The AI platform OpenRouter, founded by former OpenSea co-founder, has completed a $40 million Series A funding round, led by a16z and others.

PANews, June 27th news, the AI model marketplace platform OpenRouter announced the completion of a $40 million seed and Series A funding round, with a company valuation of approximately $500 million. This round of financing was led by Andreessen Horowitz and Menlo Ventures, with participation from Sequoia and several well-known industry investors. The funds will be used for product development, introducing new types of models, and expanding enterprise support. OpenRouter was founded in 2023 by Alex Atallah, co-founder and CTO of OpenSea, and Louis Vichy. It provides a unified interface to connect over 400 large language models (LLMs), helping developers and enterprises simplify multi-model integration. Since its launch, the company has attracted over 1 million developers to use its API, with annual inference spending growing from $10 million in October 2024 to over $100 million by May 2025. Its customers range from startups to multinational corporations, supporting routing for mission-critical traffic.