom 29% AI: Classified as an AI company Funding: Raised $29.1M across 3 rounds · 3 rounds over 4 yrs (0.8/yr) rank vs industry peers · Fliar Intelligence Index 62/100 | $29M | 6 mo ago | Series A | 2021 | Ketan Umare Co-Founder & CEO | WebflowAmazon Web ServicesStripe+23 | — | — |
| 5 | Fixie.ai Developer of voice AI platform providing real-time speech processing capabilities | $17M | 41 mo ago | Seed | 2022 | Zach Koch Co-Founder & CEO | Framer SitesReactPriority Hints+9 | — | — |
| 6 | Envive AI Provider of AI agent technology for e-commerce sales and search | $15M | 11 mo ago | Series A | 2023 | Iz Beltagy Co-Founder | WebflowGSAPcore-js+22 | — | — |
| 7 | XNOR.AI Framework for on device deep learning capability | $15M | 99 mo ago | Acquired | 2017 | — | — | 42 patents Patents concentrated in computing, sensing & instrumentation | — |
| 8 | Why Labs Provider of an AI analysis platform for ML models | $14M | 58 mo ago | Acquired | 2019 | Alessya Visnjic Co-Founder & CEO | Node.jsAmazon Web ServicesVercel+19 | — | — |
| 9 | Raiinmaker Decentralized AI platform that enables users to contribute to the development of AI models | $13M | 29 mo ago | Seed | 2019 | J Seraphine Co-Founder & CEO | Webflow EcommerceWebflowThree.js+27 | — | — |
| 10 | WellSaid Labs Provider of AI and web-based text to speech software | $12M | 62 mo ago | Series A | 2018 | Michael Petrochuk Co-Founder | HubSpot CMS HubAmazon Web Servicescore-js+13 | 2 patents Synthetic speech generation and realistic audio waveform synthesis | — |
| 11 | Oumi Open-source AI platform for model development and deployment | $10M | 19 mo ago | Seed | 2024 | Kostas Aisopos Co-Founder | TurbopackSentryNode.js+17 | — | — |
| 12 | Certiv Provider of runtime assurance for AI agents, offering visibility and control | $4M | 5 mo ago | Seed | 2026 | Daniel Morris Co-Founder | — | — | — |
| 13 | YData AI based platform for data anonymization | $3M | 58 mo ago | Seed | 2019 | Fabiana Clemente Co-Founder & CDO | HubSpot CMS HubAmazon Web Servicescore-js+14 | 2 patents Synthetic data generation for scalable machine‑learning model training | — |
| 14 | Operiant Platform to build and run distributed systems | $2M | 95 mo ago | Series A | 2018 | Davor Bonaci Co-Founder & CEO | — | — | — |
| 15 | Talc Provider debugging and testing solutions for businesses launching AI products | $500K | — | Seed | 2023 | Matt Lee Co-Founder | ReactReact RouterAmazon Web Services+9 | — | — |
Top 12 AI Infrastructure companies in Seattle
#1
Series A · Seattle, Washington · founded 2021 · 34 employees$29.1Mraised▾
Developer of a platform for orchestrating, training, and serving AI. The platform builds high-velocity workflows with dynamic orchestration, real-time inference, and infrastructure awareness. It provides reliable and reproducible workflows with automatic failure recovery, caching, and versioning. The platform enables enterprise compliance, monitoring progress with data lineage and observability dashboards. It supports authoring in Python and enables on-the-fly branching, loops, and error-handling. The platform scales to actions and achieves task startup time, provisioning jobs dynamically. It allows building workflows locally and running them remotely and securely in the cloud.
- Feb 2026Series A$19M
- May 2023Series A$19.1M
- Apr 2022Seed$10M
#2
Seed · Seattle, Washington · founded 2026$4.2Mraised▾
Provider of runtime assurance for AI agents, offering visibility and control. It delivers a runtime assurance layer for organizations to automate work safely. The offering detects every agent, model, and tool call, sanctioned or shadow. It allows users to see reasoning chains, data accessed, tool calls, and multi-agent workflows. The solution enforces policy and protects against unauthorized access.
- Mar 2026Seed$4.2M
#3
Series A · Seattle, Washington · founded 2023$15Mraised▾
Provider of AI agent technology for e-commerce sales and search. The company offers a suite of cooperative agents designed to improve online sales conversions. These agents use reinforcement signals from user behavior to enhance performance and accuracy. The platform includes agents for sales, search, data enrichment, and SEO content generation.
