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OpenRouter

OpenRouter.ai is a B2B developer platform offering a single unified API for routing prompts across 300+ LLMs (OpenAI, Anthropic, Google, etc.). Founded by ex-OpenSea CEO Alex Atallah, it optimizes cost, performance, and reliability for AI developers.

Overview Structured Data Issues Contributors

Is a

Company attributes

Industry

Artificial Intelligence (AI)

Application programming interface (API)

Developer Tools

Location

B2X

Number of Employees (Ranges)

11 – 50

Email Address

support@openrouter.ai

Investors

Andreessen Horowitz (a16z)

Sequoia Capital

Total Funding Amount (USD)

40,000,000

Latest Funding Round Date

June 25, 2025

Latest Funding Type

Other attributes

Latest Funding Round Amount (USD)

40,000,000

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Funding Rounds

Products

Acquisitions

SBIR/STTR Awards

Patents

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