Exa

Exa Labs Inc. operates a search API built specifically for AI agents and applications, describing its mission as working toward "perfect search" for AI systems. The company publishes a free, open-source Exa MCP Server that connects Claude, Cursor, VS Code, and other AI development tools directly to Exa's search capabilities.

Its feature set includes a general Search API for web search optimized for AI consumption, a Contents API for extracting and converting webpage content to markdown, and an Agent API purpose-built for autonomous agents. Code Search retrieves working code examples from GitHub, Stack Overflow, and official documentation, real-time results provide information beyond a language model's training cutoff, and a specialized academic search integrates with arXiv and other research databases.

Through the MCP server, AI assistants can perform real-time research, competitive analysis, code discovery, and content retrieval directly from the development environment, instead of switching between separate tools for each of these tasks.

The business model is freemium: access through an API dashboard with tiered usage levels, while the MCP server itself remains free. For higher demands, Exa also offers enterprise solutions and paid API tiers.

Exa Labs Inc. was founded in 2021 by Will Bryk and Jeffrey Wang; Bryk had previously worked as a software engineer at Cresta. In May 2026, the company raised a $250 million Series C round at a $2.2 billion valuation, led by Andreessen Horowitz.