- Sep 2025Series A$15M
#4
Acquired · Seattle, Washington · founded 2022 · 26 employees$129.3Mraised▾
Provider of AI-based ML security solutions. It offers enterprises to safeguard the machine learning models with a security platform. It offers turnkey AI and ML security that does not add unnecessary complexity to models and does not require access to raw data and algorithms.
- Jul 2024Series B$80.8M
- Jul 2023Series A$35M
- Dec 2022Seed$13.5M
#5
Seed · Seattle, Washington · founded 2024$10Mraised▾
Open-source AI platform for model development and deployment. It offers a complete solution, encompassing data preparation, model training, evaluation, and deployment at any scale. The platform supports various model types, including text and multimodal, and can be utilized in diverse environments, from personal laptops to cloud infrastructure. It is designed to facilitate research collaboration and provide developers with a reliable, flexible, and secure environment for building AI applications.
- Jan 2025Seed$10M
#6
Series B · Seattle, Washington · founded 2015 · 218 employees$69.9Mraised▾
Provider of AI training data and solutions for machine learning. It offers datasets for speech recognition, medical image analysis, and content moderation. The company provides services such as data annotation, machine translation, and conversational AI development. It also offers data and model evaluation, plus multilingual AI agent support.
- Jan 2024Series B$3.3M
- Jan 2024Conventional Debt—
- Jan 2022Series B$15M
- May 2020Series B$50.5M
#7
Seed · Seattle, Washington · founded 2019 · 11 employees$12.8Mraised▾
Decentralized AI platform that enables users to contribute to the development of AI models. It enables users to validate data and train AI models, earning rewards and reputation in the process. The platform offers a decentralized AI ecosystem, allowing users to contribute to AI model development and monetize their data contributions.
- Apr 2024ICO$320K
- Apr 2024Seed$7.5M
- Oct 2021Seed$5M
#8
Acquired · Seattle, Washington · founded 2014$132.8Mraised▾
Open-source analytics platform for businesses. It offers a platform for automating marketing needs by offering intelligent push notifications and personalized feeds. It collects analytics data, connects with free and paid services that lock in data, and allows enterprises to apply machine learning to power real-time insights, recommendations, and personalized feeds on the platform. It provides a pre-built dashboard, an internal SDK for analytics, and more.
- Nov 2021Series C$85M
- Mar 2021Series B$28M
- Apr 2020Series A$15.7M
- Oct 2019Seed$3.9M
#9
Seed · Seattle, Washington · founded 2022 · 9 employees$17Mraised▾
Developer of voice AI platform providing real-time speech processing capabilities. The platform offers tools for building and scaling voice AI agents. It provides developer-friendly application programming interfaces for integration. The platform includes software development kits for major web and mobile platforms. It also offers built-in tools designed to help users build and scale voice agents.
- Mar 2023Seed$17M
#10
Acquired · Seattle, Washington · founded 2019 · 29 employees$14Mraised▾
Provider of an AI analysis platform for ML models. Enables users to monitor raw structured or unstructured data, and features real-time actionable insights, data predictions, and actuals. Allows users to observe, analyze and explain model behavior through the user-friendly interface.
- Nov 2021Series A$10M
- Sep 2020Seed$4M
#11
Series A · Seattle, Washington · founded 2018 · 21 employees$12Mraised▾
Developer of a voice-generation platform designed to turn text into voice-overs. The company's platform uses artificial intelligence to produce voice-over faster with control and within the budget that includes voice narration, voice libraries, account management, audio files and text-to-speech conversion, thereby enabling customers to add natural-sounding voice-over content.
#12
Acquired · Seattle, Washington · founded 2017 · 54 employees$14.6Mraised▾
XNOR.AI develops AI enabled framework which is able to run deep learning algorithms directly on the phone, IoT device, or an embedded CPU, without relying on data centres or network connectivity. With its platform, there is no requirement to send data to servers so the data can remain on the device ensuring the highest levels of privacy and battery-efficient performance. It can also enable a smallest Raspberry PI device with deep learning capabilities. The company claims that this platform will enable developers to integrate image processing, object recognition, speech recognition, etc. features directly onto a device. The technology was developed at Allen Institute for AI.
- May 2018Series A$12M
- Feb 2017Seed$2.6M
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of AI Infrastructure coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Who's building ai accelerators IP in Seattle
- Video Tech Services5seattle
Common questions
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