WorkOS Raises $100M Series C at $2B Valuation, Powers Enterprise Features for Leading AI Companies
Key Takeaways
- ▸WorkOS raised $100M Series C at a $2B valuation, led by Meritech and Sapphire, to build enterprise security infrastructure for the AI era
- ▸The company powers authentication and enterprise features for major AI companies including OpenAI, Anthropic, xAI, Cursor, and Perplexity
- ▸WorkOS is positioning for the agentic AI future, where autonomous software will require robust authentication, authorization, and audit capabilities
Summary
WorkOS, a developer tools company specializing in enterprise authentication and security features, has raised $100 million in Series C funding at a $2 billion valuation. The round was led by Meritech and Sapphire, with participation from Audacious, Craft, Abstract, Greenoaks, and other investors. The company has become the go-to infrastructure provider for rapidly scaling AI companies that need enterprise-grade features from day one.
The company's customer roster reads like a who's who of the AI industry, including OpenAI, Anthropic, xAI, Cursor, Perplexity, Sierra, and numerous other high-growth AI startups. These companies rely on WorkOS to provide critical enterprise requirements such as Single Sign-On (SSO), Directory Sync (SCIM), role-based access control, and audit logging—features that enterprise buyers expect immediately rather than as future roadmap items.
Founder Michael Grinich emphasized that the company is positioning itself for the coming wave of agentic AI, where autonomous software systems will need robust authentication, authorization, and auditability. WorkOS has expanded beyond its initial authentication focus to offer a comprehensive platform including granular permissions, integrations, encryption, abuse detection through its Radar product, feature flags, and support for the Model Context Protocol (MCP). The platform currently serves thousands of customers processing billions of API requests monthly with 99.999% uptime.
The new funding will accelerate WorkOS's efforts to build infrastructure for secure and reliable agentic software. As Grinich noted, the company sees a 'golden era for builders' where the marginal cost of writing code approaches zero, but trust and security become the primary constraints. WorkOS aims to make enterprise-grade security and compliance accessible to developers of all scales, from weekend projects to products serving the world's largest organizations.
- The platform processes billions of API requests monthly with 99.999% uptime and has expanded beyond authentication to include permissions, encryption, abuse detection, and MCP support
